if is a command in Linux which is used to execute commands based on conditions. The ‘if COMMANDS’ list is executed. If its status is zero, then the ‘then COMMANDS’ list is executed.

What is in if condition in Linux?

Syntax. This code is just a series of if statements, where each if is part of the else clause of the previous statement. Here statement(s) are executed based on the true condition, if none of the condition is true then else block is executed.

What is if [- E in bash?

The “if –e” and “if –s” are such operators in Bash, used for testing the existence of a file. The difference between the two is that the former only tests the existence of a file, whereas the latter also checks if there are any contents in that file or not.