77 lines
1.4 KiB
Bash
77 lines
1.4 KiB
Bash
#!/bin/sh
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#
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# apropos -- search the whatis database for keywords.
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#
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# Copyright (c) 1990, 1991, John W. Eaton.
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#
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# You may distribute under the terms of the GNU General Public
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# License as specified in the README file that comes with the man
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# distribution.
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#
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# John W. Eaton
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# jwe@che.utexas.edu
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# Department of Chemical Engineering
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# The University of Texas at Austin
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# Austin, Texas 78712
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#
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# rewritten by Wolfram Schneider, Berlin, Feb 1996
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#
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# $Id: $
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PATH=/bin:/usr/bin:$PATH
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db=whatis # name of whatis data base
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grepopt=''
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# argument test
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case $# in 0)
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echo "usage: `basename $0` keyword ..." >&2
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exit 1
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;;
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esac
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case "$0" in
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*whatis) grepopt='-w';; # run as whatis(1)
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*) grepopt='';; # otherwise run as apropos(1)
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esac
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# test manpath
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manpath=`%bindir%/manpath -q | tr : '\040'`
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case X"$manpath" in X)
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echo "`basename $0`: manpath is null, use \"/usr/share/man\"" >&2
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manpath=/usr/share/man
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;;
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esac
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# reset $PAGER if $PAGER is empty
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case X"$PAGER" in X)
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PAGER="%pager%"
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;;
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esac
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# search for existing */whatis databases
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mandir=''
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for d in $manpath
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do
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if [ -f "$d/$db" -a -r "$d/$db" ]
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then
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mandir="$mandir $d/$db"
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fi
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done
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case X"$mandir" in X)
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echo "`basename $0`: no whatis databases in $manpath" >&2
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exit 1
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esac
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for manpage
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do
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if grep -hi $grepopt "$manpage" $mandir; then :
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else
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echo "$manpage: nothing appropriate"
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fi
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done | $PAGER
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