usr/src/usr.bin/which/which.csh

#!/bin/csh
#
# DO NOT USE "csh -f"
#
# Copyright (c) 1983 The Regents of the University of California.
# All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions
# are met:
# 1. Redistributions of source code must retain the above copyright
#    notice, this list of conditions and the following disclaimer.
# 2. Redistributions in binary form must reproduce the above copyright
#    notice, this list of conditions and the following disclaimer in the
#    documentation and/or other materials provided with the distribution.
# 3. All advertising materials mentioning features or use of this software
#    must display the following acknowledgement:
#       This product includes software developed by the University of
#       California, Berkeley and its contributors.
# 4. Neither the name of the University nor the names of its contributors
#    may be used to endorse or promote products derived from this software
#    without specific prior written permission.
#
# THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
# ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
# SUCH DAMAGE.
#
#       @(#)which.csh   5.5 (Berkeley) 4/18/91
#

#       which : tells you which program you get
#
set prompt = "% "
set noglob
foreach arg ( $argv )
    set alius = `alias $arg`
    switch ( $#alius )
        case 0 :
            breaksw
        case 1 :
            set arg = $alius[1]
            breaksw
        default :
            echo ${arg}: "      " aliased to $alius
            continue
    endsw
    unset found
    if ( $arg:h != $arg:t ) then
        if ( -e $arg ) then
            echo $arg
        else
            echo $arg not found
        endif
        continue
    else
        foreach i ( $path )
            if ( -x $i/$arg && ! -d $i/$arg ) then
                echo $i/$arg
                set found
                break
            endif
        end
    endif
    if ( ! $?found ) then
        echo no $arg in $path
    endif
end