Linux - Shell script run curl command in parallel

Question

I would like to create linux shell script to run CURL command in parallel

For example: I have three command like

I want to call above three command simultaneously.

Any help is appreciated.

just add '&' to the end of your command, you can reference here http://stackoverflow.com/questions/13338870/what-does-at-the-end-of-a-linux-command-mean — sel-fish, Jul 11 '16 at 12:36

score 12 · Accepted Answer · answered Jul 11 '16 at 12:39

12

I think a bash script like:

#!/bin/bash

curl -s http://localhost/process.php?id=1 &
curl -s http://localhost/process.php?id=2 &
curl -s http://localhost/process.php?id=3 &

However, this is starting all tasks as background processes. Don't know how crucial simultaneous starting of the process is.

answered Jul 11 '16 at 12:39

FWIW this was enough for me. The two requests were logged as happened in the same millisecond. – Halil Özgür May 11 '18 at 15:57
Is there any way to wait for them all to finish? – chovy Jan 11 '21 at 22:13
Yes.... see: https://stackoverflow.com/questions/14254118/waiting-for-background-processes-to-finish-before-exiting-script – Ramon van der Werf Jan 15 '21 at 12:52

score 3 · Answer 2 · answered Jul 11 '16 at 12:39

I think you can use & in between the curl commands in a single line like this:

curl -s http://localhost/process.php?id=1 & curl -s http://localhost/process.php?id=2 & curl -s http://localhost/process.php?id=3

2 Answers2