If you think that the operations about users are only: creation, deletion and change of the passwords you are in error, in the standard GNU/Linux system about authentication and authorization of users there are some interesting flags regarding the age of an account. These parameters are usually ignored, but can be very useful in particular [...]
Linux system info, cheat sheet
This is a small collection of commands that can give you information on a Linux computer. Most of this commands can be run as non-privileged user, but more information can be obtained if (and should be) run as root: General system information: # uname -a List all hardware lshw |less Alternative with Gtk frontend lshw-gtk [...]
The dd command on Linux terminal.
dd seem an unfriendly command, but if you start to use it, you’ll see that it’s a powerful command able to do many different things, backup a partition, CD or USB stick for example or do some simple tests on the speed of your disks or your CPU. The man page say: dd is an [...]
readlink – Follow links for you
Sometimes happen that you find a sequence of links, and so you should start to follow them to see exactly what command are you about to run, or the directory used in that symbolic link, or you can use readlink. readlink it’s contained in the package coreutils, so you should already have it. The basic [...]
Watch – Run a command forever on the terminal
Sometimes is useful to run over and over again the same command until something happen, for example you could do a ls -lrt until a file has reached a certain dimension or is created, how to do it ? Sure you can use bash history and use up arrow and return over and over again, [...]