"grep" command in linux can be used to search text in files. We can further tune this command to search text in certain file types only. Let see how to do it.
we can stop,start or restart mysql by simply passing parameters to mysqld process. mysqld is the main program that does the most of the work in mysql.
curl is a command line tool which is used to transfer data. It supports almost all major protocols such as ftp, http, https etc. We can use this command to make POST request to a webpage, In fact we have more than one way to make a post request using curl command.
wget is a very handful utility to download files over the internet. It can handle most of the scenarios like background download,multiple downloads,non interactive downloads etc.
wget command useful to download files. Sometimes we needed to write wget output to file which can be verified later if there is any issues in downloading that file.
mysqldump is a database backup program used to create copy of database or collection databases. When you run mysqldump, it will prompt you for password, on valid password it will create backup copy of the database in given path.