Over Strings Over a Number Range Over Array Elements Break and Continue for Loop Break Statement Continue Statement Examples of Bash for Loops In other words, Loops are easy and best to perform repetitive tasks. Its use is even more significant when working with scripting languages such as Bash...
To exit a nested loop and an outer loop, usebreak 2. Continue Thecontinuecommand ends the current loop iteration. The program continues the loop, starting with the following iteration. To illustrate, add the following code to a Bash script to see how thecontinuestatement works in aforloop: ...
# loop through strings resulting from a command for value in $(Linux command) do commands done # loop through increment or decrement numbers # traditional procedural for loop for (( i=0; i<10; i++) do commands done According to the above syntax, the starting and ending block of for...
Break statement with for loop From the above output, you can seefor loopiterates, and when the first leap year 2012 is found,breakstatement is read and the loop is exited and control is given back to the terminal. Now I am altering the same code for the"continue"statement. Thecontinuest...
“for” loop is mainly used when you want to work with a range in your script. You can define the start and end of the range. For instance, if you want to implement a shorter version of the earlier command to work with a range of 1 to 5, you could change the “for” loop ...
forfile in *\*;domv"$file""${file// /_}"done Copy Let’s break down the code line by line: The first line creates aforloop and iterates through a list of all files with a space in its name. The expression*\ *creates the list. ...
Bash while Loop String Comparison The string comparison can be a little tricky using the while loop. In the context of shell scripting the-eqare calledinteger comparison operators. So, these operators cannot be used to compare strings.
break 2 ## break out of both while and for loops elif [ $RANDOM -lt 10000 ] then printf '"' break ## break out of the while loop fi done done echo 继续 在循环内部, continue命令通过传递任何剩余命令,立即开始循环的新迭代: for n in {1..9} ## See Brace expansion in Chapter 4 ...
## declare an array variable declare -a arr=("element1" "element2" "element3") ## now loop through the above array for i in "${arr[@]}" do echo "$i" # or do whatever with individual element of the array done # You can access them using echo "${arr[0]}", "${arr[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.