Why doesn’t my screen lock in XFCE?
I’m trying out XFCE on Arch Linux, and for some reason the Lock Screen option in the session menu doesn’t do anything. Neither does running xflock4 at the command line (it exits 0 with no output).
Unix & Linux
Setup Debian Mirrors after Installation
Suppose I install debian,and my Internet network
comes down.
Install works OK,but at the time to setup the apt mirror
from list give error because network Internet is down.
I continue to install without mirror(apt/sources.list contain
only cdrom entry)
Internet work..how to setup the debian mirror after installation?
I know how to edit sources.list with vi,but I want the menu with
mirror list selection.
How to stop update-grub from scanning all drives?
Every time update-grub is run all hard drives are scanned. Each drives that is in standby state will spin up to go idle. This is a waste of energy. We use update-grub version 1.98:
How do I reduce the size of locale-archive?
I have a need to reduce the size of the locale-archive file on some of my RHEL6 systems.
How to disable one CPU
I’m trying to disable some CPUs of my server.
I’ve found this link: https://www.cyberciti.biz/faq/debian-rhel-centos-redhat-suse-hotplug-cpu/linux-turn-on-off-cpu-core-commands/, which offers me a method as below:
Is there line numbering for nano?
Is there a way to turn on line numbering for nano?
Bash variable substitution of variable followed by underscore
The variable BUILDNUMBER is set to value 230. I expect 230_ to be printed for the command echo $BUILDNUMBER_ but the output is empty as shown below.
Diff, show modified line from right file only
I have file a and b and I would like to output lines of b that changed since it was cloned from a. Just the modified lines, no surrounding context, no diff offset marks.
How should one set up full-disk encryption on OpenBSD?
Is there a preferred method to set up full-disk encryption under OpenBSD, similar to dm-crypt under Linux?