Deleting Lines Containing Specific string from multiple files

Deleting Lines Containing Specific string from multiple files recursively Syntax: grep -Rl "STRING" /directory/path/ | xargs sed -i "/STRING/d" Example: Below example delete lines containing @license tag from src/main/php directory all files recursively grep -Rl "@license" src/main/php | xargs sed -i "/@license/d" Option Description: -R or --dereference-recursive For each directory…

How to Delete a Git branch

Delete a git branch Delete a local branch : Syntax: git branch -d<branch> git branch -d test-branch If you face any error like "error: The branch 'test-branch' is not fully merged" and you are still want to delete this branch then you can forcefully delete. Use 'git branch -D test-branch'…

Install Opencv in CentOS

Install opencv in CentOS Opencv can be install in CentOS in two ways: 1) Install from available yum repository. But till the time of writing this post repository are available. If you need latest version of opencv then go for 2. option. 2) Opencv installation from source. 1) Install opencv…

Install RPM in CentOS

Install RPM in CentOS RPM Package Manager (RPM), originally called the Red-hat Package Manager, is a program to install or uninstall software packages or libraries in Linux. To install RPM in CentOS, first download the RPM: $ wget now check in your directory will be available for installation. To install…

Run Mysql Query from Command Line

Shell script to run mysql query from command line without login into mysql command prompt.  You can use these shell script for quickly execution of MySQL query from a Linux Shell. Method 1: #!/bin/bash #Script to run mysql query from command line #Db Connection. DB_USER='root' DB_PASSWD='mypwd' DB_NAME='mydb' #Prepare sql query QUERY='select *…
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