gno/doc/refs.aug96/man2.html
1997-10-07 01:43:55 +00:00

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<p><b>NAME</b></p>
<dir>
<li><dir>
<li>sx, sb, sz - Send Files with ZMODEM, YMODEM, or
XMODEM<p>zcommand, zcommandi - Send COmmands with
ZMODEM</p>
</li>
</dir>
</li>
</dir>
<p><b>SYNOPSIS</b></p>
<dir>
<li><dir>
<li><b>sz</b> [-+abdefkLlNnopTtuvyYZ] file ...<p><b>sb</b>
[-dfktuv] file ...</p>
<p><b>sx</b> [-ktuv] file</p>
<p><b>zcommand</b> [-otv] COMMAND</p>
<p><b>zcommandi</b> [-otv] COMMAND</p>
<p><b>sz</b> -TT</p>
</li>
</dir>
</li>
</dir>
<p><b>DESCRIPTION</b></p>
<dir>
<li><dir>
<li><b>Sz</b> (send ZMODEM) uses the ZMODEM, YMODEM
or XMODEM error correcting protocol to send one
or more files over a dial-in serial port to a
variety of programs running under PC-DOS, CP/M,
Unix, VMS, and other operating systems.<p>This is
a shareware program copyrighted by Omen
Technology INC.</p>
<p><b>Sz</b> sends one or more files with ZMODEM
protocol.</p>
<p>ZMODEM greatly simplifies file transfers
compared to XMODEM. In addition to a friendly
user interface, ZMODEM provides Personal Computer
and other users an efficient, accurate, and
robust file transfer method.</p>
<p>ZMODEM provides complete END-TO-END data
integrity between application programs. ZMODEM's
32 bit CRC catches errors that sneak into even
the most advanced networks.</p>
<p>Advanced file management features include
AutoDownload (Automatic file Download initiated
without user intervention), Display of individual
and total file lengths and transmission time
estimates, Crash Recovery, selective file
transfers, and preservation of exact file date
and length.</p>
<p>The -y option instructs the receiver to open
the file for writing unconditionally. The -a
option causes the receiver to convert Unix
newlines to PC-DOS carriage returns and
linefeeds.</p>
<p><b>Sb</b> sends one or more files with YMODEM
or ZMODEM protocol. The initial ZMODEM
initialization is not sent. When requested by the
receiver, <b>sb</b> supports YMODEM-g with
&quot;cbreak&quot; tty mode, XON/XOFF flow
control, and interrupt character set to CAN (^X).
YMODEM-g increases YMODEM throughput over error
free channels (direct connection, X.PC, etc.) by
disabling error recovery.</p>
<p>On Unix systems, additional information about
the file is transmitted. If the receiving program
uses this information, the transmitted file
length controls the exact number of bytes written
to the output dataset, and the modify time and
file mode are set accordingly.</p>
<p><b>Sx</b> sends a single file with XMODEM or
XMODEM-1k protocol (sometimes incorrectly called
&quot;ymodem&quot;). The user must supply the
file name to both sending and receiving programs.</p>
<p>If <b>sz</b> is invoked with $SHELL set and if
that variable contains the string rsh or rksh
(restricted shell), sz operates in restricted
mode. Restricted mode restricts pathnames to the
current directory and PUBDIR (usually
/usr/spool/uucppublic) and/or subdirectories
thereof.</p>
<p>The fourth form sends a single COMMAND to a
ZMODEM receiver for execution. Zcommand exits
with the COMMAND return value. If COMMAND
includes spaces or characters special to the
shell, it must be quoted.</p>
<p>The fifth form sends a single COMMAND to a
ZMODEM receiver for execution. Zcommandi exits as
soon as the receiver has correctly received the
command, before it is executed.</p>
<p>The sixth form (sz -TT) attempts to output all
256 code combinations to the terminal. If you are
having difficulty sending files, this command
lets you see which character codes are being
eaten by the operating system.</p>
<p>The meanings of the available options are:</p>
<dir>
<li><dir>
<li><dir>
<li><dir>
<li><i>+</i> Instruct the
receiver to append
transmitted data to an
existing file (ZMODEM
only).<p><i>a</i>
Instruct the ZMODEM
receiver to convert text
file format as
appropriate for the
receiving system. Valid
only for ZMODEM.</p>
<p><i>b</i> (Zmodem)
Binary override: transfer
file without any
translation.</p>
<p><i>c</i> Instruct the
receiver to change the
pathname if the
destination file exists.</p>
<p><i>d</i> Change all
instances of
&quot;.&quot; to
&quot;/&quot; in the
transmitted pathname.
Thus, C.omenB0000 (which
is unacceptable to MSDOS
or CP/M) is transmitted
as C/omenB0000. If the
resultant filename has
more than 8 characters in
the stem, a &quot;.&quot;
is inserted to allow a
total of eleven.</p>
<p><i>e</i> Escape all
control characters;
normally only XON, XOFF,
DLE, CR-@-CR, and Ctrl-X
are escaped.</p>
<p><i>f</i> Send Full
pathname. Normally
directory prefixes are
stripped from the
transmitted filename.</p>
<p><i>k</i> (X/Ymodem)
Send files using 1024
byte blocks rather than
the default 128 byte
blocks. 1024 byte packets
speed file transfers at
high bit rates. (ZMODEM
streams the data for the
best possible
throughput.)</p>
<p><i>L N</i> Use ZMODEM
sub-packets of length N.
A larger N (32 &lt;= N
&lt;= 1024) gives
slightly higher
hroughput, a smaller N
speeds error recovery.
The default is 128 below
300 baud, 256 above 300
baud, or 1024 above 2400
baud.</p>
<p><i>l N</i> Wait for
the receiver to
acknowledge correct data
every N (32 &lt;= N &lt;=
1024) characters. This
may be used to avoid
network overrun when XOFF
flow control is lacking.</p>
<p><i>n</i> (Zmodem) Send
each file if destination
file does not exist.
Overwrite destination
file if source file is
newer than the
destination file.</p>
<p><i>N</i> (Zmodem) Send
each file if destination
file does not exist.
Overwrite destination
file if source file is
newer or longer than the
destination file.</p>
<p><i>o</i> (Zmodem)
Disable automatic
selection of 32 bit CRC.</p>
<p><i>p</i> (Zmodem)
Protect existing
destination files by
skipping transfer if the
destination file exists.</p>
<p><i>r</i> (Zmodem)
Resume interrupted file
transfer. If the source
file is longer than the
destination file, the
transfer commences at the
offset in the source file
that equals the length of
the destination file.</p>
<p><i>rr </i>As above,
but compares the files
(the portion common to
sender and reciever)
before resuming the
transfer.</p>
<p><i>t</i> tim Change
timeout to tim tenths of
seconds.</p>
<p><i>u</i> Unlink the
file after successful
transmission.</p>
<p><i>w</i> N Limit the
transmit window size to N
bytes (ZMODEM).</p>
<p><i>v</i> Verbose
causes a list of file
names to be appended to
/tmp/szlog. More v's
generate more output.</p>
<p><i>y</i> Instruct a
ZMODEM receiving program
to overwrite any existing
file with the same name.</p>
<p><i>Y</i> Instruct a
ZMODEM receiving program
to overwrite any existing
file with the same name,
and to skip any source
files that do have a file
with the same pathname on
the destination system.</p>
<p><i>Z</i> Use ZMODEM
file compression to speed
file transfer.</p>
</li>
</dir>
</li>
</dir>
</li>
</dir>
</li>
</dir>
</li>
</dir>
</li>
</dir>
<p><b>DIAGNOSTICS</b></p>
<dir>
<li><dir>
<li>Exit status is as follows: 0 for successful
transfers. 1 if unrecoverable errors are
detected. 2 if syntax errors or file access
problems are detected. 3 if the program was
terminated by a caught interrupt.</li>
</dir>
</li>
</dir>
<p><b>EXAMPLE</b></p>
<dir>
<li><dir>
<li><u>ZMODEM File Transfer (GNO to remote system)</u><p><font
face="Courier New">% sz -a *.c</font></p>
<p>This single command transfers all .c files in
the current directory with conversion (-a) to end
of line conventions appropriate to the receiving
environment. With ZMODEM AutoDownload enabled,
will automatically recieve the files after
performing a security check.</p>
<p><font face="Courier New">% sz -Yan *.c *.h</font></p>
<p>Send only the .c and .h files that exist on
both systems, and are newer on the sending system
than the corresponding version on the receiving
system, converting Apple to UNIX text format.</p>
</li>
</dir>
</li>
</dir>
<p><b>SEE ALSO</b></p>
<dir>
<li><dir>
<li>rz(1).<p>Compile time options required for
various operating systems are described in the
source file.</p>
</li>
</dir>
</li>
</dir>
<p><b>FILES</b></p>
<dir>
<li><dir>
<li>32 bit CRC code courtesy Gary S. Brown.<p>sz.c,
crctab.c, rbsb.c, zm.c, zmr.c, zmodem.h Unix
source files</p>
<p>/tmp/szlog stores debugging output (sz -vv)</p>
</li>
</dir>
</li>
</dir>
<p><b>TESTING FEATURE</b></p>
<dir>
<li><dir>
<li>The command &quot;sz -T file&quot; exercises the
Attn sequence error recovery by commanding errors
with unterminated packets. The receiving program
should complain five times about binary data
packets being too long. Each time sz is
interrupted, it should send a ZDATA header
followed by another defective packet. If the
receiver does not detect five long data packets,
the Attn sequence is not interrupting the sender,
and the Myattn string in sz.c must be modified.<p>After
5 packets, sz stops the &quot;transfer&quot; and
prints the total number of characters
&quot;sent&quot; (Tcount). The difference between
Tcount and 5120 represents the number of
characters stored in various buffers when the
Attn sequence is generated.</p>
</li>
</dir>
</li>
</dir>
<p><b>NOTES</b></p>
<dir>
<li><dir>
<li>When using buffered modems at high speed,
particular attention must be paid to flow
control. The modem and Unix must agree on the
flow control method. Sz on USG (SYS III/V)
systems uses XON/XOFF flow control. If flow
control cannot be properly set up, Try a &quot;-w
2048&quot; option to enforce protocol level flow
control. Experiment with different window sizes
for best results.<p>If a program that does not
properly implement the specified file transfer
protocol causes sb to &quot;hang&quot; the port
after a failed transfer, either wait for sb to
time out or type a dozen Ctrl-X characters.</p>
<p>Many programs claiming to support YMODEM only
support XMODEM with 1k blocks, and they often
don't get that quite right. XMODEM transfers add
up to 127 garbage bytes per file. XMODEM-1k and
YMODEM-1k transfers use 128 byte blocks to avoid
extra padding.</p>
<p>YMODEM programs use the file length
transmitted at the beginning of the transfer to
prune the file to the correct length; this may
cause problems with source files that grow during
the course of the transfer. This problem does not
pertain to ZMODEM transfers, which preserve the
exact file length unconditionally.</p>
<p>Most ZMODEM options are merely passed to the
receiving program; some programs do not implement
all of these options.</p>
<p>Circular buffering and a ZMODEM sliding window
should be used when input is from pipes instead
of acknowledging frames each 1024 bytes. If no
files can be opened, sz sends a ZMODEM command to
echo a suitable complaint; perhaps it should
check for the presence of at least one accessible
file before getting hot and bothered.</p>
</li>
</dir>
</li>
</dir>
<p><b>BUGS</b></p>
<dir>
<li><dir>
<li>On at least one BSD system, sz would abnormally
end if it got within a few kilobytes of the end
of file. Using the &quot;-w 8192&quot; flag fixed
the problem. The real cause is unknown, perhaps a
bug in the kernel TTY output routines.<p>The test
mode leaves a zero length file on the receiving
system.</p>
</li>
</dir>
</li>
</dir>
<p><b>GNO/ME</b></p>
<dir>
<li><dir>
<li>The usual manner of invoking sz to send files
from a IIgs is as follows:<p>Connect to the other
computer with a term program such as TelCom GS</p>
<p>Start the X/Y/Zmodem receive on the other side</p>
<p>Get/Quit back to the GNO Shell</p>
<p>Type:</p>
<p><font face="Courier New">sz -v -v -b filename1
filename2 .. &lt;.ttya &gt;.ttyb</font></p>
<p>You may put this operation in the background
of course. Tests have shown no data loss up to
9600 baud in background operation.</p>
<p>The -b option ensures binary mode. You must
use this if you're sending a ShrinkIt archive or
other binary file. For plain text files you can
leave off the -b.</p>
</li>
</dir>
</li>
</dir>
<p><b>NAME</b></p>
<dir>
<li><dir>
<li>tar - extract and view tape archives</li>
</dir>
</li>
</dir>
<p><b>SYNOPSIS</b></p>
<dir>
<li><dir>
<li><b>tar</b> [-]{<i>x</i>|<i>t</i>}f[<i>v</i>] <i>archive</i></li>
</dir>
</li>
</dir>
<p><b>DESCRIPTION</b></p>
<dir>
<li><dir>
<li><b>tar</b> lists the contents of and extracts
files from UNIX tape archives (*.tar files).<p>Traditionally,
<b>tar</b> does not require the normal '-'
character to denote its arguments. The option
flags are as follows:</p>
<p>-<i>x</i> Extract files from the archive</p>
<p>-<i>v</i> Verbose mode (tell what tar is
doing)</p>
<p>-<i>t</i> Tell mode (list files in archive)</p>
<p>-<i>f</i> Use a file on disk instead of a tape</p>
<p>Since the standard IIGS filesystem is not as
flexible, filename-wise, as UNIX filesystems,
some pre-processing is performed on filenames
created when an archive is extracted.</p>
<p>&#149; If a tar filename contains a double-/
(possible under UNIX if an archive was created by
specifying a directory with a trailing slash),
tar converts it to a single /.</p>
<p>&#149; If a filename contains non-alpha
numeric characters, they are converted to periods
('.').</p>
<p><b>tar</b> does not maintain the file
protection bits from UNIX, nor does it maintain
the creation and modification dates.</p>
</li>
</dir>
</li>
</dir>
<p><b>BUGS</b></p>
<dir>
<li><dir>
<li>Does not create .tar archives<p>Does not work
with raw devices, only files</p>
<p>Does not allow user to specify which files to
extract from archive</p>
<p>tar should use the GS/OS JudgeName call.</p>
<p>The -x and -t options should be exclusive, but
are not.</p>
</li>
</dir>
</li>
</dir>
<p><b>NAME</b></p>
<dir>
<li>mkdir - Makes directories</li>
</dir>
<p><b>SYNOPSIS</b></p>
<dir>
<li><b>mkdir</b> <i>dirname</i> ...</li>
</dir>
<p><b>DESCRIPTION</b></p>
<dir>
<li>The <b>mkdir</b> command creates subdirectories with the <i>dirname</i>s
specified. If a file with that <i>dirname</i> exists, an
error is returned. dirname may be a full pathname, or a
partial pathname, in which case the directory is created
as a subdirectory of the current directory.<p><b>mkdir</b>
only creates the filename portion of the specified path.
If, for instance, you do </p>
<p><font face="Courier New"><b>mkdir /usr/local/bbs/foo</b></font></p>
<p>directory foo will only be created if all of <b>/usr</b>,
<b>local</b>, and <b>bbs</b> exist.</p>
</li>
</dir>
<p><b>AUTHOR</b></p>
<dir>
<li><b>mkdir</b> was written by James Brookes for GNO/ME.</li>
</dir>
<hr>
<p><b>NAME</b></p>
<dir>
<li>more - text pager</li>
</dir>
<p><b>SYNOPSIS</b></p>
<dir>
<li><b>more</b> [ <i>file</i> ...]</li>
</dir>
<p><b>DESCRIPTION</b></p>
<dir>
<li><b>more</b> allows the user to view the specified <i>file</i>(s)
screen by screen or line by line. If no <i>file</i>s are
specified, standard input is used.<p>Every time <b>more</b>
has displayed a screen of text, it displays a prompt</p>
<p><font face="Courier New">- filename (xx%) - </font></p>
<p>indicating the percentage of the file that has been
viewed and its filename. If standard input is used,</p>
<p><font face="Courier New">'&nbsp;-&nbsp;more&nbsp;-&nbsp;'</font></p>
<p>is used as the prompt instead.</p>
<p>A number of key commands are available at the prompt.</p>
<p><b>q</b> quit viewing the current file, and move to
the next file (if any)</p>
<p><b>[RETURN]</b></p>
<p>display the next line of the file</p>
<p><b>[ESC]</b> abort <b>more</b>, including any more
files that may have been specified</p>
<p><b>[SPACE]</b></p>
<p>display the next page of the file</p>
</li>
</dir>
<p><b>AUTHOR</b></p>
<dir>
<li>This version of more was written by Jawaid Bazyar and
Derek Taubert.</li>
</dir>
<hr>
<p><b>NAME</b></p>
<dir>
<li>passwd - set a user's login password</li>
</dir>
<p><b>SYNOPSIS</b></p>
<dir>
<li><b>passwd</b> [ -<b>?</b> | -<b>v</b> ] [ <i>username</i>
]</li>
</dir>
<p><b>DESCRIPTION</b></p>
<dir>
<li><b>passwd</b> changes the specified user's password. Only
root is allowed to alter passwords other than his own. If
the<i>username</i> is not given, the user's own login
name is assumed. Users other than root must then enter
the old password to verify permission to change the
password. Finally, the user must type the desired new
password twice to insure that no mistakes are made.<p>To
cancel <b>passwd</b>, type CTRL-@ when asked to enter the
new password. </p>
<p>The -<b>?</b> flag causes <b>passwd</b> to display a
brief usage message, and the -<b>v</b> flag causes <b>passwd</b>
to display version information.</p>
</li>
</dir>
<p><b>SEE ALSO</b></p>
<dir>
<li><b>login</b>(1)</li>
</dir>
<p><b>FILES</b></p>
<dir>
<li><b>/etc/passwd</b> - contains the password information</li>
</dir>
<p><b>AUTHOR</b></p>
<dir>
<li>Eric Shepherd<p>Internet uerics@mcl.mcl.ucsb</p>
<p>AOL Sheppy</p>
</li>
</dir>
<hr>
<p><b>NAME</b></p>
<dir>
<li>purge - deallocate purgeable memory handles</li>
</dir>
<p><b>SYNOPSIS</b></p>
<dir>
<li><b>purge</b> [-v]</li>
</dir>
<p><b>DESCRIPTION</b></p>
<dir>
<li>This program purges all memory blocks marked purgable.
This is very important when using the Orca compilers and
shells since certain blocks get left lying around and can
(and have!) caused compiler errors. By purging memory
before compiles a large percentage of strange compiler
errors can be eliminated. After purging, all memory
possible is then freed for usage.<p>-v gives a verbose
listing of each handle being purged and before and after
free memory statistics.</p>
<p>The problems mentioned above usually occur when a
program has over-written one of the ORCA FastFile
system's memory handles. Purging clears these handles and
forces a reload from disk.</p>
</li>
</dir>
<p><b>BUGS</b></p>
<dir>
<li>Purging memory when non-shell applications are running
could be dangerous.</li>
</dir>
<hr>
<p><b>NAME</b></p>
<dir>
<li>rx, rc, rb, rz - Receive Files and Commands with
X/Y/ZMODEM</li>
</dir>
<p><b>SYNOPSIS</b></p>
<dir>
<li><b>rz</b> -tv<p><b>rb</b> -tv</p>
<p><b>rc</b> -tv file</p>
<p><b>rx</b> -tv file</p>
<p><b>gz</b> file ... [-v]</p>
<p><b>rzCOMMAND</b></p>
</li>
</dir>
<p><b>DESCRIPTION</b></p>
<dir>
<li>This program uses error correcting protocols to receive
files over a dial-in serial port from a variety of
programs running under many operating systems. It is
invoked from a shell prompt manually, or automatically as
a result of an &quot;<b>sz</b> file ...&quot; command
given to the calling program.<p>This is a shareware
program copyrighted by Omen Technology INC.</p>
<p><b>Rz</b> (Receive ZMODEM) receives one or more files
with the ZMODEM protocol. Pathnames are supplied by the
sending program, and directories are made if necessary
(and possible). Normally, the &quot;<b>rz</b>&quot;
command is automatically issued by the calling ZMODEM
program, but defective ZMODEM implementations may require
starting <b>rz</b> manually.</p>
<p><b>Rb</b> receives file(s) with YMODEM, accepting
either standard128 byte sectors or 1024 byte sectors (sb <b>-k</b>
option). The user should determine when the 1024 byte
block length actually improves throughput.</p>
<p>If True YMODEM&trade; (Omen Technology trademark) file
information (file length, etc.) is received, the file
length controls the number of bytes written to the output
dataset, and the modify time and file mode (iff non zero)
are set accordingly.</p>
<p>If True YMODEM file information is not received,
slashes in the pathname are changed to underscore, and
any trailing period in the pathname is eliminated. This
conversion is useful for files received from CP/M and
other historical systems.</p>
<p><b>Rc</b> receives a single <u>file</u> with
XMODEM-CRC or XMODEM-1k-CRC protocol. The user should
determine when the 1024 byte block length actually
improves throughput without causing problems. The user
must supply the file name to both sending and receiving
programs. Up to 1023 garbage characters may be added to
the received file.</p>
<p><b>Rx</b> receives a single <u>file</u> with XMODEM or
XMODEM-1k protocol. The user should determine when the
1024 byte block length actually improves throughput
without causing problems. The user must supply the file
name to both sending and receiving programs. Up to 1023
garbage characters may be added to the received file.</p>
<p><b>Rz</b> may be invoked as <b>rzCOMMAND</b> (with an
optional leading - as generated by login(1)). For each
received file, <u>rz</u> will pipe the file to ``COMMAND
filename'' where filename is the name of the transmitted
file with the file contents as standard input.</p>
<p>Each file transfer is acknowledged when COMMAND exits
with 0 status. A non zero exit status terminates
transfers.</p>
<p>A typical use for this form is <u>rzmail</u> which
calls rmail(1) to post mail to the user specified by the
transmitted file name. For example, sending the file
&quot;caf&quot; from a PC-DOS system to <u>rzmail</u> on
a Unix system would result in the contents of the DOS
file &quot;caf&quot; being mailed to user
&quot;caf&quot;.</p>
<p>The meanings of the available options are:</p>
<p><b>tim</b> Change timeout to <u>tim</u> tenths of
seconds.</p>
<p><b>v </b>Verbose causes a list of file names to be
appended to /tmp/rzlog . More v's generate more detailed
debugging output.</p>
</li>
</dir>
<p><b>DIAGNOSTICS</b></p>
<dir>
<li>Exit status is as follows: 0 for successful transfers. 1
if unrecoverable errors are detected. 2 if syntax errors
or file access problems are detected. 3 if the program
was terminated by a caught interrupt.</li>
</dir>
<p><b>SEE ALSO</b></p>
<dir>
<li><b>sz</b>(1).</li>
</dir>
<p><b>NOTES</b></p>
<dir>
<li>ZMODEM's support of XOFF/XON flow control allows proper
operation in many environments that do not support XMODEM
uploads. Unfortunately, not all Unix versions support
input flow control. The TTY input buffering on some
systems may not adequately buffer long blocks or
streaming input at high speed. You should suspect this
problem when you can't send data to the Unix system at
high speeds using ZMODEM, YMODEM-1k or XMODEM-1k, but
YMODEM with 128 byte blocks works properly.<p>If a
program that does not properly implement the specified
file transfer protocol causes <b>rz</b> to
&quot;hang&quot; the port after a failed transfer, either
wait for <b>rz</b> to time out or keyboard a dozen Ctrl-X
characters.</p>
<p>Many programs claiming to support YMODEM only support
XMODEM with 1k blocks, and they often don't get that
quite right.</p>
</li>
</dir>
<p><b>BUGS</b></p>
<dir>
<li>This version of <b>rz</b> does not support some ZMODEM
features.<p>The ASCII option's CR/LF to NL translation
merely deletes CR's.</p>
</li>
</dir>
<p><b>ZMODEM CAPABILITIES</b></p>
<dir>
<li><b>Rz</b> supports ZMODEM command execution (zcommand),
incoming ZMODEM binary (-b), ASCII (-a), newer(-n),
newer+longer(-N), protect (-p), Crash Recovery(-r),
clobber (-y), match+clobber (-Y), compression(-Z), and
append (-+) requests. Other options sent by the sender
are ignored. The default is protect (-p) and binary (-b).</li>
</dir>
<p><b>FILES</b></p>
<dir>
<li>/tmp/rzlog stores debugging output generated with -vv
option</li>
</dir>
<hr>
<p><b>NAME</b></p>
<dir>
<li>script - make typescript of a terminal session</li>
</dir>
<p><b>SYNOPSIS</b></p>
<dir>
<li><b>script</b> [ -<b>a</b> ] [ <i>filename</i> ]</li>
</dir>
<p><b>DESCRIPTION</b></p>
<dir>
<li><b>script</b> makes a typescript of everything printed on
your terminal. The typescript is written to <i>filename</i>
, or appended to <i>filename</i> if the -<b>a</b> option
is given. It can be sent to the line printer later with <b>lpr</b>(1).
If no file name is given, the typescript is saved in the
file typescript .<p>The script ends when the forked shell
exits.</p>
</li>
</dir>
<p><b>OPTIONS</b></p>
<dir>
<li>-<b>a</b> Append the script to the specified file instead
of writing over it.</li>
</dir>
<p><b>SEE ALSO</b></p>
<dir>
<li><b>lpr</b> (1), <b>pty</b> (4)</li>
</dir>
<p><b>BUGS</b></p>
<dir>
<li>script places <i>everything</i> in the log file. This is
not what the naive user expects.</li>
</dir>
<hr>
<p><b>NAME</b></p>
<dir>
<li>sleep - suspend execution for an interval</li>
</dir>
<p><b>SYNOPSIS</b></p>
<dir>
<li><b>sleep</b> <i>time</i></li>
</dir>
<p><b>DESCRIPTION</b></p>
<dir>
<li><b>Sleep</b> suspends execution for <i>time</i> seconds.
It is used to execute a command after a certain amount of
time as in a script:<p>sleep 105</p>
<p>command</p>
</li>
</dir>
<p><b>SEE ALSO</b></p>
<dir>
<li><b>alarm</b>(3C), <b>sleep</b>(3)</li>
</dir>
<p><b>BUGS</b></p>
<dir>
<li><i>Time</i> must be less than 2,147,483,647 seconds.</li>
</dir>
<hr>
<p><b>NAME</b></p>
<dir>
<li>split - split a file into pieces</li>
</dir>
<p><b>SYNOPSIS</b></p>
<dir>
<li><b>split</b> [ - <i>number</i> ] [ <i>infile</i> [ <i>outfile</i>
] ]</li>
</dir>
<p><b>DESCRIPTION</b></p>
<dir>
<li><b>split</b> reads <i>infile</i> and writes it in <i>number</i>
-line pieces (default 1000) onto a set of output files
(as many files as necessary). The name of the first
output file is <i>outfile</i> with <b>aa</b> appended,
the second file is <b>outfile</b>ab , and so on
lexicographically.<p>If no <i>outfile</i> is given, <b>x</b>
is used as default (output files will be called <b>xaa</b>
, <b>xab</b> , etc.).</p>
<p>If no <i>infile</i> is given, or if `<b>-</b>' is
given in its stead, then the standard input file is used.</p>
</li>
</dir>
<p><b>OPTIONS</b></p>
<dir>
<li>- number Number of lines in each piece.</li>
</dir>
<hr>
<p><b>NAME</b></p>
<dir>
<li>stty - set and view terminal options and parameters</li>
</dir>
<p><b>SYNOPSIS</b></p>
<dir>
<li><b>stty</b> [ <i>option</i> ... ] [ <i>charoption c</i><b>
</b>... ]</li>
</dir>
<p><b>DESCRIPTION</b></p>
<dir>
<li>If no options are specified, <b>stty</b> prints out all
the current terminal option settings. <i>options</i>
represent boolean flags in the terminal parameters, and
are as follows:<p><b>raw</b> turns on RAW mode (no
character or line processing)</p>
<p><b>-raw</b> turns off RAW mode</p>
<p><b>ehco</b> if in CBREAK or COOKED mode, echoes input
characters</p>
<p><b>-echo</b> echo mode off</p>
<p><b>cbreak </b>turns on CBREAK mode (single character
processing)</p>
<p><b>-cbreak </b>turns off CBREAK mode (line-at-a-time
processing)</p>
<p><i>Charoptions</i> represent variables in the terminal
interface, and are as follows:</p>
<p><b>intr c</b> sets the interrupt character (normally
^C)</p>
<p><b>start c</b> sets the start character (normally ^Q)</p>
<p><b>stop c</b> sets the stop character (normally ^S)</p>
<p><b>eof c</b> sets the eof character (normally ^D)</p>
<p><b>susp c</b> sets the suspend character (normally ^Z)</p>
<p><b>c</b> may be defined either as an octal number such
as 003, or in control character format (^C).</p>
</li>
</dir>
<p><b>SEE ALSO</b></p>
<dir>
<li><b>tty</b>(4)</li>
</dir>
<hr>
<p><font size="3"><b>NAME</b></font></p>
<dir>
<li><font face="Times">sum - print checksum and block count
of a file</font></li>
</dir>
<p><font size="3"><b>SYNOPSIS</b></font></p>
<dir>
<li><font face="Times"><b>sum</b> [ <i>file</i> ]</font></li>
</dir>
<p><font size="3"><b>DESCRIPTION</b></font></p>
<dir>
<li><font face="Times"><b>Sum</b> calculates and prints a
16-bit checksum for the named file, and also prints the
number of blocks in the file. Stdin is used if no file
names are given. <b>Sum</b> is typically used to look for
corrupted files, or to validate a file communicated over
some transmission line.</font></li>
</dir>
<p><font size="3"><b>DIAGNOSTICS</b></font></p>
<dir>
<li><font face="Times">``Read error'' is indistinguishable
from end of file on most devices; check the block count.</font></li>
</dir>
<p><font size="3"><b>SEE ALSO</b></font></p>
<dir>
<li><font face="Times"><b>wc</b>(1).</font></li>
</dir>
<p><font size="3"><b>NOTE</b></font></p>
<dir>
<li><font face="Times"><b>Sum</b> is pretty slow on large
files when running on the GS. If anyone has a faster
algorithm for computing the 16-bit checksum, I'd really
appreciate seeing it. </font></li>
</dir>
<p><font size="3"><b>AUTHOR</b></font></p>
<dir>
<li><font face="Times">Marek Pawlowski -
marekp@pnet91.cts.com</font></li>
</dir>
<hr>
<p><b>NAME</b></p>
<dir>
<li>sx, sb, sz - Send Files with ZMODEM, YMODEM, or XMODEM<p>zcommand,
zcommandi - Send COmmands with ZMODEM</p>
</li>
</dir>
<p><b>SYNOPSIS</b></p>
<dir>
<li><b>sz</b> [-+abdefkLlNnopTtuvyYZ] file ...<p><b>sb</b>
[-dfktuv] file ...</p>
<p><b>sx</b> [-ktuv] file</p>
<p><b>zcommand</b> [-otv] COMMAND</p>
<p><b>zcommandi</b> [-otv] COMMAND</p>
<p><b>sz</b> -TT</p>
</li>
</dir>
<p><b>DESCRIPTION</b></p>
<dir>
<li><b>Sz</b> (send ZMODEM) uses the ZMODEM, YMODEM or XMODEM
error correcting protocol to send one or more files over
a dial-in serial port to a variety of programs running
under PC-DOS, CP/M, Unix, VMS, and other operating
systems.<p>This is a shareware program copyrighted by
Omen Technology INC.</p>
<p><b>Sz</b> sends one or more files with ZMODEM
protocol.</p>
<p>ZMODEM greatly simplifies file transfers compared to
XMODEM. In addition to a friendly user interface, ZMODEM
provides Personal Computer and other users an efficient,
accurate, and robust file transfer method.</p>
<p>ZMODEM provides complete END-TO-END data integrity
between application programs. ZMODEM's 32 bit CRC catches
errors that sneak into even the most advanced networks.</p>
<p>Advanced file management features include AutoDownload
(Automatic file Download initiated without user
intervention), Display of individual and total file
lengths and transmission time estimates, Crash Recovery,
selective file transfers, and preservation of exact file
date and length.</p>
<p>The -y option instructs the receiver to open the file
for writing unconditionally. The -a option causes the
receiver to convert Unix newlines to PC-DOS carriage
returns and linefeeds.</p>
<p><b>Sb</b> sends one or more files with YMODEM or
ZMODEM protocol. The initial ZMODEM initialization is not
sent. When requested by the receiver, <b>sb</b> supports
YMODEM-g with &quot;cbreak&quot; tty mode, XON/XOFF flow
control, and interrupt character set to CAN (^X).
YMODEM-g increases YMODEM throughput over error free
channels (direct connection, X.PC, etc.) by disabling
error recovery.</p>
<p>On Unix systems, additional information about the file
is transmitted. If the receiving program uses this
information, the transmitted file length controls the
exact number of bytes written to the output dataset, and
the modify time and file mode are set accordingly.</p>
<p><b>Sx</b> sends a single file with XMODEM or XMODEM-1k
protocol (sometimes incorrectly called
&quot;ymodem&quot;). The user must supply the file name
to both sending and receiving programs.</p>
<p>If <b>sz</b> is invoked with $SHELL set and if that
variable contains the string rsh or rksh (restricted
shell), sz operates in restricted mode. Restricted mode
restricts pathnames to the current directory and PUBDIR
(usually /usr/spool/uucppublic) and/or subdirectories
thereof.</p>
<p>The fourth form sends a single COMMAND to a ZMODEM
receiver for execution. Zcommand exits with the COMMAND
return value. If COMMAND includes spaces or characters
special to the shell, it must be quoted.</p>
<p>The fifth form sends a single COMMAND to a ZMODEM
receiver for execution. Zcommandi exits as soon as the
receiver has correctly received the command, before it is
executed.</p>
<p>The sixth form (sz -TT) attempts to output all 256
code combinations to the terminal. If you are having
difficulty sending files, this command lets you see which
character codes are being eaten by the operating system.</p>
<p>The meanings of the available options are:</p>
<p><i>+</i> Instruct the receiver to append transmitted
data to an existing file (ZMODEM only).</p>
<p><i>a</i> Instruct the ZMODEM receiver to convert text
file format as appropriate for the receiving system.
Valid only for ZMODEM.</p>
<p><i>b</i> (Zmodem) Binary override: transfer file
without any translation.</p>
<p><i>c</i> Instruct the receiver to change the pathname
if the destination file exists.</p>
<p><i>d</i> Change all instances of &quot;.&quot; to
&quot;/&quot; in the transmitted pathname. Thus,
C.omenB0000 (which is unacceptable to MSDOS or CP/M) is
transmitted as C/omenB0000. If the resultant filename has
more than 8 characters in the stem, a &quot;.&quot; is
inserted to allow a total of eleven.</p>
<p><i>e</i> Escape all control characters; normally only
XON, XOFF, DLE, CR-@-CR, and Ctrl-X are escaped.</p>
<p><i>f</i> Send Full pathname. Normally directory
prefixes are stripped from the transmitted filename.</p>
<p><i>k</i> (X/Ymodem) Send files using 1024 byte blocks
rather than the default 128 byte blocks. 1024 byte
packets speed file transfers at high bit rates. (ZMODEM
streams the data for the best possible throughput.)</p>
<p><i>L N</i> Use ZMODEM sub-packets of length N. A
larger N (32 &lt;= N &lt;= 1024) gives slightly higher
hroughput, a smaller N speeds error recovery. The default
is 128 below 300 baud, 256 above 300 baud, or 1024 above
2400 baud.</p>
<p><i>l N</i> Wait for the receiver to acknowledge
correct data every N (32 &lt;= N &lt;= 1024) characters.
This may be used to avoid network overrun when XOFF flow
control is lacking.</p>
<p><i>n</i> (Zmodem) Send each file if destination file
does not exist. Overwrite destination file if source file
is newer than the destination file.</p>
<p><i>N</i> (Zmodem) Send each file if destination file
does not exist. Overwrite destination file if source file
is newer or longer than the destination file.</p>
<p><i>o</i> (Zmodem) Disable automatic selection of 32
bit CRC.</p>
<p><i>p</i> (Zmodem) Protect existing destination files
by skipping transfer if the destination file exists.</p>
<p><i>r</i> (Zmodem) Resume interrupted file transfer. If
the source file is longer than the destination file, the
transfer commences at the offset in the source file that
equals the length of the destination file.</p>
<p><i>rr </i>As above, but compares the files (the
portion common to sender and reciever) before resuming
the transfer.</p>
<p><i>t</i> tim Change timeout to tim tenths of seconds.</p>
<p><i>u</i> Unlink the file after successful
transmission.</p>
<p><i>w</i> N Limit the transmit window size to N bytes
(ZMODEM).</p>
<p><i>v</i> Verbose causes a list of file names to be
appended to /tmp/szlog. More v's generate more output.</p>
<p><i>y</i> Instruct a ZMODEM receiving program to
overwrite any existing file with the same name.</p>
<p><i>Y</i> Instruct a ZMODEM receiving program to
overwrite any existing file with the same name, and to
skip any source files that do have a file with the same
pathname on the destination system.</p>
<p><i>Z</i> Use ZMODEM file compression to speed file
transfer.</p>
</li>
</dir>
<p><b>DIAGNOSTICS</b></p>
<dir>
<li>Exit status is as follows: 0 for successful transfers. 1
if unrecoverable errors are detected. 2 if syntax errors
or file access problems are detected. 3 if the program
was terminated by a caught interrupt.</li>
</dir>
<p><b>EXAMPLE</b></p>
<dir>
<li><u>ZMODEM File Transfer (GNO to remote system)</u><p><font
face="Courier New">% sz -a *.c</font></p>
<p>This single command transfers all .c files in the
current directory with conversion (-a) to end of line
conventions appropriate to the receiving environment.
With ZMODEM AutoDownload enabled, will automatically
recieve the files after performing a security check.</p>
<p><font face="Courier New">% sz -Yan *.c *.h</font></p>
<p>Send only the .c and .h files that exist on both
systems, and are newer on the sending system than the
corresponding version on the receiving system, converting
Apple to UNIX text format.</p>
</li>
</dir>
<p><b>SEE ALSO</b></p>
<dir>
<li>rz(1).<p>Compile time options required for various
operating systems are described in the source file.</p>
</li>
</dir>
<p><b>FILES</b></p>
<dir>
<li>32 bit CRC code courtesy Gary S. Brown.<p>sz.c, crctab.c,
rbsb.c, zm.c, zmr.c, zmodem.h Unix source files</p>
<p>/tmp/szlog stores debugging output (sz -vv)</p>
</li>
</dir>
<p><b>TESTING FEATURE</b></p>
<dir>
<li>The command &quot;sz -T file&quot; exercises the Attn
sequence error recovery by commanding errors with
unterminated packets. The receiving program should
complain five times about binary data packets being too
long. Each time sz is interrupted, it should send a ZDATA
header followed by another defective packet. If the
receiver does not detect five long data packets, the Attn
sequence is not interrupting the sender, and the Myattn
string in sz.c must be modified.<p>After 5 packets, sz
stops the &quot;transfer&quot; and prints the total
number of characters &quot;sent&quot; (Tcount). The
difference between Tcount and 5120 represents the number
of characters stored in various buffers when the Attn
sequence is generated.</p>
</li>
</dir>
<p><b>NOTES</b></p>
<dir>
<li>When using buffered modems at high speed, particular
attention must be paid to flow control. The modem and
Unix must agree on the flow control method. Sz on USG
(SYS III/V) systems uses XON/XOFF flow control. If flow
control cannot be properly set up, Try a &quot;-w
2048&quot; option to enforce protocol level flow control.
Experiment with different window sizes for best results.<p>If
a program that does not properly implement the specified
file transfer protocol causes sb to &quot;hang&quot; the
port after a failed transfer, either wait for sb to time
out or type a dozen Ctrl-X characters.</p>
<p>Many programs claiming to support YMODEM only support
XMODEM with 1k blocks, and they often don't get that
quite right. XMODEM transfers add up to 127 garbage bytes
per file. XMODEM-1k and YMODEM-1k transfers use 128 byte
blocks to avoid extra padding.</p>
<p>YMODEM programs use the file length transmitted at the
beginning of the transfer to prune the file to the
correct length; this may cause problems with source files
that grow during the course of the transfer. This problem
does not pertain to ZMODEM transfers, which preserve the
exact file length unconditionally.</p>
<p>Most ZMODEM options are merely passed to the receiving
program; some programs do not implement all of these
options.</p>
<p>Circular buffering and a ZMODEM sliding window should
be used when input is from pipes instead of acknowledging
frames each 1024 bytes. If no files can be opened, sz
sends a ZMODEM command to echo a suitable complaint;
perhaps it should check for the presence of at least one
accessible file before getting hot and bothered.</p>
</li>
</dir>
<p><b>BUGS</b></p>
<dir>
<li>On at least one BSD system, sz would abnormally end if it
got within a few kilobytes of the end of file. Using the
&quot;-w 8192&quot; flag fixed the problem. The real
cause is unknown, perhaps a bug in the kernel TTY output
routines.<p>The test mode leaves a zero length file on
the receiving system.</p>
</li>
</dir>
<p><b>GNO/ME</b></p>
<dir>
<li>The usual manner of invoking sz to send files from a IIgs
is as follows:<p>Connect to the other computer with a
term program such as TelCom GS</p>
<p>Start the X/Y/Zmodem receive on the other side</p>
<p>Get/Quit back to the GNO Shell</p>
<p>Type:</p>
<p><font face="Courier New">sz -v -v -b filename1
filename2 .. &lt;.ttya &gt;.ttyb</font></p>
<p>You may put this operation in the background of
course. Tests have shown no data loss up to 9600 baud in
background operation.</p>
<p>The -b option ensures binary mode. You must use this
if you're sending a ShrinkIt archive or other binary
file. For plain text files you can leave off the -b.</p>
</li>
</dir>
<hr>
<p><b>NAME</b></p>
<dir>
<li>tar - extract and view tape archives</li>
</dir>
<p><b>SYNOPSIS</b></p>
<dir>
<li><b>tar</b> [-]{<i>x</i>|<i>t</i>}f[<i>v</i>] <i>archive</i></li>
</dir>
<p><b>DESCRIPTION</b></p>
<dir>
<li><b>tar</b> lists the contents of and extracts files from
UNIX tape archives (*.tar files).<p>Traditionally, <b>tar</b>
does not require the normal '-' character to denote its
arguments. The option flags are as follows:</p>
<p>-<i>x</i> Extract files from the archive</p>
<p>-<i>v</i> Verbose mode (tell what tar is doing)</p>
<p>-<i>t</i> Tell mode (list files in archive)</p>
<p>-<i>f</i> Use a file on disk instead of a tape</p>
<p>Since the standard IIGS filesystem is not as flexible,
filename-wise, as UNIX filesystems, some pre-processing
is performed on filenames created when an archive is
extracted.</p>
<p>&#149; If a tar filename contains a double-/ (possible
under UNIX if an archive was created by specifying a
directory with a trailing slash), tar converts it to a
single /.</p>
<p>&#149; If a filename contains non-alpha numeric
characters, they are converted to periods ('.').</p>
<p><b>tar</b> does not maintain the file protection bits
from UNIX, nor does it maintain the creation and
modification dates.</p>
</li>
</dir>
<p><b>BUGS</b></p>
<dir>
<li>Does not create .tar archives<p>Does not work with raw
devices, only files</p>
<p>Does not allow user to specify which files to extract
from archive</p>
<p>tar should use the GS/OS JudgeName call.</p>
<p>The -x and -t options should be exclusive, but are
not.</p>
</li>
</dir>
</body>
</html>