mgrep

早期freebsd实现

MANDIR=/usr/man
TMPDIR=/usr/man/tmp

date > $TMPDIR/greps
echo "Grep list:  $*" >> $TMPDIR/greps
echo >> $TMPDIR/greps

for pattern in $*
do
	echo "\n================" >> $TMPDIR/greps
	echo "$pattern:" >> $TMPDIR/greps
	for dir in 1 2 3 4 5 6 7 8
	do
		cd $MANDIR/man$dir
		echo "cat <<'EOF' >---------------" >> $TMPDIR/greps
		echo "Section $dir" >> $TMPDIR/greps
		grep $pattern *.* >> $TMPDIR/greps
	done
done