php shell_exec triggers a job twice

Question

There is an issue I couldn't find the exact problem, or is it a problem anyway I don't know.

I execute below command through shell_exec in php. I'm user I called just once.

curl -o ./server.log --request POST 'crawlserver.xxx.local/workerCallback.php' --user-agent 'xxx' --data 'workerid=worker1&jobid=25&offercount=72&file='/path/to/xxx-2014-02-07-serialized.txt'

this command working like 30 seconds.

while when I ask to bash as ps aux | grep workerCallback

I see 2 different commands triggered, and different process ids. But when look to server.log file it is looking a single request, also I check db and other stuff, the request worked single. But why it is looking twice in commandline by different pids, and commands has little differences. What is the "sh -c" before the command.

1000 27384 0.0 0.0 4404 612 ? S 14:00 0:00 sh -c curl -o ./server.log --request POST 'crawlserver.xxx.local/workerCallback.php' --user-agent 'xxx' --data 'workerid=worker1&jobid=25&offercount=72&file=path/to/xxx-2014-02-07-serialized.txt'

1000 27385 0.0 0.0 88056 3756 ? S 14:00 0:00 curl -o ./server.log --request POST crawlserver.xxx.local/workerCallback.php --user-agent xxx --data workerid=worker1&jobid=25&offercount=72&file=/path/to/xxx-2014-02-07-serialized.txt

Answer 1

Its not the same command twice, the first command is the shell (sh) running your curl command.

The second one is the command itself.

So your code is working fine :)