如何同时在多个选项卡/ shell中运行相同的linux命令？

Question

Is there any tool/command in Linux that I can use to run a command in more than one tab simultaneously? I want to run the same command: ./myprog argument1 argument2 simultaneously in more than one shells (I want to increase this so as to put my code under stress later on) to check if the mutexes are working fine in a threaded program.

I am kind of looking for something like what wall does. I can think of using tty's, but that just seems like a lot of pain if I have to scale this to many more shells.

Answer 1

Why not do something like

for i in {1..100}
do
    ./myprog argument1 argument2 &
done

This is in case the shell is bash. You can look into other looping constructs in case of other shells.

Answer 2

Running the jobs asynchronously with redirected output is the simplest solution, but if you really want each process to run in its own terminal, a good option is to use a terminal emulator like screen or tmux . For example:

yes | sed 5q | while read k; do  # iterate 5 times
  tmux new-session -d 'sh -c "/path/to/myprog arg1 arg2; sh"'&
done

The trailing sh causes the session to remain alive after myprog terminates, and the intial yes pipeline is used instead of seq since it works where seq is not available (there are lots of ways to iterate!)

Once the sessions are running, you can attach to them individually to view the output. (See tmux documentation for details.)

Answer 3

Install the moreutulis package (with non-GNU parallel) or, preferably, GNU parallel (often packaged separately; SUSE calls it gnu_parallel, Ubuntu and RedHat call it parallel) so you can use parallel. Then figure out how to specify the terminal your command runs in. For example

parallel yourscript -- tty1 tty2 pts6

Then you just have to figure out how to write "yourscript" to take the tty to run on as an argument, which is a separate question. :)

Answer 4

if you are using gnome terminal, try this one

gnome-terminal --maximize --tab-with-profile=default -e '/bin/sh -c ./myprog argument1 argument2' --tab-with-profile=default -e '/bin/sh -c ./myprog argument1 argument2' --tab-with-profile=default -e '/bin/sh -c ./myprog argument1 argument2'

please check gnome-terminal man page for more options

Answer 5

Use GNU Parallel's --tmux --fg :

parallel -j20 --tmux --fg echo doit {}\; sleep {} ::: {1..100}

Use ctrl-b n and ctrl-b p to cycle between the running terminals.

That way you can keep everything in a single window, but without the output from the jobs mixing.

Answer 6

I had the same situation when I was at college and I did something like this

for i in $(seq 1 10)
do
  xterm -e "./myprog argument1 argument2"&
done

This spawns 10 xterms each running your program in the background.

Answer 7

From comments it seems you don't need stdin, do need stdout, don't want ptys, don't want screen or tmux .

Easy-peasy:

for seq in `seq 5`; do
        ./myprog argument1 argument2 >output$seq &
done

Answer 8

也许你可以（ab）使用clusterssh吗？

Answer 9

打开一堆终端，设置好所有内容，然后在每个终端中快速点击ENTER。