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#!/bin/sh
# Read grep(1) patterns from input and search for them in the given files
# Check the arguments
if [ "$#" -eq 0 ] ; then
printf >&2 'rgl: Need at least one filename\n'
exit 2
fi
# Iterate over the patterns and search for each one; if the input is a terminal
# include a slash prompt for the next pattern
while {
[ -t 0 ] && printf /
read -r pat
} ; do
grep -- "$pat" "$@"
done
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