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Category Archives: Linux-Unix

The default editor that comes with the UNIX operating system is called vi (visual editor). Using vi editor, we can edit an existing file or… Read More
C compiler is pretty vague in many aspects of checking program correctness, particularly in type checking. Careful use of prototyping of functions can assist modern… Read More
Program to create four processes (1 parent and 3 children) where they terminates in a sequence as follows : (a) Parent process terminates at last… Read More
Ubuntu has finally released its new LTS version being 18.04. A short about ubuntu for a newbie ubuntu is linux distribution or basically it is… Read More
Linux operating system allows users to create commands and execute them over the command line. To create a command in Linux, the first step is… Read More
Every user in Unix like operating system is identified by a different integer number, this unique number is called as UserID.  There are three types… Read More
ls | wc command : Using ls|wc, we can count new lines, words and letters of all files of current directory. We can see from… Read More
Working and implementation of Pipe in Linux. Prerequisite : Pipe in Linux Approach : Pipe is highly used in Linux. Basically, pipe has 2 parts,… Read More
UDP is a connection less protocol. There is no connection is established between client and server. Creating Standard UDP Client/Server is discussed here Prerequisite :… Read More
Before we move to file globbing, let’s understand what are wildcard patterns, these are the patterns containing strings like ‘?’, ‘*’  File globbing is the… Read More
As we all know Linux is a multitasking and multi-user systems. So, it allows multiple processes to operate simultaneously without interfering with each other. Process… Read More
We have discussed some of the SED command options in Sed Command in Linux/Unix with examples  SED is used for finding, filtering, text substitution, replacement… Read More
The running instance of program is process, and each process needs space in RAM and CPU time to be executed, each process has its priority… Read More
Proc file system (procfs) is virtual file system created on fly when system boots and is dissolved at time of system shut down. It contains… Read More
The man page(manual page) is a documentation manual of different commands available in unix or unix like operating systems. To check manual entry for any… Read More

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