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Learn free linux-unix tutorials


Beginner Guide to sudo Command in Linux example

December 1, 2022 ·  2 min read

sudo is an abbreviation for superuser do. It is a Linux/Unix command used by system administrators to grant root privileges to a set of users for a specific command. It is only used at the command level. This blog, cover the `sudo usage examples and use cases. Sudo command not found Sometimes, the sudo command will not work and it gives a sudo command not found error in the console. To make this command work,...


Best 10 find command examples in Unix and Linux

December 1, 2022 ·  4 min read

In this tutorial, Learned frequently used top 10 find command examples in Unix/Linux OS. Best Find command examples in Linux and Unix:- find command is one of the frequent commands used in Linux and Unix operating systems. The find command helps search for specific files in a directory and its subdirectories. I use this command to search logs and java files on the Linux operating system as part of my java programming development....


Best 10 Simple examples of Grep Command in Linux Unix

December 1, 2022 ·  2 min read

Best10 Grep Command in Linux Grep is a popular and powerful command in Linux and Unix operating systems. Each developer and QA in software development need to know about grep command usage. Questions on Grep are asked by almost all interviews for the developer/QA role. Everyone in the Software field must know the Grep Usage and commands. Grep is used to search in a file or multiple files for matching keywords or lines....


Best examples of zgrep and zcat commands in Unix/Linux

December 1, 2022 ·  2 min read

In Linux and Unix, we have a grep command used to search for a given string in log and text files. Suppose you have uncompressed files like gzip, tar gz files, How do you search for a given word in those search files? Tomcat server stores the daily log files in tar.gz format. If you want to search for errors or strings in those files, We can use zgrep for search and zcat to view the files....


Clear command in Unix|Linux|windows with examples

December 1, 2022 ·  1 min read

In Unix, Operation System, You will run multiple commands in the terminal, and you want to clear the previous run commands on the terminal. clear commands work in the following operating systems Linux flavors Unix Mac Ubuntu Bash shell Clear command clears the content on a terminal in Linux and Unix. This command does not accept any arguments. Here is a syntax clear It clears the current screen commands and output and shows a new prompt...


cURL command line tutorials with examples

December 1, 2022 ·  3 min read

This tutorial shows the basics of cURL command-line tools cURL Installation on Linux/Unix and windows. CURL is a command-line tool used to send data between two machines. data can be transferred via HTTP or FTP protocols of any URL/file. cURL command is used to test API during the development phase. This tool is available in Windows, Linux, Unix, and Mac operating systems. Understanding cURL command Usage Retrieving Content from URL Testing REST API Upload/download files get Response and Location headers of any remote URL or websites cURL command install and configure on windows For developers, This is the basic and important command to test REST API in a console....


How to do remote ssh connection to openshift using putty?

December 1, 2022 ·  3 min read

Openshift is a platform as a server PAAS developed by Redhat company. Openshift is a cloud computing platform provider for managing application development using several languages like PHP and nodejs framework. In the current market, the cloud is a famous buzzword similar to amazon web services. OpenShift has different plans. You can choose a plan based on your requirement. Openshift provides a free plan which gives access to 3 small gears without a credit card....


Learn tar command with examples in linux or Unix

December 1, 2022 ·  2 min read

Tar command in UNIX:- Tar command is abbreviated as tape archive.tar is one of the most popular zipped/achieve commands in Unix like zipping in windows to compress the files and store all the files into a single file tar.gz. tar and gzip are more popular zipped archive commands in Linux or Unix like zipping, WinRAR, etc in windows. I have also blogged about Top 10 gzip examples in Linux,unix for gzip usage....


Linux and Unix PS command Examples

December 1, 2022 ·  4 min read

process status command Unix/Linux PS abbreviated as process status command list information about the active process running in the Linux/Unix machine. This command list out all the active running process of a shell. We will see frequently used ps command examples in the below sections. All these commands execute in the Linux/Unix command line ps command without arguments Ps command without arguments list out all the process of a current shell...


Linux/Unix - Top 6 cat command examples with tutorial

December 1, 2022 ·  3 min read

Basic Cat command examples in Linux/Unix Cat command is a simple command used by every Unix/Linux user. It is one of the most frequently used commands in Linux/Unix Systems. Cat command works on bash, PowerShell, and shell options. Cat command behaves differently based on the different types of usage. By using the cat command, we can do the following functionalities. 1. Read files using the cat command 2....


Top 10 gzip examples in Linux or unix

December 1, 2022 ·  3 min read

Gzip is abbreviated as GUN zip and it is one of the frequent commands used in Linux. gzip command is used to compress a file for reducing the size of the file. This will save bandwidth if the file is transferring between different systems. Moreover, the reduced size depends on the content of the file, if the content is text, it will reduce 60% and for the image, it should be 80%....


Top 10 ls command examples with tutorials in Linux/Unix

December 1, 2022 ·  3 min read

ls command Ls is one of the frequently used commands in Linux as well as UNIX and it is important to know about this command Ls command list the names of files or directories in a directory. ls command sort the files alphabetically and output to the standard console. when the ls command is executed, the Linux server does inode sorting and outputs the files alphabetically in Linux, files metadata is stored in a data structure that includes file owner, file access rights, and file type....


Top Yum command examples - linux tutorials

December 1, 2022 ·  2 min read

Yum abbreviated as Yellowdog Updater Modified a free tool for managing packages in RedHat Unix as well as CentOS. yum is a popular packaging tool to manage the different packages in Linux. Yum, do install, update, and remove the packages or RPMs in red hat and Cent OS Unix. yum is a similar apt-get tool in the ubuntu operating system. yum install the dependencies automatically yum download the temporary files and store them under the/var/cache/yum folder, Once the yum operation is finished, the data will be deleted....


Which command in Linux|Unix with examples

December 1, 2022 ·  2 min read

Which command is a frequently used command to find the location of executable files in Linux/Unix During application development, I can use this command to locate the tomcat location for log finding. In this tutorial, We are going to learn about which command and syntax and usage examples. Syntax which options [string array] This command accepts, options -a displays all pathnames of the given input string string is an input filename which compared and checked against PATH folder paths Returns the list of the path of filenames...


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