ref: ed06d703439b70bdc4c5ff96d0d3749ccb8566c9
dir: /rc/bin/lookman/
#!/bin/rc
# Usage: lookman key ...
# prints out the names of all manual pages containing all the given keywords
rfork e
index=/sys/lib/man/lookman/index
t1=/tmp/look1.$pid
t2=/tmp/look2.$pid
fn sigexit {
rm -f $t1 $t2
exit
}
fn sigint sighup sigterm {
rm -f $t1 $t2
exit note
}
*=`{echo $*|tr A-Z a-z|tr -dc 'a-z0-9_. \012'} # fold case, delete funny chars
if(~ $#* 0){
echo usage: lookman key ... >/fd/2
exit usage
}
look $1 $index | sed 's/.* //' | sort -u >$t1
shift
for(i in $*){
look $i $index | sed 's/.* //' | sort -u |
awk 'BEGIN {
while (getline < "'$t1'" > 0)
table[$0] = 1
}
{ if (table[$0]) print }
' > $t2
mv $t2 $t1
}
sort $t1 | sed 's;/sys/man/;;
s;(.*)/(.*);man \1 \2 # \2(\1);'
exit ''