ap.linux-apt+pac

#!/usr/bin/env bash
# common apt use

# As this script may be called from sudo, suggest safer permissions
l=($(ls -l `readlink -f $0`))
[ ${l[0]:2:1} != "-" ] && [ "${l[2]}" != "root" ] ||
[ ${l[0]:5:1} != "-" ] && [ "${l[3]}" != "root" ] ||
[ ${l[0]:8:1} != "-" ] && {
echo -e "Script uses or is called from sudo often.\nOnly root should be able to modify.\n${l[@]}\n";}


# Get usage_self()
# handle cases where user has linked script into their bin
if ! type usage_self >/dev/null 2>&1 ; then
	if readlink $0 >/dev/null 2>&1 ; then
		source $(dirname $(readlink $0))/humanism.sh usage_self
	else
		source $(dirname $0)/humanism.sh usage_self
	fi
fi

if [ $# -eq -0 ]; then
	usage_self
	exit
fi

command -v apt-get >/dev/null && APTGET=1
command -v pacman  >/dev/null && PACMAN=1 && unset APTGET
test -z "$APTGET" -a -z "$PACMAN" &&
echo "unknown package manager" && exit 1

# grep --color?
echo a | grep --color a >/dev/null 2>&1 &&
	alias grep="grep --color"
echo a | grep -E --color a >/dev/null 2>&1 &&
	alias grep -E="grep -E --color"

case "$1" in
  install)
  #Install package
	[ $APTGET ] && apt-get install --no-install-recommends ${@:2}
	[ $PACMAN ] && pacman -S ${@:2}
	;;
  reinstall)
  #Re-install package
	[ $APTGET ] && apt-get install --reinstall ${@:2}
	[ $PACMAN ] && pacman -S ${@:2}
	;;
  remove)
  #Uninstall and purge of all deps no longer required
	[ $APTGET ] && (
		# purge removes configs as well, install just the bin
		apt-get remove --purge --auto-remove ${@:2}
		# now remove any unneeded deps globlly
		apt-get -y autoremove )
	[ $PACMAN ] && pacman -Rs ${@:2}
	;;
  download)
  #Download package to local disk without extracting
	[ $APTGET ] && sudo apt-get install --download-only ${@:2}
	[ $PACMAN ] && pacman -Sw ${@:2} && echo see /var/cache/pacman/pkg/
    ;;
  extract)
  #Extract package file to current directory
	[ $APTGET ] && echo "todo. not yet available"
	[ $PACMAN ] && tar --preserve-permissions \
	               -xvf ${@:2} -C `pwd` --exclude .PKGINFO --exclude .INSTALL --exclude .MTREE --exclude .BUILDINFO
	;;
  update)
  #Update package database
	[ $APTGET ] && apt-get $*
	[ $PACMAN ] && pacman -Syyu
	;;
  updatesecurity)
  #Install security updates
	[ $PACMAN ] && echo "pacman systems require complete system update: pacman -Syu" && exit 1
	#echo -e "\nUPDATING CACHE\n"
	#apt-get update
	echo -e "\nTHE FOLLOWING PACKAGES WILL BE UPDATED:\n"
	unattended-upgrade --dry-run
	read -p "Run update? " answer
	while true; do
  		case $answer in
   		[yY]* )
			echo "Running"
			unattended-upgrade -d
           	break;;
   		[nN]* ) exit;;
   		* )     echo "Enter Y or N, please."; break ;;
  		esac
	done
	;;
  search)
  #Show packages available or already installed
	[ $APTGET ] && (
		echo -e "\nAVAILABLE:"
		apt-cache search $2 | grep -E -i "$2"
		echo -e "\nINSTALLED:"
		dpkg --list | grep -E -i "$2" )
	[ $PACMAN ] && (
		echo -e "\nAVAILABLE:"
		pacman -Ss $2 | grep -E -i "$2|$"
		echo -e "\nINSTALLED:"
		pacman -Qs $2 | grep -E -i "$2|$" )
	;;
  ownerof)
  #Show package for file
	[ $APTGET ] && (dpkg --search $2 | grep -i "$2")
	[ $PACMAN ] && pacman -Qo $2
	;;
  ineed)
  #Show packages that would provide a file if installed
	[ $APTGET ] && apt-file search "/$2" | grep -i -w "$2"
	[ $PACMAN ] && (
		(command -v pkgfile >/dev/null || (echo "missing pkgfile" && exit 1)) &&
		pkgfile -s -r ".*/$2.*" -v )
	;;
  ineedbadly)
  #Show any package that contains string
	[ $APTGET ] && apt-file search "$2" | grep -i "$2" # grep adds the coloring
	[ $PACMAN ] && (
		(command -v pkgfile >/dev/null || (echo "missing pkgfile" && exit 1)) &&
		pkgfile -s -g ".*$2.*" -v )
	;;
  info)
  #information about package
	[ $APTGET ] && apt-cache show $2
	[ $PACMAN ] && pacman -Si $2
	;;
  list)
  #show files installed by package
	[ $APTGET ] && dpkg -L $2
	[ $PACMAN ] && pacman -Ql $2
	;;
  upgrade)
  #upgrade package cache and package
	[ $APTGET ] && apt-get $@
	[ $PACMAN ] && pacman --sync --refresh && $0 install $2
	;;
  *)
  #pass through any other command on to apt-get
	[ $APTGET ] && apt-get $*
	[ $PACMAN ] && pacman $*
	;;
esac

exit 0