We have already described few shell scripts and this post explain simple if else and Elif statements with small example,

When you write shell script and you want to find the file name is already exist in specific directory we can found using simple IF condition,

This post describe how to find out whether the user name is exist in your system using shell script.

You may get an error, Please Set CMAKE_CXX_COMPILER to a Valid Compiler Path or Name Linux when you compile using cmake command.

You may get an error No ssl_certificate in NGINX even anything in the access logs when attempting HTTPS on browser,

Do you want to restart, stop, start or check the status IIS Service using command line can do same as Linux,

You may get an error, unpack could not create JAR file while installing JDK package in your system,