Archive for the ‘Linux’ Category

Delete all but the most recent files in Bash

I’ve been reviewing a few things I do and decided I need to be a bit smarter about managing backups. I currently purge by date only. Which is fine if everything is working and checked regularly. I wouldn’t want to return from a two week holiday to find my backups had been failing, nobody checked […]

Progress bars in BASH with pv

Way back in 2009 I wrote a post about how to display progress bars in Powershell. The same thing is possible in bash with pv. If it’s not available in your shell just do… ?View Code BASHyum install pv Or equivalent for your platform. The following example compresses a file into a tar archive reporting […]

Partitioning setup for Linux from Scratch in VirtualBox

I’ve finally taken the plunge and committed, to untarring and compiling, a bucket load of source code to complete Linux from Scratch. I’ll be documenting some of my setup here. I’m far from an expert, that’s why I’m doing this, but if you have any constructive criticism I’d be glad to hear it. I’m using […]

Highlight text using Grep without filtering text out

Here’s a neat little trick I learned today I thought was worth sharing. Sometimes I want to highlight text in a terminal screen using grep but without filtering other lines out. Here’s how you do it… ?View Code BASHmysqlbinlog mysql-bin.000473 | grep –color -E ‘^|not closed’; The important part is the regexp in grep. The […]

6 Useful Bash tips I wish I knew from day zero

Here’s a few bash commands tricks I wished I’d been shown when I first picked up the shell. Please share any additional favorites you have. Repeat the last command with sudo How often do you type… ?View Code BASHyum install long-list packages-devel Only to be told… You need to be root to perform this command. […]