A simple bash script tool to edit startup applications on Linux.

startupcli

#!/bin/bash
# License::   GPLv3+
# Copyright:: 2017 Daniel Barrows
# Status::    beta


### CONSTANTS
[ -z $COLUMNS ] && COLUMNS="$(tput cols 2>/dev/null || echo 80)"
EXIT_HELP_MESSAGE=0
EXIT_FILE_NOT_FOUND=2
EXIT_USAGE_ERROR=7


### FUNCTIONS

show_usage(){
  cat <<EOS
  startupcli list
  startupcli add APP
  startupcli remove APP
  startupcli view APP
  startupcli shell
EOS
}

startupcli_argerr(){
  [[ $# < 2 ]] || startupcli_argerr "startupcli_argerr requires 0 or 1 arguments."
  local message="$1"; [ -z "$message" ] && "Wrong number of arguments given."
  echo "ERROR: $message" >&2
  exit $EXIT_USAGE_ERROR
}

# This accepts application names, filenames (eg. APP.desktop), or full paths,
# and adds it to startup.
startupcli_add(){
  [[ $# > 0 ]] || startupcli_argerr "startupcli_add requires at least one argument."
  for app in "$@"; do
    [ -z "${app##*.desktop*}" ] || app="$app.desktop"
    if [ -z "${app##/*}" ]; then
      local orig="$app"
      local dest=~/.config/autostart/$( basename -- "$app" )
    else
      local orig="/usr/share/applications/$app"
      local dest=~/.config/autostart/"$app"
    fi
    cp -ai "$orig" "$dest"
  done
}

# I'd like to the remove .desktop suffix, while also keeping the pretty-printing
# of ls, but I'm not sure how. This is a crude compromise.
startupcli_list(){
  if [ -t 1 ]; then
    ls ~/.config/autostart
  else
    ls ~/.config/autostart | sed -E 's/.desktop$//'
  fi
}

# This could compare with cached version and only delete when forced.
startupcli_remove(){
  [[ $# > 0 ]] || startupcli_argerr "startupcli_remove requires at least one argument."
  for app in "$@"; do
    [ -z "${app##*.desktop*}" ] || app="$app.desktop"
    rm ~/.config/autostart/"$app"
    # if diff -s "/usr/share/applications/$app" ~/.config/autostart/"$app"; then
  done
}

# This accepts application names, filenames (eg. APP.desktop), or full paths.
# Unless output is piped, this is displayed with a pager. If pygmentize is
# installed, this will display the file with syntax highlighting.
startupcli_view(){
  local app="$1"
  local fn="$app"
  [ -z "${fn##*.desktop*}" ] || fn="$fn.desktop"
  [ -z "${fn##/*}" ] || fn=~/.config/autostart/"$fn"
  if [ ! -e "$fn" ]; then
    echo "ERROR: No startup application known named '$app'." >&2
    echo "       No file found at '$fn'." >&2
    exit $EXIT_FILE_NOT_FOUND
  fi
  if [ -t 1 ]; then
    ( pygmentize -l ini "$fn" || cat "$fn" ) | less -R
  else
    cat "$fn"
  fi
}

# Autocomplete would be great here.
startupcli_shell(){
  [[ $# == 0 ]] || echo "WARNING: startupcli_shell arguments ignored: $*" >&2
  echo "Welcome to startupcli shell. Type 'help' for available commands, or 'quit' to exit."
  while read -p '> ' line; do
    case $line in
    q | quit | 'exit' ) break;;
    s | shell         ) echo "ERROR: Subshells not permitted." >&2;;
    h | -h | -? | help | --help | \
    a | add                     | \
    l | list                    | \
    r | rm | remove             | \
    v | view                    ) startupcli $line;;
    *                           ) $line;;
    esac
  done
}

### COMMAND LINE OPTIONS
startupcli(){
  command="$1"
  shift
  args=()

  for i in "$@"; do
    case "$i" in
    #-q  | --quiet         ) unset VERBOSE;;
    #-v  | --verbose       ) VERBOSE=true;;
    -h  | --help | '-?'   ) show_usage; return $EXIT_HELP_MESSAGE;;
    -*                    ) echo ERROR: unknown option: "'$i'" >&2
                            show_usage
                            return $EXIT_USAGE_ERROR;;
    *                     ) args+=( "$i" );;
    esac
  done

  case $command in
  h | -h | -? | help | --help ) show_usage; return $EXIT_HELP_MESSAGE;;
  a | add                     ) startupcli_add                    "${args[@]}";;
  l | list                    ) startupcli_list                   "${args[@]}";;
  r | rm | remove             ) startupcli_remove                 "${args[@]}";;
  v | view                    ) startupcli_view                   "${args[@]}";;
  s | shell                   ) startupcli_shell                  "${args[@]}";;
  *                           ) echo ERROR: unknown command: "'$command'" >&2
                                show_usage
                                return $EXIT_USAGE_ERROR;;
  esac
}

if [ "$(basename -- "$0")" = "startupcli" ]; then
  startupcli "$@"
fi