# Some useful commands for setting permissions. # # Rory Hardy [GneatGeek] # Andrew Janke [apjanke] ### Aliases # Set all files' permissions to 644 recursively in a directory set644() { find "${@:-.}" -type f ! -perm 644 -print0 | xargs -0 chmod 644 } # Set all directories' permissions to 755 recursively in a directory set755() { find "${@:-.}" -type d ! -perm 755 -print0 | xargs -0 chmod 755 } ### Functions # fixperms - fix permissions on files and directories, with confirmation # Returns 0 on success, nonzero if any errors occurred fixperms () { local opts confirm target exit_status chmod_opts use_slow_mode zparseopts -E -D -a opts -help -slow v+=chmod_opts if [[ $# > 1 || -n "${opts[(r)--help]}" ]]; then cat <<EOF Usage: fixperms [-v] [--help] [--slow] [target] target is the file or directory to change permissions on. If omitted, the current directory is taken to be the target. -v enables verbose output (may be supplied multiple times) --slow will use a slower but more robust mode, which is effective if directories themselves have permissions that forbid you from traversing them. EOF exit_status=$(( $# > 1 )) return $exit_status fi if [[ $# == 0 ]]; then target="." else target="$1" fi if [[ -n ${opts[(r)--slow]} ]]; then use_slow=true; else use_slow=false; fi # Because this requires confirmation, bail in noninteractive shells if [[ ! -o interactive ]]; then echo "fixperms: cannot run in noninteractive shell" return 1 fi echo "Fixing perms on $target?" printf '%s' "Proceed? (y|n) " read confirm if [[ "$confirm" != y ]]; then # User aborted return 1 fi # This xargs form is faster than -exec chmod <N> {} \; but will encounter # issues if the directories themselves have permissions such that you can't # recurse in to them. If that happens, just rerun this a few times. exit_status=0; if [[ $use_slow == true ]]; then # Process directories first so non-traversable ones are fixed as we go find "$target" -type d ! -perm 755 -exec chmod $chmod_opts 755 {} \; if [[ $? != 0 ]]; then exit_status=$?; fi find "$target" -type f ! -perm 644 -exec chmod $chmod_opts 644 {} \; if [[ $? != 0 ]]; then exit_status=$?; fi else find "$target" -type d ! -perm 755 -print0 | xargs -0 chmod $chmod_opts 755 if [[ $? != 0 ]]; then exit_status=$?; fi find "$target" -type f ! -perm 644 -print0 | xargs -0 chmod $chmod_opts 644 if [[ $? != 0 ]]; then exit_status=$?; fi fi echo "Complete" return $exit_status }