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Download Debian reference guide (23 Feb 2010)
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Debian Reference 74 / 265 Tip If the archive is located on the local filesystem, you can use "deb file:///home/foo/debian/ ..." instead. 2.7.13 Recording and copying system configuration You can make a local copy of the package and debconf selection states by the following. # dpkg --get-selections ’*’ > selection.dpkg # debconf-get-selections > selection.debconf Here, "*" makes "selection.dpkg" to include package entries for "purge" too. You can transfer these 2 files to another computer, and install there with the following. # # # # dselect update debconf-set-selections < myselection.debconf dpkg --set-selections < myselection.dpkg apt-get -u dselect-upgrade # or dselect install If you are thinking about managing many servers in a cluster with practically the same configuration, you should consider to use specialized package such as fai to manage the whole system. 2.7.14 Converting or installing an alien binary package alien(1) enables the conversion of binary packages provided in Red Hat rpm, Stampede slp, Slackware tgz, and Solaris pkg file formats into a Debian deb package. If you want to use a package from another Linux distribution than the one you have installed on your system, you can use alien to convert it from your preferred package format and install it. alien also supports LSB packages. Warning alien(1) should not be used to replace essential system packages, such as sysvinit, libc6, libpam-modules, etc. Practically, alien(1) should only used for non-free binary-only packages which are LSB compliant or statically linked. For free softwares, you should use their source packages to make real Debian packages. 2.7.15 Extracting package without dpkg The current "*.deb" package contents can be extracted without using dpkg(1) on any Unix-like environment using standard ar(1) and tar(1). # ar x /path/to/dpkg_<version>_<arch>.deb # ls total 24 -rw-r--r-- 1 bozo bozo 1320 2007-05-07 00:11 control.tar.gz -rw-r--r-- 1 bozo bozo 12837 2007-05-07 00:11 data.tar.gz -rw-r--r-- 1 bozo bozo 4 2007-05-07 00:11 debian-binary # mkdir control # mkdir data # tar xvzf control.tar.gz -C control # tar xvzf data.tar.gz -C data You can also browse package content using the mc command.
