81Linux
Logical volume management – shrink an LVM
In a system with limited disk size, you might run out of disk space in one LVM mount while having plenty of space in another mount. If both LVMs are in the same volu
2 min read↗
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Linux.
Practical knowledge, one discovery at a time.
130 ARTICLES
82Linux
SSL certificate expiration date for a site or domain
When will the SSL certificate for a site expire or in how many days will an SSL certificate expire?
3 min read↗
83Linux
yum : show all yum directives
Per the man page, the yum-config-manager is "a program that can manage main yum configuration options, toggle which repositories are enabled or disabled, and add new
3 min read↗
84Linux
Docker – quick introduction. Part 2
In part 1 of this series, we saw how to pull Docker images from Docker Hub and launch Docker containers. We interacted with a running Docker container by running som
5 min read↗
85Linux
man page for crontab schedule format
The scheduling format for the Linux scheduling daemon cron are not easy to remember, especially if you don't work with cron that frequently. The first reaction for m
2 min read↗
86Linux
chown symbolic link
One of the most commonly used Linux system administration tools is chown, which is part of the coreutils package. It is used to change the user and/or group ownershi
2 min read↗
87Linux
Record ssh session using screen
Per the man page - "Screen is a full-screen window manager that multiplexes a physical terminal between several processes (typically interactive shells)". Screen is
3 min read↗
88Linux
shuffle files in a directory with python
I have a playlist file which contains audio files to play. The audio player unfortunately plays the music files in a sequential order, in whatever order they are lis
2 min read↗
89Linux
ngrep – insecure connections your browser is making
Ngrep is a very user friendly packet sniffer, basically the "grep" equivalent at the network layer.
2 min read↗
90Linux
Block all users from logging in to a system except for root
In some cases, you might want to block all users from logging in to the system or just after you login, you want to prevent everyone else from connecting to the serv
1 min read↗