63 lines
2.9 KiB
Plaintext
63 lines
2.9 KiB
Plaintext
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sysalias -- create an alias for a SYS or S16 file (EXTERNAL) [v1.3]
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syntax: sysalias <existing_program> <alias_to_create> [-p prefix]
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[-s startpath]
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ex: sysalias /disk/davex/davex.system /disk/dvx.system
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sysalias davex.dir/davex /disk/start.system
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sysalias /disk/awks/aplworks.system %aw
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sysalias /work/applewr/awd.system %awr -p /work/applewr
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sysalias /disk1/basic.system basic -s /disk1/tons.o.fun
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sysalias /awgs.program/appleworks.gs awgs -s /ss/my.budget
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Creates a one-block program file (name = alias_to_create) which
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runs a given SYS or S16 file (name = existing_program). Wildcards are
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allowed. This allows program files to appear to be in more than one
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place at a time without taking up much extra disk space. (S16 files
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are useful only on the Apple IIgs.)
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In most cases, you will want to specify a complete pathname for
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<existing_program>. If you specify a partial pathname, the
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one-block SYS or S16 file created may or may not be able to find the
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program it's looking for, depending on the prefix at run time.
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If you use -p, the file created will set the prefix as specified before
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running its program file.
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When you sysalias a SYS file that has a startup buffer, the alias will
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have one, too; the alias passes the startup information along to the
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original program.
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The -s option can be used with SYS files to put a default "startup
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pathname" in the alias's startup buffer. This name will be passed on
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to the application being aliased. The fifth example above creates a
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file called "basic" which is an alias for "/disk1/basic.system".
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If you type "basic" without a parameter, Davex will run BASIC.SYSTEM,
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and BASIC.SYSTEM will run "/disk2/tons.o.fun", because this was
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specified with the -s option.
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This alias can still accept a startup path. If you type
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"basic /disk3/more.fun" BASIC.SYSTEM will run the program you
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specified instead.
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Note: It is advisable to use COMPLETE pathnames as startup
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parameters to BASIC.SYSTEM. Here's why: BASIC.SYSTEM handles
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the Prefix as you would expect ONLY if it refers to a subdirectory.
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If the Prefix is set to a disk's top-level directory, BASIC.SYSTEM
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will behave as if you are Prefixed TO THE DISK BASIC.SYSTEM IS
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RUNNING FROM. This can be confusing. (Alternatively, you could
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use a partial pathname AND use the -p option to set a particular
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subdirectory prefix.)
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When you sysalias a S16 application, the -s option tells the alias
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to put the specified string in a "files to open" message in the Apple
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IIgs Message Center, the same way the Finder does.
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In the last example above, the S16 file AWGS is created. When you type
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AWGS on the Davex command line, Davex launches the file
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/awgs.program/appleworks.gs AND creates a "files" message containing
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the path /ss/my.budget. Then AppleWorks GS automatically opens the
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file /ss/my.budget, just like you clicked on that file's icon in the
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Finder.
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