The loop structure is one of the key components of every programming language including Bash. They are used to repeat the specified instructions against a condition. Frequently employed loop structures in Bash
Conditional while loop exit with break statement You can do early exit with the break statement inside the whil loop. You can exit from within a WHILE using break. General break statement inside the while loop is as follows: while[condition]dostatements1#Executedaslongascondition istrueand/or,...
Conditional while loop exit with break statement You can do early exit with the break statement inside the whil loop. You can exit from within a WHILE using break. General break statement inside the while loop is as follows: while [ condition ] do statements1 #Executed as long as condition ...
Loops are one of the fundamental concepts of programming languages. This tutorial covers the basics of while loops in Bash.
You can create an infinite While loop with the following command: You can use the built-in ":"or "true" commands that always returns “True” or any other conditional statement. Here’s the one-line expression: Example 2: a loop with a fixed number of repeats ...
A while loop in bash consists of a conditional expression and a loop body which is surrounded by do and done. The loop body continues to be executed as long as the condition evaluates to true. The conditional expression in while loop can be surrounded by either a pair of single square ...
Example-2: Using break statement for conditional exit the break statement is used to exit from the loop early based on a particular condition. Create a bash file named while2.sh with the following code. Here, the loop is defined to iterate 10 times, but the iteration will be stopped when...
We began with the basics, understanding how to use a ‘for’ loop to iterate through an array in Bash. We then ventured into more complex territory, discussing nested loops, loops with conditional statements, and how to use ‘while’ and ‘until’ loops to iterate through arrays. We also ...
# Endless loop example with an endless counter increment [me@linux ~]$ for (( x=0 ; ; x++ )); do echo "\$x=$x"; done $x=0 $x=1 $x=2 ... The While loop The bash while-loop construct can be used to create a condition-controlled loop using a bash conditional expression,...
We can use the cat command with a while loop to read a file in Bash. Here is an example of how to read a file using the cat command in Bash ? #!/bin/bash filename="sample.txt" cat "$filename" | while read line do echo $line done In the above example, we define the file...