递归遍历如下:将已知路径和列表数组作为参数传递, public void Director(string dir,List list) { DirectoryInfo d...d.GetDirectories();//文件夹 foreach (FileInfo f in files) { list.Add(f.Name);//添加文件名到列表中...} //获取子文件夹内的文件列表,
The example shows how to exit an infiniteforloop using abreak. TheBash if statementhelps check the value for each integer and provides thebreakcondition. This terminates the script when an integer reaches the value ten. To exit a nested loop and an outer loop, usebreak 2. Continue Thecontin...
不是所有的 shell 都是 Bash 关键字 for 是内置在 Bash shell 中的。...许多类似的 shell 会使用和 Bash 同样的关键字和语法,但是也有某些 shell ,比如 tcsh,使用不同的关键字,例如 foreach。...tcsh 的语法与 Bash 类似,但是它更为严格。例如在下面的例子中,不要在你的终端的第 2、3 行键入 foreach...
In this article, we will cover the basics of for loops in Bash and show you how to use the break and continue statements to alter the flow of a loop.
foriin{1..5};doecho$i;done# Output:# 1# 2# 3# 4# 5 Bash Copy In this example, we’ve created a ‘for’ loop that acts as a ‘foreach’ loop. The loop iterates over the numbers 1 through 5, echoing each number on a new line. This is a basic way to use the ‘foreach...
Instead of listing the for-in loop items, use an array to make your code more organized and easily readable. It simplifies iterating through data – the process of applying the loop for each item individually. Declare the array with its item at the beginning and add it to your for-in ex...
Before the first iteration, expr1 is evaluated. This is usually used to initialize variables for the loop. All the statements between do and done are executed repeatedly until the value of expr2 is TRUE. After each iteration of the loop, expr3 is evaluated. This is usually used to incremen...
for i in 1 2 3 4 5 do echo "Hy $i" done Once you execute the above set of instructions, the results you will get will be something like: Hy 1 Hy 2 Hy 3 Hy 4 Hy 5 #!/bin/bash– It verifies that the following code is a part of Bash coding. Now let’s break each element...
v ## The loop calls getopts until there are no more options on the command line ## Each option is stored in $opt, any option arguments are stored in OPTARG while getopts $optstring opt do case $opt in f) filename=$OPTARG ;; ## $OPTARG contains the argument to the option v) ...
Bash while Loop Iterate through an Array An array stores multiple elements of the same data type. Loop structures serve as a fundamental tool for iterating through arrays and performing operations on each of their elements. For example, let’s create a Bash script that has an array of 5 ele...