在bash命令行上使用for循环可以通过以下步骤实现: 1. 打开终端或命令行界面,进入bash环境。 2. 使用以下语法来编写for循环: ``` for 变量名 in 值列表 ...
declare -a string_array=("Hello world!" "How are you?" "Nice to meet you!" "How do you do?" ) # Read the array values with space for str in "${string_array[@]}"; do echo $str done 如何SSH到另一台主机并在其上运行几个命令? #!/bin/bash # 先配置SSH的免密,之后执行此脚本 ...
In a bash loop, a shell variable’s common usage is to store multiple strings. It is useful for running tasks in bulk, like renaming files or installing a package. Here’s the syntax: variable="string1 string2 string3" for item in $variable do command1 command2 command3 done ...
while ...; do ... done while-loop 将运行直到表达式测试为真。will run while theexpression that we test for is true. 关键字"break" 用来跳出循环。 而关键字”continue”用来不执行余下的部分而直接跳到下一个循环。 for-loop表达式查看一个字符串列表 (字符串用空格分隔) 然后将 其赋给一个变量: ...
for循环 循环结构 原创 故事最后怎么了 2024-04-16 10:13:14 119阅读 bash脚本:while循环 while CONDITION; do statement ...done例如: 1.写一个脚本,输入任何字符,小写转换为大写。输入quit退出。 #!/bin/bashread -p "Input Something" STRING while [ $STRING != 'quit' ]; do echo $STRING|tr '...
递归遍历如下:将已知路径和列表数组作为参数传递, public void Director(string dir,List list) { DirectoryInfo d...d.GetDirectories();//文件夹 foreach (FileInfo f in files) { list.Add(f.Name);//添加文件名到列表中...} //获取子文件夹内的文件列表,递归遍历 foreach (DirectoryInfo dd ...
您也可以在shell中使用如下的loop表达式: while ...; do ... done while-loop 将运行直到表达式测试为真。will run while theexpression that we test for is true. 关键字"break" 用来跳出循环。 而关键字”continue”用来不执行余下的部分而直接跳到下一个循环。 for...
Inside the loop, the user is prompted to enter their name. If the user inputs 'quit', the loop exits. Otherwise, it greets the user with their name. 5. Write a Bash script that utilizes a for loop to iterate through a list of files in the current directory and print each filename...
Let’s look at a simple example of a ‘for’ loop acting as a ‘foreach’ loop: forfruitinApple Banana Cherry;doecho"I love$fruit";done# Output:# I love Apple# I love Banana# I love Cherry Bash Copy In this example, the ‘for’ loop iterates over the list of fruits (Apple, ...
If you’re making Bash programs for you or for others to use one way you can get user input is to specify arguments for users to provide to your program, as we discussed in the previous section. You could also ask users to type in a string on the command line by temporarily stopping...