# Some useful commands for setting permissions.
  #
  # Rory Hardy [GneatGeek]
  # Andrew Janke [apjanke]
  
  ### Aliases
  
  # Set all files' permissions to 644 recursively in a directory
  alias set644='find . -type f -print0 | xargs -0 chmod 644'
  
  # Set all directories' permissions to 755 recursively in a directory
  alias set755='find . -type d -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 -exec chmod $chmod_opts 755 {} \;
      if [[ $? != 0 ]]; then exit_status=$?; fi
      find "$target" -type f -exec chmod $chmod_opts 644 {} \;
      if [[ $? != 0 ]]; then exit_status=$?; fi
    else
      find "$target" -type d -print0 | xargs -0 chmod $chmod_opts 755
      if [[ $? != 0 ]]; then exit_status=$?; fi
      find "$target" -type f -print0 | xargs -0 chmod $chmod_opts 644
      if [[ $? != 0 ]]; then exit_status=$?; fi
    fi
    echo "Complete"
    return $exit_status
  }