Recently I started writing SQL query for analyzing and debugging the production code. But I was surprised to see that some queries takes longer time to execute to achieve the same output. I did research and found some interesting stuff about how to debug the SQL query. I have a very simple table who’s definition […]

Basic commands cp <source-file>  <destination-file> Copies the file scp <source-file> <destination-file> Copies file from one host machine to another host machine. mv <source-file> <destination-file> Moves the file/folder from one place to other. touch <file> Creates the file mkdir <directory-name> Creates the directory. If you want to create a chain of parent and child directory you […]