A script which is used to find class or package by name from jar files.

jargrep.sh

#!/bin/bash
# usage: jargrep.sh <name> [path ...], name can be package name or class name
# example: jargrep.sh org.apache.commons, jargrep.sh TypeSafeMatcher ~/.m2

# The minimum size of a zip file is 22 bytes. http://en.wikipedia.org/wiki/Zip_(file_format)

if [ $# -lt 1 ]; then
    echo "Usage: $0 name [path ...]";
    exit 2;
fi

name=${1//./\/};
shift;
path=${@:-.};

function check-jar() {
    jar -tf "$1" | grep -iH --label "$1" "$name";
}

status=1;

while read -r -d '' jarfile; do
     check-jar "$jarfile" && status=0;
done < <(find $path -type f -name '*.jar' -size +22c -print0)

exit $status;