The break statement is surrounded in an if statement, which executes the body when the element is “script”. In the following Bash Script, we will write a For Loop containing break statement. break command breaks the loop that is immediate to the break statement. When the breaking condition evaluates to TRUE, then break statement is executed. 'elementN' )īREAKING_CONDITION decides when to break the for loop prematurely. The syntax of For Loop with break command, to break the for loop abruptly even before the for condition fails is #!/bin/bashĪrray=( 'element1' 'element2'. # get length of an array to a for loop to read all values and indexes In the following Bash Script, we will use For Loop to iterate over an Array using a counter variable.

The syntax of for loop might look similar to that of Java For Loop. Length of an array could be calculated using the the statements from do till done are could iterated based on a condition. The syntax of Bash For Loop to use a variable for counter to iterate over elements of an array is #!/bin/bashĪrray=( 'element1' 'element2'. When the above bash for loop example is run in Terminal, you will get the following in the output.ġ0 Bash For Loop – Use Counter to Iterate Over Elements of Array In the following Bash Script, we will use For Loop to iterate over a sequence of numbers. The element in the sequence, i is accessible during the iteration.

The syntax of Bash For loop to iterate over a sequence of numbers is #!/bin/bashįor loop is iterated for each element i in the sequence from m to n . When the above bash for loop example is run in Terminal, we will get the following output.Ĭharacters as word separators Bash For Loop – Iterate Over a Sequence We will use for loop to iterate over the elements in string separated by new line. In the following example, we will take a string with four lines. Note: Observe that the only difference between first type of for loop and this one is the double quotes around string variable. The syntax of Bash For Loop to consider each line in string as element is #!/bin/bashįor each line that is a line in str, statements from do till done are executed, and line could be accessed within the for loop for respective iteration. Separators Bash For Loop – Each Line in String as Element In the following example, we will take a string with words separated by white spaces, and iterate over the words using for loop. The syntax of Bash For loop to consider whitespaces in given string as word separators is #!/bin/bashįor each word in str the statements from do till done are executed, and word could be accessed within the for loop for respective iteration. Script Bash For Loop – Whitespaces in String as Word Separators When the above bash for loop example is run in Terminal, you will get the following output. # for loop that iterates over each element in arr In this For loop example, we will take an array of three strings, and iterate over the elements of array. 'elementN' )įor each element in arr the statements from do till done are executed, and each element could be accessed as i within the for loop for respective iteration. The syntax to loop or iterate over elements of an array using Bash For loop is #!/bin/bashĪrr=( 'element1' 'element2'. Bash For Loop – Iterate over Elements of Array

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