download, compile and put jsmin in the path, mode of use: jsmin < application.js >application.min.js

jsmin.c

#!/bin/sh

TEMP_DIR="/tmp/jsmin"
SRC_FILENAME="http://www.crockford.com/javascript/jsmin.c"
SRC_BASENAME="jsmin.c"
BIN_BASENAME="jsmin"
BIN_DIR="/bin"

mkdir $TEMP_DIR
cd $TEMP_DIR
curl --output $SRC_BASENAME $SRC_FILENAME
gcc $SRC_BASENAME -o $BIN_BASENAME
cp $BIN_BASENAME $BIN_DIR && echo "$BIN_BASENAME copied to $BIN_DIR"
cd -
rm -rf $TEMP_DIR