Debian

Removed unused packages

http://www.waveguide.se/?article=how-to-quickly-remove-all-unused-packages-under-debian

https://www.debian-administration.org/article/134/Removing_unnecessary_packages_with_deborphan

$ deborphan
$ deborphan --guess-data
$ deborphan --guess-all
$ dpkg --purge `deborphan --guess-all`
$ egrep '^Status: |^Package: ' /var/lib/dpkg/status | egrep -B 1 'half-installed|half-configured|unpacked|triggers-awaited|triggers-pending'
$ dpkg --audit

Annoying autorenaming in Guake

http://askubuntu.com/questions/254566/annoying-autorenaming-in-guake

First install gconf-editor

$ sudo apt-get install gconf-editor

Then run gconf-editor and browse to /apps/guake/general and unmarked use_vte_titles key

How do you uninstall a library in Linux?

http://stackoverflow.com/questions/1439950/whats-the-opposite-of-make-install-ie-how-do-you-uninstall-a-library-in-lin

If sudo make uninstall is unavailable:

In a debian based system, instead of doing make install

you can run sudo checkinstall (or .rpm etc. equivalent) to make a .deb that is also automatically installed. You can then remove it using synaptic

$ sudo checkinstall

Thunderbird

The Icedove debian package is an unbranded Thunderbird

The Enigmail is a security extension to Mozilla Thunderbird and Seamonkey.

It enables you to write and receive email messages signed and/or encrypted with the OpenPGP standard.

Sending and receiving encrypted and digitally signed email is simple using Enigmail.

Yandex Setting up mail clients

https://help.yandex.com/mail/mail-clients.xml

How to adjust screen lock settings on Linux debian desktop

To adjust screen lock settings from the command line, you can edit ~/.kde/share/config/kscreensaverrc.

Create the file if it does not exist. Once the file is edited, the change will automatically take effect immediately.

$ vi ~/.kde/share/config/kscreensaverrc

[ScreenSaver]
Lock=true
LockGrace=300000
PlasmaEnabled=false
Timeout=900

How to install Google Earth on Debian

# aptitude install googleearth-package
$ make-googleearth-package
$ apt-get install -f
# dpkg -i googleearth_4.2.205.5730+0.5.2-1_i386.deb

Restarting Networking

# systemctl restart  networking
# systemctl restart  network-manager

https://wiki.debian.org/NetworkManager

Package manager is locked

$ rm /var/lib/dpkg/lock /var/cache/apt/archives/lock /var/lib/apt/lists/lock

Some index files failed to download

$ sudo apt-get update
E: Some index files failed to download. They have been ignored, or old ones used instead.

It means that these sources cannot be reached, try selecting another server to fetch from.