IF, ELSE or ELIF (known as else if in some programming) are conditional statements which are used for execution of different code depends on condition. The if statements can be written without else or elif statements, But else and elif can’t be used without else. In this tutorial, you will learn if, else and...
This is good to test a file has enough permission to do read, write or execute operations. For a good programmer, you should use these functions before doing any operations on the file. 1. Test read permission: Below script will check if the given file has read permission for currently logged in user. This...
Command: if [ “$str1” == “$str2” ] Example: Take input of two string in a script and compare if both are same or not, using if statement. Create a bash script using below content and execute. It will prompt for two strings from user and check if both string are same or not. #!/bin/bash...
IF, ELSE or ELIF (known as else if in other programming) are conditional statements which are used for execution of different-2 programmes depends on output true or false. All the if statements are started with then keyword and ends with fi keyword. To define conditions there are two ways, one is using test keyword...
While working with bash programming, we many times need to check if a file already exists, create new files, insert data in files. Also sometimes we required executing other scripts from other scripts. This article has few details about the test if file or directory exists in the system. Which can be very helpful...