Sometimes you may required to write for append mutiple lines to a file. You can use multiple methods to write multiple lines to a file. Option 1:- You can write/append content line by line using echo command. $ echo "line 1 content" >> myfile.txt $ echo "line 2 content" >> myfile.txt Option 2:- You...
Question- How to POST JSON data with curl? How to POST JSON data with curl command line? How do I POST JSON data on Linux terminal? You can add -H "Content-Type: application/json" header value to Post the JSON data to curl command line. For example, I have an API URL http://api.example.com/v2/login, that is used...
How do I create a directory on Linux/Unix? How do I create a directory with specific permissions? Creating directory structure using Linux mkdir command? Examples of mkdir command. Linux/Unix mkdir or “make directory” command is used for creating directories/folders on the filesystem. This is a simple and frequently used Linux command. Every system admin...
The Linux cd command, cd stands for change directory is a Linux command line utility for navigating to file system. The Linux cd command is a basic command but most frequently used command Linux system. While navigating through the directory structure you should clear about uses of the absolute path and relative path in...
The grep is the best command line tool for searching text in files. It also used for the searching files containing specific files recursively. Grep has multiple command line options to make this tool great. Generally, all the system administrator must use these commands daily in there working. In this tutorial, you will know,...
The latest Google Chrome 59 has included a new feature headless which provides functionality to run Google Chrome without UI. This allows users to use Google Chrome on the command line as well as scripts. This headless Google Chrome version also included the feature to create a PDF of any website using command line...
The latest Google Chrome 59 has included a new feature headless which provides functionality to run Google Chrome without UI. This allows users to use Google Chrome on the command line as well as scripts. This headless Google Chrome version also included the feature to capture a screenshot of any website using command line...
An archive file is a file composed of one or more files in compressed format. It’s useful for saving disk storage, managing a single file is easier than managing multiple files. This tutorial will help you to decompress or extract archive file Linux system. How to Extract .zip File: This is the most common...
Sometimes we upgrades packages accidentally which is not to update. It also happens during the full update or automatic packages upgrade process. This creates serious issues on the server. For example, You need to exclude kernel, PHP, MySQL and Apache packages from getting updated while updating system via apt update. This tutorial will help...
How to Find all files Containing Specific Text on Linux. This tutorial will help you to search all files containing specific string recursively. This tutorial uses “grep” command to search string in files. Alternatively, You can also use find command to search text. Command Syntax:- grep -rwl “search-string” /path/to/serch/dir 1. Search Single String in...
