while : do echo "This is another infinite loop." sleep 1 done 在这两个例子中,true和:命令总是返回状态码0(表示成功),因此循环会无限进行下去。 说明如何安全地中断bash中的无限循环: 要安全地中断Bash中的无限循环,可以使用Ctrl+C组合键。这将发送一个中断信号给正在运行的脚本或命令,强制其停止执行。
In the above script, the user is asked to press theq/Qkey on the keyboard to exit the loop. The functionget_keyis getting the input from the user and comparing it. In the infinite while loop, first, theechostatement will execute after that, the function is called to monitor the input ...
Loops are an important building block in a shell script which allows to iterate over a section of code. The bash loop constructs include the for loop, while loop, and until loop. 👉 Sometimes, you may find references to a select loop in bash. It is not part of the bash loop ...
A 'for loop' is a bash programming language statement which allows code to be repeatedly executed. A for loop is classified as an iteration statement i.e. it is the repetition of a process within a bash script. Tutorial details For example, you can run UNIX command or task 5 times or ...
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.” ...
How can one set infinite loops? This article will help coders to understand the best way to use loops expression with basic to advance parameters. The for loop is often considered as an iteration statement whereby it is a way to repeat a process within a bash script. One can use the for...
如果你希望批量的对文件执行一些指令，构造一个可以重复运行在那些文件上的命令就是一种方法。在编程术语...
我用它来写电子邮件、新闻组文章、shell 脚本、PostScript 程序、网页等等。 文本编辑器对纯文本文件进行操作。它只存储您键入的字符;它没有添加任何隐藏的格式代码。如果我在文本编辑器中键入A并按回车键,然后保存它,文件将包含两个字符:一个和一个换行符。包含相同文本的文字处理文件要大几千倍。(带字 ,文件...
Commonly, bash's positional arguments are used to add information, context, or meaning to a shell script. WHILE Infinite Loop On its own, a WHILE loop will wait for a condition to exit with a 0 return code before running commands. However, a WHILE infinite loop runs indefinitely and never...
echo "Script arguments: $@" echo "First arg: $1. Second arg: $2." echo "Number of arguments: $#" Now let’s try running the script a few times in a few different ways: bashvars.sh ## Script arguments: ## First arg: . Second arg: . ...