Path: utzoo!utgpu!jarvis.csri.toronto.edu!clyde.concordia.ca!uunet!mcsun!hp4nl!star.cs.vu.nl!maart
From: maart@cs.vu.nl (Maarten Litmaath)
Newsgroups: comp.unix.questions
Subject: use my which (was: which/type & built-ins)
Message-ID: <5049@solo9.cs.vu.nl>
Date: 5 Jan 90 20:03:53 GMT
References: <1297@quintus.UUCP> <940@targon.UUCP>
Reply-To: maart@cs.vu.nl (Maarten Litmaath)
Organization: VU Informatika, Amsterdam, the Netherlands
Lines: 70

...if you want speed and no .cshrc quirks.  Manual follows.  See alt.sources
(or comp.sources.misc archive soon) or email.



WHICH(1)                 USER COMMANDS                   WHICH(1)



NAME
     which - give alias, function or path expansion of command

SYNOPSIS
     which [ -i ] [ -a ] [ -- ] [ command ]

DESCRIPTION
     Which provides the user with the full expansion of the  com-
     mand argument, be it either an alias, a shell function or an
     executable file (default). To enable search for aliases  and
     shell  functions the user should supply the `-i' (= interac-
     tive) flag. In that case which expects as standard input the
     expansion  of  the alias or shell function.  If the standard
     input is empty or the `-i' flag has not  been  given,  which
     will try to locate command in the user's PATH.  The interac-
     tive mode is easily used by setting an alias like  the  fol-
     lowing:

          alias     which     alias !\$ \| /usr/local/bin/which -i !\*

     in csh, or

          alias     which     eval alias '\"\$$#\" |' \
                    /usr/local/bin/which -i '${1+"$@"}'

     in shells which are supersets of sh and which know  aliases.
     If your shell has shell functions, you can use the following
     function:

          which()
          {
               eval last=\"\$$#\"
               set | sed -n "/^$last(){$/,/^}$/p" |
                    /usr/local/bin/which -i ${1+"$@"}
          }

     If the `-a' (= all) flag is given, which will not stop after
     the first `match', but search for all occurrences of command
     in the user's PATH. The `--' flag can be  used  to  end  the
     list  of  options:  the  next  argument (if present) will be
     taken as command, even if it starts with a `-'.  Which  [-i]
     [-a]  [--]  without further arguments prints the user's PATH
     broken up into its components, one per line.

     This new version of the which command is not a  csh  script.
     Being  an  executable  it  is  much faster, and not sourcing
     .cshrc it gives a true picture of one's aliases.

EXAMPLE
     % alias
     which     alias !$ | /usr/local/bin/which -i !*
     % which which
     which     alias !$ | /usr/local/bin/which -i !*
     % which -a which
     which     alias !$ | /usr/local/bin/which -i !*
     /usr/local/bin/which
     /usr/ucb/which
     %
-- 
1755 EST, Dec 14, 1992: Henry Spencer is put on a one-way mission to the moon.|
  Maarten Litmaath @ VU Amsterdam:  maart@cs.vu.nl,  uunet!mcsun!botter!maart