text pulled from a file, the output of another Bash command, or parameters passed via the command line. Converting this loop structure into a Bash script is also trivial. In this article, we show you some examples of how aforloop can make you look like...
You can have awhileloop to keep checking for that directory's existence and only write a message while the directory does not exist. If you want to do something more elaborate, you could create a script and show a more clear indication that the loop condition became true: #!/bin/bashwhil...
/bin/bashecho'Hello Bash World' for loop in one line 一行实现循环调用 foriin{1..5};doCOMMAND1-HERE&&COMMAND2-HERE;done 定义function 你可以用function 函数名{} 或者 直接函数名 #!/bin/bash#usage(){functionusage(){echo"sleep seconds"}if[$#== 1 ];thengetSomeSleep$1elseusagefi 逻辑表达...
Linux Bash Script loop shell 编程之流程控制 for 循环、while 循环和 until 循环 for var in item1 item2 ... itemN do command1 command2 ... commandN done 1. 2. 3. 4. 5. 6. 7. for var in item1 item2 ... itemN; do command1; command2… done; 1....
Linux Bash Script loop syntax All In Oneshell 编程之流程控制 for 循环、while 循环和 until 循环forfor var in item1 item2 ... itemN do command1 command2 ... commandN done for var in item1 item2 ... itemN; do command1; command2… done; while...
#!/bin/bash while true do if [ `date +%H` -ge 17 ]; then exit # exit script fi echo keep running ~/bin/process_data # do some work done 如果要退出循环而不是退出脚本,请使用 break 命令而不是 exit。 #!/bin/bash while true do if [ `date +%H` -ge 17 ]; then break # exit...
如何在Linux的bash中永远循环 在Linux 中有很多永远循环(或直到你决定停止)的方法,你可以在命令行或脚本中执行此操作。 在Linux 中有很多永远循环(或直到你决定停止)的方法,你可以在命令行或脚本中执行此操作。 for和while命令使这件事非常容易。关于相应的语法和策略,只有几件事要牢记。
[root@www shell-script]# cat c_for02.sh#!/bin/bashfor((i=1,j=100;i<=10;i++,j--))doecho"i=$ij=$j"done 1. 2. 3. 4. 5. 6. for的无限循环 #!/bin/bashfor((i=0;i<1;i+=0))doecho"infinite loop"done 1. 2.
fruit=orange; and on the third and final iteration,fruit=pear. Once it has completed the loop, the script continues normal execution with the next command after thedonestatement. In this case, it ends by saying “Let’s make a salad!” to show that it has ended the loop, but not the...
1、请创建script ,当你运行该 script 的时候,该 script 可以显示: 1. 你目前的身份 (用 whoami ) 2. 你目前所在的目录 (用 pwd) #!/bin/bash echo -e "Your name is ==> $(whoami)" echo -e "The current directory is ==> $(pwd)" ...