Showing headlines posted by linuxnix

The dd command stands for “data duplicator” and used for copying and converting data. It is very powerful low level utility of Linux which can do much more like ...

GREP is a command line search utility or tool to filter the input given to it. Grep got its name from ed editor as g/re/p (global / regular expression / print).

The Command df “disk file system” is one of the very powerful tools every system admin should know. when mastering this command you should understand lot of information about your local and remote file system details like mount point,

I feel man is one of the frequently used command along ls and cd commands in Linux. Have some more which you think we use frequently then post it in comments. Many people who are new to Linux do not know its potential.

The history /etc folder in Linux/Unix

This is a small how to on listing installed software in Redhat/Centos/Fedora Linux OS. We already written a post on how to get installed package details for Ubuntu machines. Some times we require to list software which are already installed so that we will not redo the same work by installing it once again.

Example 1: To list installed software execute below command

In Linux every activity is monitored and logged in to their respective logs in /var/log folder. The depth of log information is dependent on the log configuration we did it in /etc/logrotate.d and we have to rotate them all the time to control how much space they use.

In some situations when executing a command or a Linux shell script we may require some manual intervention. The yes command is simple built-in command which will help you remove this manual intervention stuff in your scripts. The yes command is a cousin of echo command both print what we given. Only difference is echo will print only once, but yes will print until we intervene. Below are some examples which will come handy when simulating yes/no in scripts/commands

This is our second post on compression and archiving series. Today we will see how to use gzip and gunzip commands with examples. Gzip(GNU zip) is a compress tool which is available in most of the Linux/Unix based operating systems.

This is a small post on how to crate multiple files/folders, sequence generation with flower brackets in-order to save valuable time

Mounting takes place before a computer can use any kind of storage device (such as a hard drive, CD-ROM, or network share). The user or their operating system must make it accessible through the computer’s file system. A user can only access files on mounted media —From Wikipedia.

This is next to SUID in our ongoing Linux file and folder permissions series. We already discussed about CHMOD, UMASK, CHOWN, CHGRP, SUID, StickyBit and SUDO concepts in our previous posts. In this post we will see

Today we will see how to list USB devices in Linux and their properties such as speed, BUS, class, type details etc. This is part of our on going hardware detection series. We already covered following stuff.

Linux: Load kernel modules at boot-up

Bash shopt command explained with examples. Shopt(SHell OPTions) is a built-in command to change the properties of a shell such as..Its history behavior, Spell check, Enable special characters for echo command by default and many more.

Command chaining is a concept to execute two or more commands in one shot to increase .. productivity Reduce system resource usage(In some cases ) Short and sweet codes . In this post we will see how to use different command chaining operators available for us in an easy way. Command chaining operators & –Forking