Hopefully, these examples have demonstrated the power of aforloop at the Bash command line. You really can save a lot of time and perform tasks in a less error-prone way with loops. Just be careful. Your loops will do what you ask them to, even if you ask them to do something destr...
Basically, we’ll eliminate the newlines from the entire for loop code. We can also run these loops directly from the command line. Let’s compress the first example. If we eliminate all the new lines, the code will look like this. $ for i in {1..5}; do echo "number: $i"; ...
Loop command: against the results of another command.Syntax FOR /F ["options"] %%parameter IN ('command_to_process') DO command Key options: delims=xxx The delimiter character(s) default: a Space, TAB, comma, Equals or Semicolon. skip=n A number of lines to skip at the beginning. ...
Line 2: Marks the beginning of the for loop and iterate the variable n from 1 to 10. Line 4: Checks the value of n and if the variable is equal to 6, the script echoes a message to stdout and restarts the loop at the next iteration in line 2. Line 9: Prints the values to the...
If you need more controls on the result, use a "for" loop: Azure CLI #!/usr/bin/env bashfor vmList in $(az vm list--resource-groupMyResourceGroup--show-details--query"[?powerState=='VM running'].id"-outputtsv); do echo stopping$vmListaz vm stop--ids$vmListif [ $?-ne0]; ...
(end#)./Lwill execute the iterative by comparingstart#withend#. Ifstart#is less thanend#the command will execute. When the iterative variable exceedsend#the command shell exists the loop. You can also use a negativestep#to step through a range in decreasing values. For example, (1,1,5...
《Linux Command Line and Shell Scripting Bible》Part 13 更多的结构化命令(for while until) for命令 基本语法格式 for var in list do commands done 也可以写成 for var in list; do commands done 读取列表中的值 1 2 3 4 5 6 7 8 9
python wpt [command] Alternatively, you may also use Bash on Ubuntu on Windows in the Windows 10 Anniversary Update build, then access your windows partition from there to launch wpt commands. Please make sure git and your text editor do not automatically convert line endings, as it will caus...
Error running' xxxxxx': Command line is too long. Shorten command line for xxxxxxxxx,程序员大本营,技术文章内容聚合第一站。
嵌套循环( Nested Loop )其实就是多个for、while、until命令嵌套在一起 被嵌套的叫内部循环( Inner Loop ) 写一个简单的例子演示一下,如下图 image 13.6 循环处理文件数据 这个内容其实在上文中的13.1.5 更改字段分隔符小节中就有演示 这里写一个稍微复杂一点的升级版演示一下,如下图 ...