Adam Funk wrote: > On Tuesday 18 May 2004 10:40, Bob Proulx wrote: > > > I would backup /var/backups. That directory includes a copy of the > > I already back up /etc. Where do the /var/backups/dpkg.status.* files > come from?
The come from:
/var/lib/dpkg/status
> > dpkg status file and a few other tidbits from the system. From that
> > you can recreate your system. I use my own script to parse the data.
> > I can post that if there is interest.
>
> Yes, I'm interested.
It is a simple little ruby script from before I learned about
dpkg-ruby or any of the other parsing routines. The copyright
statement is bigger than the entire code. It is really a trivial
little script. But in any case it should give you a hint of what is
possible.
Bob
#!/usr/bin/env ruby
#
# Process a Debian status file and print out installed package names.
#
# Examples:
# dpkg.status.print-installed /var/lib/dpkg/status
# dpkg.status.print-installed /var/backups/dpkg.status.0
# zcat /var/backups/dpkg.status.1.gz | dpkg.status.print-installed
# dpkg.status.print-installed <(zcat /var/backups/dpkg.status.1.gz)
#
# The one-liner which is way too long but very useful.
#
# diff <(dpkg.status.print-installed /var/lib/dpkg/status | sort) \
# <(dpkg.status.print-installed <(zcat /var/backups/dpkg.status.1.gz) | sort)
#
################################################################
#
# Copyright (C) 2003 Bob Proulx <[EMAIL PROTECTED]>
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
#
################################################################
# Lines look like this:
# Package: telnet
# Status: install ok installed
# Package: wdiff
# Status: purge ok not-installed
packagename = ""
ARGF.each do |line| # Walk each line of all input files.
line.chomp! # Remove the newline from the end of the line.
if line =~ /^Package: +/
# Keep track of the current package name.
packagename = line.sub(/^Package: +/,'')
end
if line =~ /^Status: /
# Remove the header. Split the line into the three fields.
desired, status, state = line.sub(/^Status: +/,'').split
if status == "ok" && state == "installed"
# If the pkg was okay and installed then print the package name.
puts packagename
end
end
end
pgpp3ncSvlU03.pgp
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