A list of strings or array or sequence of elements can be iterated by using for loop in bash. How you can iterate the list of strings in Bash by for loop is shown in this tutorial by using various bash script examples. If you are novice is bash programming then you can read the ...
Loop over strings The example below shows a loop that iterates over a list of strings. The loop operates on each item in the list, and the variableelementstores the item that the loop is currently operating on. forelement in Hydrogen Helium Lithium Berylliumdoecho"Element:$element"done ...
Some useful BASH for loop examples has been mentioned in this article. Syntax of for loop: # loop through a list for value in list do commands done # loop specified values for value in file1 file2 file3 do commands done # loop through strings resulting from a command for value in $(...
The for loop allows you to specify a list of values. A group of statements is executed for each value in the list. For loop syntax The for loop in the shell takes a list of words (strings) as an argument. The number of words in the list determines the number of times the statements...
Over Strings Now let's look at standard Bash for Loop over Strings. For instance, in the below example, the loop will repeat each item in the list of strings and variable element fixed to the current item. for element in Gold Silver Diamond Platinum do echo "Element: $element" Done Over...
Alternatively, use strings in a space separated list: #!/bin/bash # For loop with individual strings for i in "zero" "one" "two" "three" "four" "five" do echo "Element $i" done Save the script and run from the terminal to see the result. ...
From the previous section, you might have understood that thefor loopaccepts a list of items. The list of items can be anything like strings, arrays, integers, ranges, command output, etc. Open the terminal and run the following piece of code. ...
我想编写一个循环遍历 15 个字符串的脚本(可能是数组?)这可能吗? 就像是: for databaseName in listOfNames then # Do something end arrays bash shell unix 答案你可以像这样使用它: ## declare an array variable declare -a arr=("element1" "element2" "element3") ## now loop through the ...
shell 提供了三种类型的循环:while、until和for。前两个执行,直到条件为真或假;第三个循环遍历一个值列表。 正在… while循环 的条件是一个或多个命令的列表,条件为真时要执行的命令放在关键字do和done之间: while <list> do <list> done 通过在每次执行循环时增加一个变量,命令可以运行特定的次数: n=1 ...
Bash loops are convenient. In this portion, we'll look at the numerous loop types available to us and explore when and why you may want to utilize each of them.