bin/eachsubdir

#!/bin/bash
#

BASEDIR=`pwd`

usage="Execute a command in each subdirectory:\n\nUsage: $0 [-p | print subdir info] \"command\""

# More safety, by turning some bugs into errors.
# Without `errexit` you don’t need ! and can replace
# PIPESTATUS with a simple $?, but I don’t do that.
set -o errexit -o pipefail -o noclobber -o nounset

# -allow a command to fail with !’s side effect on errexit
# -use return value from ${PIPESTATUS[0]}, because ! hosed $?
! getopt --test > /dev/null 
if [[ ${PIPESTATUS[0]} -ne 4 ]]; then
    echo 'I’m sorry, `getopt --test` failed in this environment.'
    exit 1
fi

OPTIONS=phe:
LONGOPTS=print-subdir,help,exclude:

# -regarding ! and PIPESTATUS see above
# -temporarily store output to be able to check for errors
# -activate quoting/enhanced mode (e.g. by writing out “--options”)
# -pass arguments only via   -- "$@"   to separate them correctly
! PARSED=$(getopt --options=$OPTIONS --longoptions=$LONGOPTS --name "$0" -- "$@")
if [[ ${PIPESTATUS[0]} -ne 0 ]]; then
    # e.g. return value is 1
    #  then getopt has complained about wrong arguments to stdout
    exit 2
fi
# read getopt’s output this way to handle the quoting right:
eval set -- "$PARSED"

p=n 
exc=""
# now enjoy the options in order and nicely split until we see --
while true; do
    case "$1" in
        -p|--print-subdir)
            p=y
            shift
            ;;
        -h|--help)
            echo -e "Execute a command in each subdirectory:\n\nUsage: $0 [-p(--print-subdir) -e(--exclude) dir1, dir2,...,dirn)] \"command\""
            exit 0
            shift
            ;;
        -e|--exclude)
            exc="$2"
            shift 2
            ;;
        --)
            shift
            break
            ;;
        *)
            echo "Programming error"
            exit 3
            ;;
    esac
done

# handle non-option arguments
if [[ $# -ne 1 ]]; then
    echo "$0: A single command is required."
    exit 4
fi



for subdir in `find $BASEDIR -maxdepth 1 -type d`
do
    bn=`basename $subdir`
	if [[ $subdir != $BASEDIR ]] && [[ ",$exc," != *",$bn,"* ]]; then
        cd $subdir
        if [[ $p = "y" ]]; then
            echo -en "\n\n\033[1;33m╔"
            for ((i=1;i<=$((${#bn} + 2));i++)); do echo -n "═"; done ; echo "╗"
            echo "║ $bn ║"
            echo -n "╚"
            for ((i=1;i<=$((${#bn} + 2));i++)); do echo -n "═"; done ; echo "╝"
            echo -e "\033[00m"
        fi
        eval $1
	fi
done