/bin/bashwhile! bash -n$1&>/dev/null ;doread-p"Scripts syntax error,Please input any key edit scripts or q|Q quit: "SCRIPTcase$SCRIPTinq|Q)echo"quit edit..."exit8 ;; *) vim$1;;esacdone检查脚本,脚本语法错误时将进入循环;当输入q或者Q时,退出脚本;当输入任意键则vim编辑脚本,脚本修改...
PowerShell复制 while($val-ne3) {$val++Write-Host$val} 在此示例中,条件 ($val不等于 3) 为 true,而$val等于 0、1 和 2。 每次通过 循环时,$val使用++一元递增运算符递增 1。 最后一次循环$val设置为 3,条件语句的计算结果为 false,循环退出。
使用napi_run_script_path接口执行包内abc文件的使用限制 如何通过C接口使用网络相关功能 如何实现ArkTS与C/C++的HashMap转换 napi_call_function调用时除了会有pending exception外,是否还有其他异常场景 在HSP/HAR包中支持导出C/C++的Native方法吗?如果不支持,替代方案是什么 多so相互依赖场景下如何解耦 如...
Python Syntax whileTrue:ifcondition_1:break...ifcondition_2:break...ifcondition_n:break This syntax works well when you have multiple reasons to end the loop. It’s often cleaner to break out from several different locations rather than try to specify all the termination conditions in the lo...
Syntax: while(condition) actions while is a keyword. condition is conditional expression actions are body of the while loop which can have one or more statement. If actions has more than one statement, it has to be enclosed with in the curly braces. ...
In this tutorial, we’ll take a look at using user input as awhileloop condition in the Linux shell. 2. UnderstandingwhileLoops Before we dive into using user input, let’s first discuss the concept and syntax of awhileloop: while [condition]; do ...
Bash while Loop Syntax The syntax of Bash while loop is as follows: while [condition] do commands_to_execute done The while loop is initiated with thewhile, succeeded by the condition enclosed withinthedoanddonekeywords. The script to printWelcome to Bash Scripting5 times using the while loop...
The syntax of the while loop Multiple examples of the while loop So let's start with the first one. How to use the while loop in bash Like any other loop, while loop does have a condition statement and the condition is the crucial factor to iterate the loop. ...
Let’s break downwhile loopsyntax. while loopshould start with a while keyword followed by a condition. Aconditionshould be enclosed within[ ]or[[ ]]. The condition should always return true for the loop to be executed. The actual block of code will be placed betweendoanddone. ...
Another iteration statement offered by the shell programming language is the while statement. Syntax: while expression do commands done In the above while loop syntax: while, do, done are keywords Expression is any expression which returns a scalar value ...