Para extraer uno o varios archivos de un paquete .deb (Debian package management system) hacemos uso del comando dpkg.
Lo primero que vemos es como listar contenido del paquete:
$ dpkg -c dsc-statistics-collector_201203250530-2_i386.deb drwxr-xr-x root/root 0 2012-12-16 00:08 ./ drwxr-xr-x root/root 0 2012-12-16 00:08 ./etc/ drwxr-xr-x root/root 0 2012-12-16 00:08 ./etc/cron.d/ -rw-r--r-- root/root 289 2012-12-16 00:08 ./etc/cron.d/dsc-statistics-collector drwxr-xr-x root/root 0 2012-12-16 00:08 ./etc/init.d/ -rwxr-xr-x root/root 6822 2012-12-15 16:31 ./etc/init.d/dsc-statistics-collector drwxr-xr-x root/root 0 2012-12-16 00:08 ./etc/default/ -rw-r--r-- root/root 1006 2012-12-15 16:31 ./etc/default/dsc-statistics-collector drwxr-xr-x root/root 0 2012-12-16 00:08 ./etc/dsc-statistics/ -rw-r--r-- root/root 4018 2012-12-16 00:08 ./etc/dsc-statistics/dsc-collector.cfg drwxr-xr-x root/root 0 2012-12-16 00:08 ./usr/ drwxr-xr-x root/root 0 2012-12-16 00:08 ./usr/share/ drwxr-xr-x root/root 0 2012-12-16 00:08 ./usr/share/doc/ drwxr-xr-x root/root 0 2012-12-16 00:08 ./usr/share/doc/dsc-statistics-collector/ -rw-r--r-- root/root 366 2012-12-15 16:31 ./usr/share/doc/dsc-statistics-collector/NEWS.Debian.gz -rw-r--r-- root/root 227 2012-12-15 16:31 ./usr/share/doc/dsc-statistics-collector/TODO.Debian -rw-r--r-- root/root 240411 2012-12-16 00:08 ./usr/share/doc/dsc-statistics-collector/dsc-manual.pdf.gz -rw-r--r-- root/root 1683 2012-12-16 00:09 ./usr/share/doc/dsc-statistics-collector/changelog.Debian.gz drwxr-xr-x root/root 0 2012-12-16 00:08 ./usr/share/doc/dsc-statistics-collector/examples/ -rw-r--r-- root/root 1766 2012-12-16 00:08 ./usr/share/doc/dsc-statistics-collector/examples/dsc.cfg.gz -rw-r--r-- root/root 2055 2012-12-15 16:31 ./usr/share/doc/dsc-statistics-collector/copyright drwxr-xr-x root/root 0 2012-12-16 00:08 ./usr/share/dsc-statistics-collector/ -rwxr-xr-x root/root 954 2012-12-16 00:08 ./usr/share/dsc-statistics-collector/upload-rsync -rwxr-xr-x root/root 1863 2012-12-16 00:08 ./usr/share/dsc-statistics-collector/upload-prep -rwxr-xr-x root/root 1161 2012-12-16 00:08 ./usr/share/dsc-statistics-collector/upload-x509 -rwxr-xr-x root/root 1001 2012-12-15 16:31 ./usr/share/dsc-statistics-collector/dsc-rsync-pull -rwxr-xr-x root/root 1433 2012-12-16 00:08 ./usr/share/dsc-statistics-collector/upload-ssh drwxr-xr-x root/root 0 2012-12-16 00:08 ./usr/share/man/ drwxr-xr-x root/root 0 2012-12-16 00:08 ./usr/share/man/man8/ -rw-r--r-- root/root 2155 2012-12-16 00:08 ./usr/share/man/man8/dsc.8.gz drwxr-xr-x root/root 0 2012-12-16 00:08 ./usr/bin/ -rwxr-xr-x root/root 162748 2012-12-16 00:08 ./usr/bin/dsc
Posteriormente desempaquetamos el contenido del paquete en una ruta temporal (/var/tmp por ejemplo):
$ dpkg -x dsc-statistics-collector_201203250530-2_i386.deb /var/tmp/dsc-statistics-collector
$ ls -l /var/tmp/dsc-statistics-collector/ total 8 drwxr-xr-x 6 root root 4096 2012-12-16 00:08 etc drwxr-xr-x 4 root root 4096 2012-12-16 00:08 usr
Ya podemos trabajar con los archivos del paquete. Si por ejemplo quiero visualizar el archivo «./etc/init.d/dsc-statistics-collector»:
$ more /var/tmp/dsc-statistics-collector/etc/init.d/dsc-statistics-collector #!/bin/bash # # Written by Hugo Haas <hugo@debian.org> for ippl. # Modified by Marc Haber <mh+debian-packages@zugschlus.de>. # Adapted for dsc-collector by Marc Haber <mh+debian-packages@zugschlus.de> ### BEGIN INIT INFO # Provides: dsc-statistics-collector # Required-Start: $local_fs $remote_fs $syslog $network $time # Required-Stop: $local_fs $remote_fs $syslog $network # Should-Start: # Should-Stop: