Shell scripting, specifically Bash scripting, is a great way to automate repetitive or tedious tasks on your systems. Why type when you can schedule and run scripts in a hands-free manner? One of the many scripting constructs is the loop. A loop is a section of code that picks up data ...
The while loop is one of the fundamental flow control components of programming. In shell scripting, the loop is used for various purposes such as finding the number of items in a directory and the number of lines in a file. Further, the infinite while loop is used for testing and debuggi...
As long as thewhileloop condition remains true, the code block within the loop is executed repeatedly.In contrast, the loop terminates if the condition evaluates to false. 3. Including User Input Into awhileLoop Condition In shell scripting, using user input as a condition for awhileloop adds...
Example 1: Infinite While loop in a shell script An infinite While loop means your script will run the loop commands non-stop. Infinite While loops never stop running and this occurs when the condition always turns out to be “True.” ...
else: print("no,please input") 3、限制输入三次，超过三次，最近忽然发现，自己shell 中的循环...
While Loop #!/bin/bash var=1 total=0 while [ $var -lt 101 ]; do total=$((total + var)) var=$((var+1)) done echo sum is $total 注意: 1.“=”两边一定不能有空格 2. 上面
We can use awhileloop to improve the read-menu program from the previous chapter: 我们可以使用一个 while 循环,来提高前面章节的 read-menu 程序: 代码语言:javascript 代码运行次数:0 运行 AI代码解释 #!/bin/bash#while-menu:a menu driven system information programDELAY=3# Numberofseconds to display...
We can use awhileloop to improve the read-menu program from the previous chapter: 我们可以使用一个 while 循环,来提高前面章节的 read-menu 程序: #!/bin/bash # while-menu: a menu driven system information program DELAY=3 # Number of seconds to display results ...
In this version of the script, we set up an endless loop (one that never terminates on itsown) by using the true command to supply an exit status to while. Since true willalways exit with a exit status of zero, the loop will never end. This is a surprisinglycommon scripting technique...
I am trying to create a CUI like application in powershell script. Like showing around 7 options each mapped to a numeral character. A prompt is presented and the admin can type the ...