<> {{{#!highlight sh # What packages use the most disk space? dpkg-query -W -f='${Installed-Size;10}\t${Package}\n' | sort -n # Reinstall conf files sudo dpkg -i --force-confmiss /var/cache/apt/archives/whatever*deb sudo aptitude install -o 'Dpkg::Options::=--force-confmiss' whatever # Doesn't work? # Remove old kernels # from: http://chr4.org/blog/2013/08/04/apt-get-cleanup-commands/ apt-get purge $(dpkg --list |egrep 'linux-image-[0-9]' |awk '{print $3,$2}' |sort -nr |tail -n +2 |grep -v $(uname -r) |awk '{ print $2}') # List packages that are uninstalled, but configuration remains dpkg --list |grep '^rc' |awk '{print $2}' # Remove those packages apt-get purge -y $(dpkg --list |grep '^rc' |awk '{print $2}') apt-get autoremove -y # Remove dependencies no longer required # Save automatically installed packages aptitude search '?installed?not(?automatic)' -F %p > packages.txt # or apt-mark showmanual > packages.txt # ...then install those packages... aptitude install `cat packages.txt` # This may contain too many packages, so instead run: cat packages.txt | xargs -n 100 aptitude install --schedule-only; aptitude }}} == Building packages == If using dpkg-buildpackage to build a customized package (one for which you've not made a formal patch), you may get an error that looks like: {{{ dpkg-source: info: using source format `3.0 (quilt)' dpkg-source: info: building cairo using existing ./cairo_1.13.0~20140204.orig.tar.xz dpkg-source: info: local changes detected, the modified files are: cairo-1.13.0~20140204/src/cairo-ft-font.c dpkg-source: info: you can integrate the local changes with dpkg-source --commit dpkg-source: error: aborting due to unexpected upstream changes, see /tmp/cairo_1.13.0~20140204-0ubuntu1.diff.Rho4ow dpkg-buildpackage: error: dpkg-source -b cairo-1.13.0~20140204 gave error exit status 2 }}} This is because dpkg-buildpackage wants to create a source package, but with an unexpected change a source package may get built that does not match the binary. To fix this, pass the '-b' option to only build a binary: {{{#!highlight sh dpkg-buildpackage -b -uc }}} To build for another architecture (cross compile), use {{{#!highlight sh dpkg-buildpackage -b -uc -ai386 }}} == Building packages from another distribution (e.g. testing) == Add deb-src line for the repository (Q: how do you specify from where to fetch the package?). Then: {{{#! highlight sh aptitude install build-essential fakeroot devscripts apt-get build-deb $PACKAGE apt-get -b source $PACKAGE # Install the created *.deb file }}} == Fixing locale issues == tl;dr: use UTF-8. To set the system default locale: {{{#! highlight sh numbers=off sudo update-locale LANG=en_US.UTF-8 }}} If this doesn't work, may need to regenerate locale: {{{#! highlight sh sudo locale-gen en_US.UTF-8 }}} if this fails, may need to use dpkg interactively: {{{#! highlight sh sudo dpkg-reconfigure locales }}} and select en_US.UTF-8. == Links == * [[https://cdimage.debian.org/cdimage/unofficial/non-free/cd-including-firmware/|Unofficial non-free installation images including firmware packages]] ---- CategoryCheatSheet