Zoidberg::Fish::CommanUser)Contributed Perl DocumenZoidberg::Fish::Commands(3)



NAME
       Zoidberg::Fish::Commands - Zoidberg plugin with builtin commands

SYNOPSIS
       This module is a Zoidberg plugin, see Zoidberg::Fish for details.

DESCRIPTION
       This object contains internal/built-in commands for the Zoidberg shell.

   EXPORT
       None by default.

COMMANDS
       cd [-v|--verbose] [dir|-|(+|-)hist_number]
       cd (-l|--list)
           Changes the current working directory to dir.  When used with a
           single dash changes to OLDPWD.

           This command uses the environment variable 'CDPATH'. It serves as a
           search path when the directory you want to change to isn't found in
           the current directory.

           This command also uses a directory history.  The '-number' and
           '+number' switches are used to change directory to an positive or
           negative offset in this history.

       exec cmd
           Execute cmd. This effectively ends the shell session, process flow
           will NOT return to the prompt.

       eval cmd
           Eval cmd like a shell command. Main use of this is to run code
           stored in variables.

       export var=value
           Set the environment variable var to value.

           TODO explain how export moved varraibles between the perl namespace
           and the environment

       setenv var value
           Like export, but with a slightly different syntax.

       unsetenv var
           Set var to undefined.

       set [+-][abCefnmnuvx]
       set [+o|-o] option
           Set or unset a shell option. Although sometimes confusing a '+'
           switch unsets the option, while the '-' switch sets it.

           Short options correspond to the following names:

                   a  =>  allexport  *
                   b  =>  notify
                   C  =>  noclobber
                   e  =>  errexit    *
                   f  =>  noglob
                   m  =>  monitor    *
                   n  =>  noexec     *
                   u  =>  nounset    *
                   v  =>  verbose
                   x  =>  xtrace     *
                   *) Not yet supported by the rest of the shell

           See zoiduser for a description what these and other options do.

           FIXME takes also hash arguments

       source file
           Run the perl script file. This script is NOT the same as the
           commandline syntax. Try using Zoidberg::Shell in these scripts.

       alias
       alias name
       alias name=command
       alias name command
           Make name an alias to command. Aliases work like macros in the
           shell, this means they are substituted before the commnd code is
           interpreted and can contain complex statements.

           Without command shows the alias defined for name if any; without
           arguments lists all aliases that are currently defined.

           Aliases are simple substitutions at the start of a command string.
           If you want something more intelligent like interpolating arguments
           into a string define a builtin command; see hash.

       unalias name
           Remove an alias definition.

       hash location
       hash -r
           TODO

           Command to manipulate the commands hash and command lookup logic.

       read [-r] var1 var2 ..
           Read a line from STDIN, split the line in words and assign the
           words to the named enironment variables.  Remaining words are
           stored in the last variable.

           Unless '-r' is specified the backslash is treated as an escape char
           and is it possible to escape the newline char.

       newgrp
           TODO

       umask
           TODO

       false
           A command that always returns an error without doing anything.

       true
           A command that never fails and does absolutely nothing.

       dirs
           Output the current dir stack.

           TODO some options

           Note that the dir stack is ont related to the dir history.  It was
           only implemented because historic implementations have it.

       popd dir
           Pops a directory from the dir stack and cds to that directory.

           TODO some options

       pushd dir
           Push dir on the dir stack.

           TODO some options

       pwd Prints the current PWD.

       symbols [-a|--all] [class]
           Output a listing of symbols in the specified class.  Class defaults
           to the current perl namespace, by default "Zoidberg::Eval".

           All symbols are prefixed by their sigil ('$', '@', '%', '&' or '*')
           where '*' is used for filehandles.

           By default sub classes (hashes containing '::') and special symbols
           (symbols without letters in their name) are hidden. Use the --all
           switch to see these.

       reload module [module, ..]
       reload file [file, ..]
           Force (re-)loading of a module file. Typically used for debugging
           modules, where you reload the module after each modification to
           test it interactively.

           TODO: recursive switch that scans for 'use' statements

       help [topic|command command]
           Prints out a help text.

       which [-a|--all|-m|--module] ITEM
           Finds ITEM in PATH or INC if the -m or --module option was used.
           If the -a or --all option is used all it doesn't stop after the
           first match.

           TODO it should identify aliases

           TODO what should happen with contexts other then CMD ?

       jobs [-l,--list|-p,--pgids] job_spec ...
           Lists current jobs.

           If job specs are given as arguments only lists those jobs.

           The --pgids option only lists the process group ids for the jobs
           without additional information.

           The --list option gives more verbose output, it adds the process
           group id of the job and also shows the stack of commands pending
           for this job.

           This command is not POSIX compliant. It uses '-l' in a more verbose
           way then specified by POSIX. If you wat to make sure you have POSIX
           compliant verbose output try: "jobs -l | {! /^\t/}g".

       bg job_spec
           Run the job corresponding to jobspec as an asynchronous background
           process.

           Without argument uses the "current" job.

       fg job_spec
           Run the job corresponding to jobspec as a foreground process.

           Without argument uses the "current" job.

       wait
           TODO

       kill -l
       kill [-w | -s sigspec|-n signum|-sigspec] (pid|job_spec)
           Sends a signal to a process or a process group.  By default the
           "TERM" signal is used.

           The '-l' option list all possible signals.

           The -w or --wipe option is zoidberg specific. It not only kills the
           job, but also wipes the list that would be executed after the job
           ends.

       disown
           TODO

   Job specs
       TODO tell bout job specs

AUTHOR
       Jaap Karssenberg || Pardus [Larus] <pardus@cpan.org> R.L. Zwart,
       <rlzwart@cpan.org>

       Copyright (c) 2002 Jaap G Karssenberg. All rights reserved.  This
       program is free software; you can redistribute it and/or modify it
       under the same terms as Perl itself.

SEE ALSO
       Zoidberg, Zoidberg::Fish



perl v5.12.2                      2011-08-23       Zoidberg::Fish::Commands(3)
