mirror of https://github.com/GnoConsortium/gno.git
146 lines
5.9 KiB
Plaintext
146 lines
5.9 KiB
Plaintext
GNO Manual Addendum
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-------------------
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This file contains information on parts of GNO that changed after
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the documentation was printed.
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Known Bugs
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----------
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The default gshrc file created by the installer generates a $HOME
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directory that uses colon delimiters (e.g., :hd1:gno:user:root). A bug
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in handling the ~ character causes attempts to, for example, "ls ~/foo"
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to fail, because that gets interpreted as "ls :hd1:gno:user:root/foo",
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where the system interprets "root/foo" as a single filename. You should
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either change the gshrc file to use '/' delimiters, or use the ':'
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delimiter when also using ~ (i.e., "ls ~:foo")
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Getty (2.0.3)
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-------------
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The 'getty' program provided with GNO 2.0.3 and later has a new feature and
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a fixed bug.
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o Getty used to overrun its stack space in ways that were hard to
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detect; this has been fixed
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o There is a new type of entry in the gettytab file:
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P|8bit.9600|9600-baud-8bit|8bit:\
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:sp#9600:p8:tt=vt100:hu#8:
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The 'hu#' entry represents the RS232 signal line that is to be
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used as carrier detect, and thus will cause a SIGHUP signal to
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be sent to the processes running on that port. In this example,
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'8' indicates a '1' in bit 3 of the following byte:
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[7] break/abort
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[6] tx underrun
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* [5] DSR (input handshake line)
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[4] reserved
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* [3] DCD (general purpose input line)
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[2] tx buff empty
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[1] reserved
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[0] rx char available
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The only lines that have any meaning are marked with '*'s. The
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default line is #5 (value 32) due to the strange wiring of some
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modem cables. Setting this value to zero (0) turns off hangup
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checking completely.
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How to Control Serial Ports with stty
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-------------------------------------
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'stty' is short for 'set tty parameters', and can be used to control
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various aspects of the serial ports and other terminal devices.
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stty modifies the parameters of the terminal that stty's standard input
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references; e.g., to modify .ttya parameters, do something like this:
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stty ... < .ttya
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To set the baud rate, simply enter the baud rate you want on the command line.
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e.g., to set the printer port's baud rate to 19200 baud, do
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stty 19200 <.ttyb
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The various other parameters that stty supports are described in the tty(4)
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manual page.
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How to use the Multi-User package
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---------------------------------
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If you choose to install the multi-user package, the nature of the GNO
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system changes quite a bit. First off, instead of GNO simply being a shell
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on your IIGS's screen, the console becomes a terminal through which you
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can log into the system.
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When you start GNO after installing the MU package, you'll see some intro
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text (terminal name, and name of the computer), and then a 'login' prompt.
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At this prompt, users type in their unique user names (and normally a
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password) to gain entry to your computer. GNO comes with one user already
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configured : 'root'. To get into GNO the first time, type 'root' at the
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login prompt. No password is set by default, so you won't be asked for one.
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If you want to protect entry to your computer with a password, use the 'passwd'
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command to change your password.
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% passwd
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You'll be prompted for your old password, which is nothing - so hit return.
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Then you type in the new password - twice, to make sure you entered it
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correctly. This is done because, sensibly, when entering a password the
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keys you type are not echoed on the screen.
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Don't forget your password! If you do, you'll have to manually edit the
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/etc/passwd file, and delete the second field; the one right after the username
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and a colon (:), and that looks like gibberish because it's encrypted. Delete
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everything between the two colons to remove the password.
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There are two ways to exit GNO with the MU package installed; simply typing
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'exit' at the shell will only return to the login prompt.
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'init 5' at the shell will cause GNO to shut down and return to the program
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launcher you used to run GNO (usually the Finder).
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'init 0' will shut down GNO and will reboot your computer.
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There is a file that contains a log of activity on the system, including
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bad attempts to log in. This file is /var/adm/syslog. Typing
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'more /var/adm/syslog' from the shell will display the contents of this file.
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Other applications may also use the syslog file to record notable events.
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How to use the line printer daemon
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(or, lpr is your friend)
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----------------------------------
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The print spooling system included with GNO is very versatile because it
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takes advantage of GNO's multitasking capabilities. Anyone can write a program
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that communicates with lpd (line printer daemon) to spool a print job. At
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this time the communication specification is not yet available; contact Procyon
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for more information.
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You must start lpd differently depending on whether you're using the MU package
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or using GNO in single-user mode. For single-user, simply type
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/usr/sbin/lpd &
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To start the spooler process.
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With MU, simply uncomment (remove the '#') the line in the /etc/inittab file
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corresponding to lpd. Then, lpd will be started automatically whenever you
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run GNO. Note that either way you start lpd, it is currently limited to
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using the printer baud rate specified in the IIGS control panel, and to
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using serial printers. lpd does not work with laser printers hooked up via
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an AppleTalk network. It also requires you to use the printer port.
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There are currently two programs that use lpd; lpr, and FilePort. lpr is
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the standard UNIX 'print a text file' program. Typing
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lpr file1 file2 ...
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will print the text files you list, adding headers and page numbers.
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FilePort is a GS/OS printer driver that works with desktop applications.
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To turn it on, use the Control Panel NDA, select 'DC Printer', and choose
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your printer type and 'FilePort' (for 'Port').
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From then on, whenever you print from a desktop program in GNO, the output
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will be spooled. If you wish to print from outside GNO, you will have to
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choose the regular port driver again in the Control Panel NDA (usually
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'Printer').
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