How to get special characters on a Linux keyboard
On Linux Mint, you can get special characters by using the right Alt key. Press the right Alt key, and then then press the special
Operating Systems
How to recover a Linux Mint / Ubuntu System’s Root Password
This article explains how to get your Linux system password reset. To reset your lost or fogotten password: Reboot your computer / Turn your computer
How do you take a screenshot on a Linux desktop?
Printscreen works. If you’re using Chrome, try Awesome Screenshot, but it’s got flaws and sometimes just doesn’t work. 95% good, 5% bad. Otherwise, try: sudo
How do you continuously watch / monitor a Linux command?
Sometimes you want to continuously observe a Linux command. Instead of up arrow and enter the whole time, try this: watch -n 1 “systemctl is-active
ssh_dispatch_run_fatal: Connection to x.x.x.x port 22: DH GEX group out of range
You’re trying to SSH to a Zyxel switch and get the following message: user@hostname ~ $ ssh [email protected] -p 22 ssh_dispatch_run_fatal: Connection to x.x.x.x port
How to update the hostname on a Debian system
Try this command first too change your hostname: hostnamectl set-hostname newhostname Exit the terminal, and come back in. If that doesn’t work, also check the
How to see what’s running on a port in Linux
user@hostname ~ $ sudo lsof -i -P -n | grep LISTEN | grep 1025 mailcatch 1104 root 9u IPv4 27240 0t0
How to get a script to automatically start on startup on a Debian Linux System
Problem: After your system has started, you need a script to run always. Solution: On a typical Linux system you can simply created an /etc/rc.local
How to set up a fault tolerant / failover system on Linux
Problem: You need to make sure that your disks are 100% redundant. Solution: A popular way on Linux to do this is DRBD. Here are
Two good configuration files for DRBD and OCFS2
Problem: You need to know if your DRBD and OCFS2 disk fault tolerance has been setup correctly but the configuration options are overwhelming. Solution: See