Linux command that spawns multiple processes
I am looking for a linux command (like ls, time or anything similar) that spawns multiple processes. Anything which is to be run from a command line and not a shell script.
The reason is I want to see parent-child relationship on the htop and with different Process IDs.
Thanks
command-line process
asked yesterday
talekeDskobeDatalekeDskobeDa
191
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I am looking for a linux command (like ls, time or anything similar) that spawns multiple processes. Anything which is to be run from a command line and not a shell script.
The reason is I want to see parent-child relationship on the htop and with different Process IDs.
Thanks
command-line process
asked yesterday
talekeDskobeDatalekeDskobeDa
191
New contributor
talekeDskobeDa is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
3
It might be easier to write a program than to use an existing command. After all, commands exist to do something, and you might not want that something to be done. You could easily write a program that spawns processes that do something like compute the first N primes, taking up processor cycles but having no other effect on your system.
– jamesqf
yesterday
Woulddigdo?
– kasperd
15 hours ago
add a comment |
I am looking for a linux command (like ls, time or anything similar) that spawns multiple processes. Anything which is to be run from a command line and not a shell script.
The reason is I want to see parent-child relationship on the htop and with different Process IDs.
Thanks
command-line process
asked yesterday
talekeDskobeDatalekeDskobeDa
191
New contributor
talekeDskobeDa is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
I am looking for a linux command (like ls, time or anything similar) that spawns multiple processes. Anything which is to be run from a command line and not a shell script.
The reason is I want to see parent-child relationship on the htop and with different Process IDs.
Thanks
command-line process
command-line process
asked yesterday
talekeDskobeDatalekeDskobeDa
191
New contributor
talekeDskobeDa is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
asked yesterday
talekeDskobeDatalekeDskobeDa
191
New contributor
talekeDskobeDa is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
asked yesterday
talekeDskobeDatalekeDskobeDa
191
New contributor
talekeDskobeDa is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
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asked yesterday
talekeDskobeDatalekeDskobeDa
191
asked yesterday
talekeDskobeDatalekeDskobeDa
191
191
New contributor
talekeDskobeDa is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
New contributor
talekeDskobeDa is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
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Check out our Code of Conduct.
3
It might be easier to write a program than to use an existing command. After all, commands exist to do something, and you might not want that something to be done. You could easily write a program that spawns processes that do something like compute the first N primes, taking up processor cycles but having no other effect on your system.
– jamesqf
yesterday
Woulddigdo?
– kasperd
15 hours ago
add a comment |
3
It might be easier to write a program than to use an existing command. After all, commands exist to do something, and you might not want that something to be done. You could easily write a program that spawns processes that do something like compute the first N primes, taking up processor cycles but having no other effect on your system.
– jamesqf
yesterday
Woulddigdo?
– kasperd
15 hours ago
3
3
It might be easier to write a program than to use an existing command. After all, commands exist to do something, and you might not want that something to be done. You could easily write a program that spawns processes that do something like compute the first N primes, taking up processor cycles but having no other effect on your system.
– jamesqf
yesterday
It might be easier to write a program than to use an existing command. After all, commands exist to do something, and you might not want that something to be done. You could easily write a program that spawns processes that do something like compute the first N primes, taking up processor cycles but having no other effect on your system.
– jamesqf
yesterday
Would
dig do?– kasperd
15 hours ago
Would
dig do?– kasperd
15 hours ago
add a comment |
2 Answers
2
active
oldest
votes
The & command separator will do this for you. Use it carefully and wisely, but here is a simple way to see process relationships:
$ sleep 5 & pstree -p $$
[1] 13369
bash(13337)─┬─pstree(13370)
└─sleep(13369)
The [1] 13369 shows that sleep (which has PID 13369), has been put into the background as Job #1. $$ returns to the shell the PID of itself, so we feed that into pstree to show the process tree with a root of our shell's PID, to show all child processes.
answered yesterday
DopeGhotiDopeGhoti
45.1k55988
add a comment |
If you don't want to have any shells in the mix, you can simply use one of the "wrapper" programs that spawn another program to do something with it:
/bin/time sleep 60
watch sleep 1(this one will keep respawningsleep)
answered yesterday
TooTeaTooTea
659110
add a comment |
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2 Answers
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The & command separator will do this for you. Use it carefully and wisely, but here is a simple way to see process relationships:
$ sleep 5 & pstree -p $$
[1] 13369
bash(13337)─┬─pstree(13370)
└─sleep(13369)
The [1] 13369 shows that sleep (which has PID 13369), has been put into the background as Job #1. $$ returns to the shell the PID of itself, so we feed that into pstree to show the process tree with a root of our shell's PID, to show all child processes.
answered yesterday
DopeGhotiDopeGhoti
45.1k55988
add a comment |
The & command separator will do this for you. Use it carefully and wisely, but here is a simple way to see process relationships:
$ sleep 5 & pstree -p $$
[1] 13369
bash(13337)─┬─pstree(13370)
└─sleep(13369)
The [1] 13369 shows that sleep (which has PID 13369), has been put into the background as Job #1. $$ returns to the shell the PID of itself, so we feed that into pstree to show the process tree with a root of our shell's PID, to show all child processes.
answered yesterday
DopeGhotiDopeGhoti
45.1k55988
add a comment |
The & command separator will do this for you. Use it carefully and wisely, but here is a simple way to see process relationships:
$ sleep 5 & pstree -p $$
[1] 13369
bash(13337)─┬─pstree(13370)
└─sleep(13369)
The [1] 13369 shows that sleep (which has PID 13369), has been put into the background as Job #1. $$ returns to the shell the PID of itself, so we feed that into pstree to show the process tree with a root of our shell's PID, to show all child processes.
answered yesterday
DopeGhotiDopeGhoti
45.1k55988
The & command separator will do this for you. Use it carefully and wisely, but here is a simple way to see process relationships:
$ sleep 5 & pstree -p $$
[1] 13369
bash(13337)─┬─pstree(13370)
└─sleep(13369)
The [1] 13369 shows that sleep (which has PID 13369), has been put into the background as Job #1. $$ returns to the shell the PID of itself, so we feed that into pstree to show the process tree with a root of our shell's PID, to show all child processes.
answered yesterday
DopeGhotiDopeGhoti
45.1k55988
answered yesterday
DopeGhotiDopeGhoti
45.1k55988
answered yesterday
DopeGhotiDopeGhoti
45.1k55988
answered yesterday
DopeGhotiDopeGhoti
45.1k55988
45.1k55988
add a comment |
add a comment |
If you don't want to have any shells in the mix, you can simply use one of the "wrapper" programs that spawn another program to do something with it:
/bin/time sleep 60
watch sleep 1(this one will keep respawningsleep)
answered yesterday
TooTeaTooTea
659110
add a comment |
If you don't want to have any shells in the mix, you can simply use one of the "wrapper" programs that spawn another program to do something with it:
/bin/time sleep 60
watch sleep 1(this one will keep respawningsleep)
answered yesterday
TooTeaTooTea
659110
add a comment |
If you don't want to have any shells in the mix, you can simply use one of the "wrapper" programs that spawn another program to do something with it:
/bin/time sleep 60
watch sleep 1(this one will keep respawningsleep)
answered yesterday
TooTeaTooTea
659110
If you don't want to have any shells in the mix, you can simply use one of the "wrapper" programs that spawn another program to do something with it:
/bin/time sleep 60
watch sleep 1(this one will keep respawningsleep)
answered yesterday
TooTeaTooTea
659110
answered yesterday
TooTeaTooTea
659110
answered yesterday
TooTeaTooTea
659110
answered yesterday
TooTeaTooTea
659110
659110
add a comment |
add a comment |
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3
It might be easier to write a program than to use an existing command. After all, commands exist to do something, and you might not want that something to be done. You could easily write a program that spawns processes that do something like compute the first N primes, taking up processor cycles but having no other effect on your system.
– jamesqf
yesterday
Would
digdo?– kasperd
15 hours ago