bash 同时运行三个shell脚本
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Run three shell script simultaneously
提问by arsenal
I have three shell script which I am running as below-
我有我正在运行的三个 shell 脚本 -
sh -x script1.sh
sh -x script2.sh
sh -x script3.sh
So each script is executed sequentially one at a time after previous one finished executing.
因此，每个脚本在前一个脚本执行完毕后一次一个地依次执行。
Problem Statement:-
问题陈述：-
Is there any way I can execute all the three above scripts at same time from a single window?
I just want to execute script1, script2, script3 at the same time. If you think of some CRON JOB scheduling script1 at 3 AM, script2 at 3AM, script3 at 3AM(all three scripts at the same time, simultaneously). That's what I need, I need to execute all the three scripts simultaneously.
有什么办法可以在一个窗口中同时执行上述所有三个脚本？我只想同时执行script1、script2、script3。如果您想到一些 CRON JOB 调度script1 at 3 AM, script2 at 3AM, script3 at 3AM（同时、同时使用所有三个脚本）。这就是我需要的，我需要同时执行所有三个脚本。
回答by Rohan
you want this?
你要这个？
$ sh -x script1.sh & sh -x script2.sh & sh -x script3.sh &
Update explanation :
更新说明：
- Run each script in background mode so that next command is run without waiting for current command to complete.
'&'makes the scripts run in background so that prompt does not wait for it to complete'&'also can be used to chain commands on one line similar to running commands one by one on command line.
- 在后台模式下运行每个脚本，以便在不等待当前命令完成的情况下运行下一个命令。
'&'使脚本在后台运行，以便提示不会等待它完成'&'也可用于在一行上链接命令，类似于在命令行上一一运行命令。
回答by Ole Tange
With GNU Parallel you can do:
使用 GNU Parallel，您可以：
parallel sh -x ::: script1.sh script2.sh script3.sh
If the scripts are executable then you can even do:
如果脚本是可执行的，那么您甚至可以执行以下操作：
parallel ::: script1.sh script2.sh script3.sh
Watch the intro videos to learn more: https://www.youtube.com/playlist?list=PL284C9FF2488BC6D1
观看介绍视频以了解更多信息：https: //www.youtube.com/playlist?list=PL284C9FF2488BC6D1
10 seconds installation:
10秒安装：
$ (wget -O - pi.dk/3 || lynx -source pi.dk/3 || curl pi.dk/3/ || \
fetch -o - http://pi.dk/3 ) > install.sh
$ sha1sum install.sh | grep 3374ec53bacb199b245af2dda86df6c9
12345678 3374ec53 bacb199b 245af2dd a86df6c9
$ md5sum install.sh | grep 029a9ac06e8b5bc6052eac57b2c3c9ca
029a9ac0 6e8b5bc6 052eac57 b2c3c9ca
$ sha512sum install.sh | grep f517006d9897747bed8a4694b1acba1b
40f53af6 9e20dae5 713ba06c f517006d 9897747b ed8a4694 b1acba1b 1464beb4
60055629 3f2356f3 3e9c4e3c 76e3f3af a9db4b32 bd33322b 975696fc e6b23cfb
$ bash install.sh
回答by squiguy
The &allows a process to run in the background.
在&允许进程在后台运行。
sh -x script1.sh &
sh -x script2.sh &
sh -x script3.sh &
回答by Baconator507
Not sure what you are trying to accomplish but you can create a script that calls these 3 or send them to background by adding a "&" at the end.
不确定您要完成什么，但您可以创建一个脚本来调用这 3 个或通过在末尾添加“&”将它们发送到后台。
sh -x script1.sh &
sh -x script2.sh &
sh -x script3.sh &
