Tags: command line

Linux Command To Put Your Ubuntu Laptop or Netbook In Hibernate/Suspend Mode

How do I suspend or hibernate from bash shell command line under Linux operating systems? How do I suspend or hibernate my Ubuntu Dell laptop using command line, without using additional software? This tutorial explains how to suspend/hibernate from command line on Ubuntu Linux 16.04 LTS and Fedora...
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Chrooting Apache 2.4 with mod_unixd on Debian 8 (Jessie)

This guide explains how to set up mod_unixd with Apache on a Debian 8 system. With mod_unixd, you can run Apache in a secure chroot environment (similar to the older mod_chroot) and make your server less vulnerable to break-in attempts that try to exploit vulnerabilities in Apache or your installed...
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Modifying ISO images
Learn how to add external packages to your raw images for a custom Linux spin.

How to Modify a Raw Disk Image of Your Custom Linux Distro

SUSE Studio is pretty awesome for building custom Linux spins. When you have designed your spin to your liking, you can download what’s known as a "raw image" that you can copy to a USB thumbdrive, and... Hey presto! You've got yourself a tailor-made distro on a stick! There is one serious caveat,...
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Make your OpenSSH sessions more secure with these simple tips.

5 SSH Hardening Tips

When you look at your SSH server logs, chances are they are full of attempted logins from entities of ill intent. Here are 5 general ways (along with several specific tactics) to make your OpenSSH sessions more secure. 1. Make Password Auth Stronger Password logins are convenient, because you can...
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Process tree
Learn how to count processes, see the access permissions and memory regions for a particular process, and more in this tutorial.

Make Peace With Your Processes: Part 5

In previous articles in this series, we’ve whet our whistles with a quick look at the Process Table and pseudo filesystems, and we talked about /dev and /proc. Now let’s explore a few useful but unrelated command lines, which may save the day at some point. Counting Processes You might be concerned...
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The Unix principle of "everything is a file" applies to the Process Table. Learn more in this tutorial.

Make Peace With Your Processes: Part 4

The principle of basing as much as possible on Unix-like systems around files is a well-advised approach. It could be said that this principle also extends to the Process Table, which I have discussed in previous articles in this series. Consider, for example, the treasure trove of gems to be found...
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process tree
Learn how to use the ps command to identify parent and child processes.

Make Peace With Your Processes: Part 3

In parts 1 and 2 of this series, I introduced the ps command and provided tips on how to harness some of its many options to find out which processes are running on your system. Now, picture a scene in which you want to check for the parents of a process, which I’ll look at more closely in a...
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The First Five Linux Command-Line Apps Every Admin Should Learn

Linux has taken over the enterprise. It runs the backbone for many of the largest companies. It's one of the biggest players in big data. If you're serious about moving up the IT ladder, at some point, you're going to have to know Linux. And although the Linux GUI tools are now as good as those...
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How to burn .iso to USB drive

CD/DVD drives have gone obsolete and USB drives have become more popular and cheaper now. Thats the reason we prefer to use USB drives instead of CD or DVD to install a new system.    There are many utilities available which can do this. UNetbootin (http://unetbootin.sourceforge.net/) is one of ...
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