The cron utility is one of the oldest components of a Linux system; it’s been around for decades (predating Linux itself), and its configuration format hasn’t changed much for many years. When something gets to be this old, it becomes fodder for replacement, and there are efforts underw...
The init program is a user-space program like any other program on the Linux system, and you’ll find it in /sbin along with many of the other system binaries. Its main purpose is to start and stop the essential service processes on the system, but newer versions have more responsibilitie...
Hence, the DNS cache streamlines the DNS lookup process and acts as an accelerator, improving your overall browsing experience. However, as we mentioned earlier, the DNS cache is a temporary stack of DNS records, and as such, it may expire or become corrupted. When that happens, you may ...
It is, of course, but Linux is a Unix flavor at heart. You’ll see the word Unix in this chapter more than Linux because you can take what you learn straight over to Solaris, BSD, and other Unix-flavored systems. I’ve attempted to avoid covering too many Linuxspecific user ...
Two other utilities for Linux, similar to top, offer an enhanced set of views and features: atop and htop. Most of the extra features are available from other utilities. For example, htop has many of abilities of the lsof command described in the next section. ...
There is already a .deb file uploaded in the official website of the Surfshark VPN client for Ubuntu and Debian Linux users. And for other Linux users, there are always terminal command lines available to install the VPN. To install the VPN on your Linux machine, download and update the ...
Login to the linux box and assume root 1 sudo su - Edit /etc/profile and add the following lines to the bottom of the file: 1 2 3 4 5 6 7 8 # command line audit logging function log2syslog { declare COMMAND COMMAND=$(fc -ln -0) logger -p local1.notice -t bash -i -...
As you can see, Linux has a complete solution for log file rotation. All you need to do is add a few lines of code to the existing framework, and your own log files can be rotated without any hassles! If you are one of ourmanaged VPS hostingclients, you can simply ask our system...
I have a text file with many lines of text. InLinux,how tosortthe lines by their length? You can make use ofawktogether with thesortprogram like awk'{ print length(),$0| "sort -n" }'/path/to/text/file Here, we useawkto calculate the text length andsort -nto sort by the length...
Linux commands wc and nl will help you to identify the number of words, lines, bytes, etc, in a file. This tutorial explains how to use these two very useful command with various examples. The basic text file that will be used in examples throughout this article is shown below : ...