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ALIASES
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1994-10-12
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:
: ALIASES -- 4OS2 Sample Alias File
:
:
: The aliases in this file are designed to give you some examples of
: how 4OS2 aliases can be used and the power they have. It is not
: intended to be an exhaustive list, and many of these may not be
: appropriate for your needs. But they should give you a feel for how
: to use aliases to help get your work done.
:
: CAUTION: These aliases are EXAMPLES. We do NOT promise that they
: will work properly when run on your system. They are simply intended
: to show what's possible and give you a feel for how to write your
: own set of aliases. You may find some of them useful, but others
: may fail or have unintended effects when they are run on a system
: other than the one they were designed for.
:
: This file is designed to be loaded with an ALIAS /R command, for
: example:
:
: alias /r aliases
:
: You can also load aliases from a batch file, but ALIAS /R is much
: faster. See the manual for more details on loading aliases.
:
: We suggest you put your standard aliases are in a self-contained
: file like this one which can be invoked from 4START. That way the
: file can also be re-invoked after it is edited, to re-install the
: aliases. (For more information on loading aliases from your
: 4START or STARTUP.CMD file, see your reference manual).
:
:
:
: The next few aliases set up some directory commands that provide
: shorthand ways to view the directory in several different formats
: (see the DIR command in the manual for more details).
:
: Note that none of these aliases has any arguments specified (%1,
: %2, etc.). This means that all arguments on the actual command line
: will be appended to the alias text. For example:
:
: d2 x*
:
: is equivalent to:
:
: dir /2pv x*
:
: and:
:
: d2 x* y* z*
:
: is equivalent to:
:
: dir /2pv x* y* z*
:
d2 dir /2pv
de dir /oe
dir *dir /p
wh*ereis dir /dp
:
: The last two commands above demonstrate the use of an asterisk to
: terminate alias expansion and to shorten the name of an alias.
:
: In the first case, if the command were defined as:
:
: alias dir dir/p
:
: it would generate an alias loop error. The inclusion of the "*"
: makes 4OS2 terminate alias expansion for that command, which
: allows the redefinition of a command with specific switch settings.
: In this case "dir" is redefined as "dir/p", which will cause
: directories to be displayed with a pause at the end of each page.
:
: The "whereis" command demonstrates truncation of an alias name.
: The * is placed after the last required character in the name, so
: the "whereis" command can be entered as "wh", "whe", "wher",
: "where", "wherei", or "whereis".
:
:
: The following aliases are more shorthand: DD and DU (directory
: down and directory up) for pushd and popd, DX (shows only the
: subdirectories, L for list, etc.
:
dd pushd
du popd
dx *dir /mwad
l list
clr mode mono
:
: Aliases can also be used to modify the behavior of some internal
: commands. The two examples below show how you can force DELETE and
: MOVE to prompt before execution. If you need to use the unprompted
: command, use the leading asterisk ("*DEL").
del*ete *del /p
move *move /r
:
:
: The next aliases show how some commands can be enhanced. Instead of
: always prompting you for new values, TIME and DATE can simply report
: the current information.
:
date echo Today is %_dow %_date
time echo The time is %_time
: Here's what the next few aliases do:
:
: more: Uses 4OS2's LIST /S as a substitute for the MORE
: command. Note the use of the * to allow the command
: to be entered as MO, MOR, or MORE
:
: ff: Uses the 4OS2 FFIND command to find a file anywhere
: in the current directory or any of its subdirectories,
: for example:
:
: ff *.dat
:
: fft: Like FF, but assumes that the second and following
: arguments are text to look for within the files. For
: example, to find all .DAT files with the string "hello
: Barbara" in them you could use this command:
:
: fft *.dat hello barbara
:
: sdel: Allows you to select files for deletion from a subset
: of files as specified in the command argument. For
: example:
:
: sdel *.obj
:
: will allow you to select files to delete from a list
: of all .obj files. (See the SELECT command in the
: manual for more details).
:
: up: Moves "up" in the directory tree, i.e. to the parent
: directory.
:
: ov: Moves "over" in the directory tree, to another subdi-
: rectory which has the same parent as the current
: directory.
:
mo*re list /s
ff ffind /s
fft ffind /s /t"%2$" %1
sdel select del (%1)
up cd ..
ov cd ..\%1
:
: The next two aliases show how arguments can be passed to commands.
: In both cases the argument given when the alias is invoked is passed
: to the program at the appropriate place in its command string.
:
:
lp lpr -u %1 >lpt1
ps d:\peri\ps /t:%1 /e:4
:
: The next few aliases demonstrate several things. Some use the
: command separator character & to include multiple commands in
: the alias. ND2 uses the "&&" (AND) operator so that the second
: command is only executed if the first was succcessful. The last
: two (PC and BACK) use the alias called IN to do their job. In
: fact IN was designed for "internal" use by other aliases in this
: file, though it could be used elsewhere as well. Note that, while
: PX is set up before it is referenced in other aliases, this is not
: really necessary, because any command in one alias which refers to
: another is handled when the alias is invoked, not when it is set
: up with the alias command.
:
: Here's what each alias does:
:
: nd: Creates a new directory below the current directory,
: then changes to it.
:
: nd2: Attempts to creates the specified directory on any
: drive, then changes to it if the creation was
: successful.
:
: w: Saves the current directory, changes to the ws
: directory on drive c:, runs the ws program using
: the first argument on the command line, and
: restores the original directory when done.
:
: zap: Deletes all the .bak files in the current directory,
: then does a wide directory listing.
:
: in: "Pushes" a different directory, executes a command,
: including all of the arguments on the command line,
: and then goes back to the original directory. See
: PUSHD, POPD, and Alias Parameters in the manual for
: more details.
:
: pc: Changes to the \comm directory on drive c:, runs
: the program called pcomm, then returns to the
: drive and directory in use when the command was
: executed.
:
: back: Changes to the \backup directory on drive d:, runs
: the program called tape, then returns to the previous
: drive and directory.
:
nd md %1 & cd %1
nd2 md %1 && *cdd %1
w pushd c:\wp & ws %1 & popd
zap del *.bak & dir /w
in pushd %1 & %2$ & popd
pc in c:\comm pcomm
back in d:\backup tape
:
: The following aliases make use of the %$ argument. This argument
: means "all of the arguments on the command line". For example:
:
: zap2 *.bak *.lst *.bk!
:
: expands to:
:
: erase *.bak *.lst *.bk! & chkdsk & dir /w
:
: The last of the three aliases below uses the %@eval function to
: create a command-line calculator, by simply passing all arguments
: on the command line to the function.
:
zap2 erase %$ & chkdsk & dir /w
ed edit %$ & del *.bak
cal*c echo The answer is: %@eval[%$]
:
:
: The following aliases show the use of IFF in aliases. The first
: redefines SET so that it displays the environment variables with a
: /P if no parameters are given, or processes the SET if parameters
: are specified. The second checks whether the argument is a directory;
: if so it deletes the files in the directory and then removes the
: directory. If not, it gives an error message.
:
set iff "%1"=="" then & *set /p & else *set %$ & endiff
zap iff isdir %1 then & *del %1 & *rd %1 & else & beep & echo Not a directory! & endiff
:
: You can also assign any alias to a keystroke to save a lot of typing.
: Check your manual for the proper way to express keynames.
:
: The following examples reassign the following keys:
:
: F5: wide directory
: Ctrl-F1 clear screen
: Alt-F4: exit the session
:
@@f5 dir /w
@@Ctrl-F1 cls
@@alt-f4 exit