Do you know that during the installation of a new kernel in Ubuntu, the old one is not deleted, but remains in the system? Over time, the number of old kernels increases and can take up quite a bit of the hard disk space. In some cases, autoremove can help (that is: sudo apt-get autoremove), it is intended to clean the system of unused packages, but it is not always effective with respect to kernel files. The autoremove command may not work for older kernels if you use the version of Ubuntu that is under development or the kernel you want to uninstall was… [Read More]
Linux
How to Shutdown Linux System from a Terminal
Through the SSH terminal, it is possible to shutdown your linux server by using the specific command. Eg:
1 | sudo shutdown -h now |
will immediately shut down the system. If you want to shut down the computer within a set time you will use:
1 | sudo shutdown -h +30 |
(to turn off the computer in thirty minutes) or
1 | sudo shutdown -h 3103180830 |
(to turn off the computer on 31-03-2018 at 08:30) Alternatively, it is also possible to use:
1 | sudo halt |
or
1 | sudo poweroff |
Rsync (Remote Sync): 11 Practical Examples of Rsync Command in Linux
What is Rsync? Rsync or Remote Sync is a utility for Unix/Linux systems used to copy or synchronize the files and folders remotely or locally. This article contains rsync examples that will help you to understand how to mirror, copy or synchronize the data from one server to another server and even locally in Linux/Unix systems. Rsync was created as a replacement for rcp and scp. Main Advantages The main advantages of rsync are: -Speed: Initially rsync replicates all content between source and destination (receiver). Further rsync only transmits the changed blocks or bits to the destination, which makes the synchronization… [Read More]
The Difference Between Ubuntu and Debian
What to choose for personal use? Debian or Ubuntu, it depends on your personal preferences, support for your hardware, your system setup skills, ease of use and other key questions. Debian and Ubuntu are the most influential distributions that ever existed. Of the 252 actively used distributions, 132 are based on Debian, including 67 on Ubuntu. Nevertheless, the use of both these distributions is very different. Therefore, making a choice of Ubuntu or Debian is not so easy. If you’ve ever asked what the difference is between Ubuntu and Debian, most will say that Ubuntu is targeting new users, and Debian is for experts. Such… [Read More]
Search for text in Linux files
Sometimes you may need to find a file that contains a specific string or find a line in the file where there is a word. In Linux, all this is done using one very simple yet powerful utility – grep. With it you can search not only the time limits in the files, but also filter the output of commands, and much more. In this tutorial, we’ll look at how text is searched for in linux files, detail the possible options for grep, and also give some examples of working with this utility. What is grep? The Grep command, (stands… [Read More]
How to Check Your Linux Distribution Name and Version
If you had Linux pre-installed when buying a laptop or a desktop, and you are interested in knowing Linux version and distribution name, this article is specially written for you to find out the Linux distro used in your laptop. There are several ways to find out the Linux version that you are using on your computer, as well as the name of your distribution and the kernel version, and additional information that you might want to keep in mind or at your fingertips. Therefore, in this simple but important guide for new Linux users, I’ll show you how. Doing this task… [Read More]