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Archive of posts filed under the linux category.

A framework for BackupPC‘s pre/post scripts

Use the same framework for all hosts, and run per-host scripts where needed.

(Semi-)Automated ~/.ssh/config management

Shorten your ssh commands, but in a kludgy way.

File encryption on the command line

This list is just a reference which hopefully saves some googling. Let's make it clear that we're talking about symmetric encryption here, that is, a password (or better, a passphrase) is supplied when the file is encrypted, and the same password can be used to decrypt it. No public/private key stuff or other preparation should […]

Port mirroring with Linux bridges

Port mirroring with the most popular Linux bridge implementations.

Many ways to encrypt passwords

TMTOWTDI, even for password hashing.