Example 1: Run the Parallel Jobs Using the “For” Loop Using the “for” loop is the simpler way to perform the parallel jobs in the Bash script. Create a Bash file with the following script that runs the “for” loop 10000 times and print a number after the iteration of 1000 times....
当我们用编程语言编写一个forloop时,我们正在构建一个迭代的命令式:我们要求计算机首先完成一个工作,然后循环到最后。但通过GNU Parallel编写命令时,我们遵循所谓的描述性功能编程。就是,我们尝试用模式描述我们想要的内容,然后让计算机填写该模式并输入完整命令。 GNU Parallel的极简介绍 GNU Parallel 是一个非常好用文...
for((i=0;i<10;i++))do func & done wait 当然,这里并行的次数不能太多,否则机器会卡死。稍微正确的做法比较复杂,以后再讨论,如果图省事可以使用parallel命令来做,或者是用上面提到的xargs来处理。 全文本检索 我们知道,当我们想在文件夹下所有的txt文件中检索某一个字符串(比如233)的时候,我们可能会用类...
for loop with path # example 1 cd test/data for file in * do # do whatever on $i done # example 2 for file in test/data/* do # do whatever on $i done for loop array for i in "${arrayName[@]}" do # do whatever on $i done parallel (async) for loop test(){ sample="...
没有覆盖。如果您只是添加等待以使作业正常工作，而不是压倒系统，那么就不要费心将其放入后台。
最简单的情况，只使用示例。没有覆盖。如果您只是添加等待以使作业正常工作，而不是压倒系统，那么就不...
If you get nvm: command not found after running the install script, one of the following might be the reason:Since macOS 10.15, the default shell is zsh and nvm will look for .zshrc to update, none is installed by default. Create one with touch ~/.zshrc and run the install script ...
使用GNU Parallel工具:GNU Parallel是一个命令行工具,可以并行执行多个命令或脚本。它可以将多个脚本作为参数传递,并在派生的子进程中异步运行。例如: 代码语言:txt 复制 parallel ::: "./script1.sh" "./script2.sh" 这样,script1.sh和script2.sh将在派生的子进程中同时异步运行。 以上方法都可以实现多...
The wait command is typically used in shell scripts that spawn child processes that execute in parallel. To illustrate how the command works, let’s create the following script: #!/bin/bashsleep30&process_id=$!echo"PID:$process_id"wait$process_idecho"Exit status:$?" ...
forSCRIPT in /path/to/scripts/dir/*doif[-f"$SCRIPT"-a -x"$SCRIPT"]then$SCRIPTfidone Discussion We discuss theforloop and theifstatement in greater detail inChapter 6, but this gives you a taste. The variable$SCRIPTwill take on successive values for each file that matches the wildcard...