The syntax of the while loop Multiple examples of the while loop So let's start with the first one. How to use the while loop in bash Like any other loop, while loop does have a condition statement and the condition is the crucial factor to iterate the loop. See, whenever you start ...
Three types of loops are used in bash programming. While loop is one of them. Like other loops, a while loop is used to do repetitive tasks. This article shows how you can use a while loop in a bash script by using different examples. Syntax of while loop: while [ condition ] ...
The infinite loops are used for many purposes in Bash scripting, such as testing, debugging, event handling, and managing background processes. The while loop stands as one of the crucial loop structures, often employed to construct infinite loops. The syntax of the while infinite loop is given...
Bash While loop example A While loop in a Bash script will trigger a series of commands to run repeatedly for as long as the condition result is “True.” Below is an example of Bash While loop syntax. Example: Explicit example: One-line While loop example: The code above will instruct ...
Let’s break downwhile loopsyntax. while loopshould start with a while keyword followed by a condition. Aconditionshould be enclosed within[ ]or[[ ]]. The condition should always return true for the loop to be executed. The actual block of code will be placed betweendoanddone. ...
Bash Until Loop The until statement is very similar in syntax and function to the while statement. The only real difference between the two is that the until statement executes its code block while its conditional expression is false, and the while statement executes its code block while its co...
/bin/bash echo "Simple for loop example:" for number in {1..5}; do echo "Number: $number" done We use the simple shellforloop to iterate over a list and print each of the numbers. Notably, this loop type has a fairly simple syntax, making it easy to use for basic iteration ...
Bash support in the file if you have named it with the “.sh” extension or run it with the keyword “bash”. As we have to use the one-line “while” loop in the code, we are fulfilling our promise here. The while loop started with the keyword “true” states that the loop ...
The while loop is another popular and intuitive loop you can use in bash scripts. The general syntax for abash while loopis as follows: while [ condition ]; do [COMMANDS] done For example, the following3x10.shscript uses a while loop that will print the first ten multiples of the number...
bashwhile-loopscopesh 279 在下面的程序中,如果我在第一个`if`语句内将变量$foo设置为值1,那么它的值会被记住并保留在`if`语句之后。然而,当我在一个`while`语句内的`if`内将同一变量设置为值2时,它会在`while`循环后被遗忘。它的行为就像我在`while`循环内使用了某种变量$foo的副本,并且我只修改了该...