Event not found error

Question

I am trying to execute the below command.

ssh node1 "nohup sleep 66 &; echo $!"

But I am getting the error:

-bash: !": event not found

I need to store the process id to check the status later – Ravikanth Apr 20 '15 at 10:01 — Ravikanth, Apr 20 '15 at 10:01

Denys Séguret · Answer 1 · 2015-04-20T12:27:47.017

2

You should use single quotes to prevent interpretation of the $!:

ssh node1 'nohup sleep 66 &; echo $!'

It also looks like the ; isn't useful here. This seems to work:

ssh node1 'nohup sleep 66 & echo $!'

edited Apr 20 '15 at 12:27

answered Apr 20 '15 at 10:03

Denys Séguret

bash: -c: line 0: syntax error near unexpected token `;' bash: -c: line 0: `nohup sleep 66 &; echo $!' – Ravikanth Apr 20 '15 at 10:07
Not working with single quotes also – Ravikanth Apr 20 '15 at 10:35
@Ravikanth I've had a similar problem. Look at http://stackoverflow.com/questions/26754469/get-the-pid-of-a-command-whose-output-is-piped – Denys Séguret Apr 20 '15 at 12:28

score 0 · Accepted Answer · edited Jun 19 '15 at 13:04

0

ssh node1 'Pgrep -f sleep 66'

solved the issue

edited Jun 19 '15 at 13:04

Artjom B.

answered Jun 19 '15 at 12:57

Ravikanth

1

Please extend your answer: Why does your answer solve the question? – Artjom B. Jun 19 '15 at 13:05
storing the value of the above command in variable that will store the process id of sleep 66 . And we can check the process id status using variable anytime. The pupose of question was to store the process id of remote machine in variable. so we can use:1) ssh node1 `nohup sleep 66 &` 2) x(variable)=`ssh node1 'pgrep -f sleep 66' – Ravikanth Jun 24 '15 at 06:41

2 Answers2