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APROPOS
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1997-04-13
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103 lines
#!/bin/sh
#
# apropos -- search the whatis database for keywords.
#
# Copyright (c) 1990, 1991, John W. Eaton.
#
# You may distribute under the terms of the GNU General Public
# License as specified in the README file that comes with the man
# distribution.
#
# John W. Eaton
# jwe@che.utexas.edu
# Department of Chemical Engineering
# The University of Texas at Austin
# Austin, Texas 78712
#
# apropos-1.4d aeb 950220
#
OLDPATH=$PATH
PATH=/usr/local/bin:/bin:/usr/ucb:/usr/bin
libdir=/usr/lib
if [ $# = 0 ]
then
echo "usage: `basename $0` keyword ..."
exit 1
fi
manpath=`(PATH=$OLDPATH; /usr/bin/man --path) | tr : '\040'`
if [ "$manpath" = "" ]
then
echo "apropos: manpath is null"
exit 1
fi
if [ "$PAGER" = "" ]
then
PAGER="/usr/bin/less -is"
fi
# avoid using a pager if only output is "nothing appropriate"
nothing=
found=0
while [ $found = 0 -a -n "$1" ]
do
for d in $manpath /usr/lib
do
if [ -f $d/whatis ]
then
if grep -iq "$1" $d/whatis > /dev/null
then
found=1
fi
fi
done
if [ $found = 0 ]
then
nothing="$nothing $1"
shift
fi
done
if [ $found = 0 ]
then
for i in $nothing
do
echo "$i: nothing appropriate"
done
exit
fi
while [ $1 ]
do
for i in $nothing
do
echo "$i: nothing appropriate"
done
nothing=
found=0
for d in $manpath /usr/lib
do
if [ -f $d/whatis ]
then
if grep -i "$1" $d/whatis
then
found=1
fi
fi
done
if [ $found = 0 ]
then
echo "$1: nothing appropriate"
fi
shift
done | $PAGER
exit