...find such an entry you may need to add it yourself -- the command for Ubuntu's default terminal is gnome-terminal. Be aware that many programs use shortcuts of their...
...couldn't successfully execute a simple iptables command and got this error on an Ubuntu server: # /sbin/iptables -I INPUT .... iptables: No chain/target/match by that name The cause was that two...
...modules weren't loaded: xt_multiport and xt_comment. Normally Ubuntu loads them automatically, but not this time due to another problem...
...forget to restart after editing the sshd_config: sudo service ssh restart (Tested on Ubuntu...
...are on natty, precise, quantal, or something else? Check /etc/lsb-release. $ cat /etc/lsb-release DISTRIB_ID=Ubuntu DISTRIB_RELEASE=12.04 DISTRIB_CODENAME=precise DISTRIB_DESCRIPTION="Ubuntu 12.04.2 LTS" Or, use the lsb...
...release command: $ lsb_release -cd Description: Ubuntu 14.04.1 LTS Codename: trusty
Note that if you plan to downgrade Firefox because your Selenium tests broke after a Firefox upgrade, there is a...
When you have a program running in a hidden X screen (like with Xvfb for Selenium tests) you may want...
killall gnome-panel This will terminate all gnome-panel processes. On my machine (Ubuntu 11.04) the panel then restarted itself after a moment. If the panel does not automatically...
...did not work in any application. Turns out that keyboard combination was hijacked by Ubuntu as it's the default for switching input languages (i.e. keyboard layouts). If you use...
If others on a call (Skype, SIP, ...) can not hear you loud enough, your volume levels are probably too low...
I've got often this error on just one server: Err http://de.archive.ubuntu.com precise/universe amd64 Packages 404 Not Found [IP...
Note that you cannot currently use Ruby 1.9.2 with Rails 2 applications that use RSpec, so don't upgrade if...
If you are exchanging files with a client via Dropbox you do not need to access the Web page every...
You probably already manage servers you often connect to inside the ~/.ssh/config file. What is nice: you may define alias...
In order to rename your Ubuntu box, replace all occurences of the the old name in the following two files: /etc/hostname /etc/hosts After a reboot your hostname is changed. If...
...you don't want to reboot your Ubuntu box you have to execute hostname your.hostname...
Ubuntu is phasing out the notification area (a.k.a. “system tray”), because of its ineffectiveness at notifying people of things, and its inconsistent behavior. Many programs that previously used the notification...
Use the PDF toolkit: sudo apt-get install pdftk To rotate page 1 by 90 degrees clockwise: pdftk in.pdf cat...
After a new system installation, Ubuntu One starts automatically and seems to try to sync your complete home directory. This slows down the Nautilus File Manager extremely. To prevent this...
...uncheck Ubuntu One from your start programs and restart the system...
...not work even though the front mic input did fine. The Pulse Audio mixer (= Ubuntu default) does not offer any complex controls to fix the issue. Instead, run gamix (be...
You need to disable "Bluetooth low energy", then follow these core steps: Make sure the headphones are in pairing mode...
Usually, the logrotate service takes care of renaming log files each night or so to avoid logs becoming huge. That...
dmesg shows the kernel ring buffer containing low-level system messages. Per default, dmesg shows a timestamp:
I have a pair of headphones connected to my desktop's back panel and a headset connected to the front...
If you want to use Require group $GROUPNAME on your default Apache installation like this: Order allow,deny Allow from...
Keyboard layout reverting to US on (every) reboot Cause: I found the same problem, but only on my wife...