Conveniently find source code files (based on file extensions).

find-src.sh

#!/bin/bash                                                                                                          

usage() {
    while [ $# -gt 0 ]; do echo "$1"; shift; done
    echo "usage: $(basename $0) [options] [path ...]"
    echo "options:"
    echo "  -h   This usage information screen"
    echo "  -n   Dry run, just print command"
    echo "  -t   Explicit source file extn"
    echo
    echo "Note: defaults to \"find-src -t sh -t pl -t php -t py\""
    exit 1
}

DRY_RUN=0
CONDS=()
while getopts ":?hnt:" ARG "$@"
do
    case "${ARG}" in
        "?"|"h")
            usage
            ;;
        "n")
            DRY_RUN=1
            ;;
        "t")
            [ ${#CONDS[@]} -gt 0 ] && CONDS+=("-o")                                                                  
            CONDS+=("-name" "\"*.${OPTARG}\"")
            ;;
        "--")
            break
            ;;
    esac
done
shift $((OPTIND-1))

if [ ${#CONDS[@]} -eq 0 ]
then
    CONDS+=("-name" "\"*.sh\"")
    CONDS+=("-o")
    CONDS+=("-name" "\"*.pl\"")
    CONDS+=("-o")
    CONDS+=("-name" "\"*.php\"")
    CONDS+=("-o")
    CONDS+=("-name" "\"*.py\"")
fi

COMMAND=()
COMMAND+=("find")
COMMAND+=("$@")
for c in "${CONDS[@]}"
do
    COMMAND+=("${c}")
done

if [ $DRY_RUN -eq 1 ]
then
    echo "${COMMAND[@]}"
    exit 0
fi
eval ${COMMAND[@]}
exit $?