bash while loop with yes or no . Hardware and Software Forum . I am running an Ubuntu Gutsy laptop with Advanced Compiz fusion options enabled. Sytnax while less than shell script. . ; The select command also appears in the examples, even though it is not a primary loop construct. Bash While And Until Loop Explained With Examples - OSTechNix The while loop is used to performs a given set of commands an unknown number of times as long as the given condition evaluates to true. 29. On every loop iteration, the script will print the value of the number. 3. For my own reasons in ths script i have disabled the CTRL C using the trap command. There are 3 basic loop structures in Bash scripting which we'll look at below. It means the loop will execute the commands repeatedly until the condition remains true. This answer is not useful. #!/bin/bash while true do if [ `date +%H` -ge 17 ]; then . Bash while loop to run command for specific time with examples Bash continue: How to Resume a Loop - Knowledge Base by phoenixNAP The ability to automate tasks with Bash scripts in Linux is one of the operating system's most powerful components. There are 3 basic loop constructs in Bash scripting, for loop, while loop, and until loop. The statement functions as a loop, and the continue statement works for any looping command. Discussion / Question . This example code will prompt for confirming once if you give wrong input, the program will exit with status 1. There are other ways to implement a loop in Bash, see how you can write a for loop in Bash. The while loop in a Linux Bash script is a type of loop that continues to execute as long as the programmed condition remains true. bash - How to check if a value is greater than or equal to another ... There are also a few statements which we can use to control the loops operation. Head Command. If you're using Linux, you may want to use a command like inotifywait, which makes the while loop much simpler: Here's an example: . A read-while loop is a variation of the above, but is safer for reading lines from a file: . the if not Condition in the Case of Integers in Bash ; the if not Condition in Case of Strings in Bash ; Bash if not Condition in the Expression ; In bash, if the code of the command list is true, then if | then statements execute one or more commands after the word then.If the check returns false, it executes else, if the condition requires it. The way in which this Bash script works is simple; it starts with the while command to check if the number is greater than zero, then it'll run the loop, and the number value will be decreased every time by 1.