fruits=("blueberry" "peach" "mango" "pineapple" "papaya") for n in ${fruits[2]}; do echo $n done C语音风格Bash循环 你可以在循环内使用变量来迭代一系列元素。这就是C语言风格Loop的用武之地。以下示例说明了这一点,它打印出从1到 7的数值列表。 #!/bin/bash n=7 for (( n
转自:linux按行读取 (while read line与for-loop) 在linux下一般用while read line与for循环按行读取文件。现有如下test.txt文件: 1. while read line whileread line;doecho $line done< test.txt 输出结果与上图一致。 这里也可以写为: cat test.txt |whileread line;doecho $line done 输出结果一致,但...
#!/bin/bash for i in {1..5} do echo "Welcome $i times" done This is from Bash For Loop Examples In Linux Bash v4.0+ has inbuilt support for setting up a step value using {START..END..INCREMENT} syntax: 代码语言:txt AI代码解释 #!/bin/bash echo "Bash version ${BASH_VERSION}....
InBashscripting, there are 3 types ofloops:for loop,while loop, anduntil loop. The three are used to iterate over a list of values and perform a given set of commands. In this guide, we will focus on theBash For Loopin Linux. Bash For Loop Syntax As mentioned earlier, thefor loopit...
linux按行读取 (while read line与for-loop) 1. while read line 代码语言:javascript 代码运行次数:0 运行 AI代码解释 whileread line;doecho $line done<test.txt 输出结果与上图一致。 这里也可以写为: 代码语言:javascript 代码运行次数:0 运行
在linux下一般用while read line与for循环按行读取文件。现有如下test.txt文件: 1. while read line whileread line;doecho $line done<test.txt 1. 2. 3. 复制 输出结果与上图一致。 这里也可以写为: cat test.txt|whileread line;doecho $line ...
There might be other ways to get this done, but remember, this is just an example of things youcando with aforloop. What if you have a mountain of files named something likeFILE002.txt, and you want to replaceFILEwith something likeTEXT. Remember that in addition to Bash itself, you ...
for循环是 Linux shell 脚本中的一个基本控制结构,用于重复执行一系列命令,直到满足某个条件。for循环在处理文件列表、数组、序列以及其他需要重复执行任务的场景中非常有用。 基本语法 代码语言:txt 复制 for variable in list do command1 command2 ... commandN done ...
在Linux / UNIX操作系统下,如何使用bash for loop重复执行某些任务? 如何使用for语句设置无限循环? 如何使用三参数进行循环控制表达式? “ for循环”是bash编程语言的语句,它允许重复执行代码。 for循环被归类为迭代语句,即bash脚本中进程的重复。 例如,您可以运行UNIX命令或任务5次,或使用for循环读取和处理文件列表。
In Python, “for-loop” is widely used to iterate over a sequence, list, or any object. For loop avoids multiple usages of code lines to make the program concise and simple. The “One line for loop” is also the form of “for loop” which means that a complete syntax of “for loop...