How to quickly remove a configuration from a whole bunch of files using the Linux utility SED
Every now and again, dread, you have a number of configuration files that have an incorrect value. Recently we encountered this problem on an Apache
Operating Systems
Supervisor Cheat Sheet
Cheats Close all running supervisor jobs supervisorctl stop all Errors on Forge Below is an error after deleting a site. This is related to this
WHOIS – What is it, and why is it so valuable?
One of the most useful utilities that hosts and ISPs and internet engineers use, is WHOIS. This utility has a golden feature – it will
How to create a new LVM disk in Ubuntu, and mount it all the way to fstab
Introduction & Explanation Why LVM? The reason why we love LVM is because when you need to increase the space it’s really easy. If you
BASH Cheat Sheet With StackOverflow References
Count lines in file wc -l laravel.log 169613 laravel.log Word count lines in Laravel.log Truncate lines from the beginning of a file tail -n +169000
I got a grub-rescue prompt and it was not fun but I learnt a lot
Here’s me on a weekend thinking I can upgrade a core server from Ubuntu 18.04 to 20.04. This is normally quite a risky undertaking depending
Couldn’t open /etc/securetty: No such file or directory
Background On a seemingly fresh and perfect server you might see the following events logged in the /var/log/auth.log file: May 14 06:29:52 SERVER gdm-password]: pam_unix(gdm-password:auth):
A Transcript of an Ubuntu 18.04 to Ubuntu 20.04 upgrade gone wrong due to memory and CPU constraints
During an online upgrade of an Ubuntu 18.04 server to Ubuntu 20.04, the system became unresponsive for over an hour. One idea was to reset
How to upgrade from php 7.3 to 7.4 or 8.0 on an Ubuntu 18.04 server
When facing the decision to upgrade an Ubuntu 18.04 server, you basically have two choices: Lower Risk Scenario 1. Upgrade just PHP. The hero in
How to see another user’s CRONTAB
Crontab Cheat Sheet Under Ubuntu or debian, you can view crontab by /var/spool/cron/crontabs/ and then a file for each user is in there. But hell