Re: potato -> woody upgrade not smooth...

[Dan Christensen <jdc@uwo.ca>]

> 1)  So "apt search" will do the equivalent of "apt-cache search".
> 
> 2)  "apt install" will do the equivalent of "apt-get install"
> 
> 3)  "apt upgrade" will do the equivalent of "apt-get upgrade"
> 
> 4)  "apt reconfig" will do the equivalent of "dpkg-reconfigure"
> 
> 5) "apt help" will tell the user all of things they can do.  (Imagine!

I use the following script.  It's primitive and doesn't do any
sanity checking, but I find it really useful.  If someone wants
to package it (I'm not a developer), that'd be fine with me.

Dan

#!/bin/sh

# apt:
# 
# A very primitive tool that unifies apt-get, apt-cache, 
# dpkg --set-selections, and dpkg-reconfigure.
# Additions and refinements welcome.  jdc@uwo.ca
# Released under the GPL.

dpkghold()
{
  TODO=$1; shift
  for i in $@; do echo "$i $TODO"; done | dpkg --set-selections
}

case $1 in
    help)
	echo "Usage:  apt command [packages...]"
	echo
	echo "Valid commands are update, install, remove, dist-upgrade,"
	echo "upgrade, source, show, search, hold, unhold, reconfig, check,"
	echo "clean, autoclean."
	;;
    update|install|remove|check|source|clean|autoclean|dist-upgrade|upgrade)
	apt-get $*
	;;
    show)
	apt-cache $* | less
	;;
    search)
	apt-cache $*
	;;
    hold)
	dpkghold $*
	;;
    unhold)
    	shift; dpkghold install $@
	;;
    reconfig)
	shift; dpkg-reconfigure $@
	;;
# The high option is a hack really meant for local use.
    high)
    	echo "Displaying packages with urgency=high:"
	echo "'apt autoclean' recommended beforehand."
	sleep 2
	(find /var/cache/apt/archives -type f -name \*.deb -print;
	 [ -e /var/mirrors ] && find /var/mirrors -type f -name \*.deb -print) |
	while read file; do
	  (apt-listchanges $file || (echo error reading $file 1>&2) ) |
	  grep urgency=\\\(high\\\|critical\\\) && echo $file
	done
	;;
    *)
    	echo Unknown option:  $1.
	exit 1
	;;
esac