How To Monitor Linux Memory Usage with Watch Command
Hi all, today I'm going to teach you not one, but two really cool things in one post! First, I'll introduce you to advanced memory usage stats available on Linux systems through /proc/meminfo file, and...
View ArticleUse /proc/version to identify your Linux release
Hi everyone, I'm finally back from my holidays, and simply cannot wait to share some more Unix tips with all of you! Today I'll talk a bit more about yet another way of learning version information...
View ArticleHow To Confirm if Your CPU is 32bit or 64bit
I had to download a piece of software today for one of the servers which I haven't used in a while. A question of confirming the 64bit CPU capability came up, and I realized that I never mentioned it...
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Ubuntu SSH: How To Enable Secure Shell in Ubuntu
SSH (Secure SHell) is possibly the best way to remotely access a Unix system – it's very secure thanks to automatic encryption of all the traffic, and it's also quite universal because you can do all...
View ArticleHow To Disable IPv6 in Red Hat Linux
Since it may be a while before I'm ready to use the IPv6 on my systems, I've been disabling IPv6 on most servers so far. And since there's a particularly elegant way of doing this in Red Hat Linux, I...
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Upgrading Ubuntu with do-release-upgrade
There comes a time (a couple of times a year, actually) when you may want to upgrade your Ubuntu distro (read here for instructions on confirming your version of Linux: Find Out Linux Version) Once...
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Passwordless SSH with encrypted homedir in Ubuntu
Quite recently I came across a very interesting issue: while configuring passwordless SSH (it's public key based, so depending on you have it configured it may not be completely passwordless) access to...
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Using Dropbox with Unix
Although last week saw some pretty exciting developments in the cloud storage (Google Drive announcement and SkyDrive free 25Gb space), the truth is that Dropbox is still the king of the cloud storage...
View ArticleAre you a CentOS user? Will you switch to Oracle Linux?
Have recently found out that Oracle Linux is now completely free to get and to use, meaning that you'll only have to pay for commercial support should you decide you need it. Oracle has even gone as...
View ArticleQuestionnaire for my upcoming Linux Administration ebook
If you're planning to acquire or expand Linux System Administration skills anytime soon, you may find my upcoming Linux Pro: How To Make a Great Career in Systems Administration ebook really useful....
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How to Use visudo
The visudo command is a safe and secure way of editing the /etc/sudoers file on UNIX and Linux systems. Since the sudoers file determines which users can run administrative tasks, those requiring...
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How to Find Directories Larger Than 1GB in Linux
Finding out sizes of files and directories in Linux is done using the du command, which estimates their disk space usage. The du command can be used with options that allow you to customize the results...
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Linux pause process
Linux allows you to pause a running process rather than quitting or killing it. Pausing a process just suspends all of its operation so it stops using any of your processor power even while it still...
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Ubuntu rar
RAR is a popular proprietary file format and software for compressing and archiving files, known for its ability to span multiple RAR files into a single archive, which is useful for compressing,...
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7zip ubuntu
7zip is a versatile open source file archiver that uses the high compression 7z archive format, but also supports many others including ZIP, GZIP, BZIP2, TAR, WIM, XZ for both packing and unpacking,...
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How to install unrar in linux
The unrar program, which serves to open and extract popular .rar archives, is often available for install from repositories of a given Linux distribution. That should make installing it easy by using...
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How to use dpkg to compare two Linux servers
While we mainly install, remove, update and otherwise manage software on Debian and Ubuntu based systems using apt-get, the lower level packaging system that apt-get actually relies on is dpkg. You can...
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How to update grub boot loader config
GRUB boot loader starts up what's necessary for your Linux or UNIX system to boot up. You can edit its settings, like various boot options and which operating systems to select from, by editing the the...
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How to Change tmux Meta Key to a Better One
The tmux tool, or the terminal multiplexer, is great for allowing you to run multiple terminals side by side. What's even better is that you can somewhat customize its behavior using the tmux.conf...
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Enable Text Console Support in Ubuntu
There are three ways to access the command line interface in Ubuntu, as on any Linux and UNIX distribution. One is launching the terminal emulator program within the graphical user interface. The other...
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