Call geordi clean from a project root to remove unused and unnecessary files inside it.

This script is part of our geordi gem on github. In Geordi > 1.2 you can call geordi clean.

The way MySQL's FULLTEXT tokenizer splits text into word tokens might not always be what you need. E.g. it splits a word at period characters.

Since the tokenizer has near-zero configuration options (minimum word length and stopwords list), you n...

When using the screen tool you may be unable to start a screen session but instead encounter an error:

Cannot open your terminal '/dev/pts/0' - please check.

This is because another user (you) initiated the current terminal -- you probably...

If you want to manually check if e-mail delivery works on a machine by sending an e-mail you can run the following:
mail -s Test someone@example.com < /dev/null

This will send an empty e-mail with "Test" as its subject to `someone@example.com...

We regularly need to connect to the server in order to e.g. access the production console. Guessing the Capistrano deploy user and then again guessing the right directory on the server is awkward, so we wrote a script that parses config/deploy and...

In shell scripts you can use $1 to refer to the first argument, $2 for the second, etc. If you want to refer to all arguments (e.g. when writing a bash script that takes an arbitrary amount of arguments and passes them on to another call), you...

When you need to bulk rename files you can not call "mv *.foo *.bar" to change the extension of all .foo files to bar (because bash resolves wildcards and replaces them with the list of matched files).

This works on linuxes who use the ...

If others on a call (Skype, SIP, ...) can not hear you loud enough, your volume levels are probably too low. Also, Skype may be changing your mixer levels.

Set a proper recording volume

1. Open your mixer software (run pavucontrol).
2. Switc...

When you print something from within your .bashrc file you will run into trouble when copying something onto your machine using scp for example.

This is because the output from your .bashrc interferes with scp. The solution is to decide w...