A convenience wrapper around setfacl to facilitate sharing a file or directory with a user or group.

share_with.sh

# A convenience wrapper around setfacl to facilitate sharing a file or directory with a user or group.
# ex:
#    $ getfacl ~/test_directory
#       file: /root/test_directory
#       owner: root
#       group: root
#       user::rwx
#       group::r-x
#       other::r-x
#
#    $ share_with -u apache ~/test_directory
#
#    $ getfacl ~/test_directory
#       file: /root/test_directory
#       owner: root
#       group: root
#       user::rwx
#       user:apache:rwx
#       group::r-x
#       mask::rwx
#       other::r-x
#       default:user::rwx
#       default:user:apache:rwx
#       default:group::r-x
#       default:mask::rwx
#       default:other::r-x

share_with() {
    ug='u'
    while getopts ":u:g" opt; do
      case $opt in
        u)
          ug='u'
          shift
          ;;
        g)
          ug='g'
          shift
          ;;
      esac
    done
    if [ "$#" -ne 2 ]; then
      echo "Usage: $0 -u [USER] [PATH]" >&2
      echo "Usage: $0 -g [GROUP] [PATH]" >&2
      return 1
    fi
    if ! [ -e "$2" ]; then
      echo "$2 is not a file or directory" >&2
      return 1
    fi
    [ -d $2 ] && setfacl -Rm ${ug}:${1}:rwX,d:${ug}:${1}:rwX ${2}
    [ -f $2 ] && setfacl -m ${ug}:${1}:rwX ${2}
}