[SOLVED] How to run a program in background and also using && to execute another command

P.G.Krish · 06-08-2016, 08:56 AM

Iam using ubuntu

I want to run my node app in background and curl simultaneously using && .I tried following but not work

Code:

node app.js &;curl localhost

and i tried another one

Code:

node app.js & && curl localhost

but both not working

Guttorm · 06-08-2016, 09:20 AM

Hello

Using both & and && doesn't really make sense. The && means only start the second command if the first doesn't fail. And & means run the first command in the background - execute the second without waiting for the first command to finish. If the second should start anyway, you could do something like this:

Code:

(node app.js &) ; curl localhost

If the second command fails because app.js hasn't started yet, you could maybe add some sleep so it has time to start?

Code:

(node app.js &) ; sleep 3 ; curl localhost

keefaz · 06-08-2016, 10:57 AM

Quote:

Originally Posted by P.G.Krish

Iam using ubuntu

I want to run my node app in background and curl simultaneously

Just do

Code:

node app.js & ; curl localhost &

grail · 06-08-2016, 11:13 AM

My question would be why you thought you needed &&?

P.G.Krish · 06-09-2016, 04:21 AM

Quote:

Originally Posted by keefaz

Just do

Code:

node app.js & ; curl localhost &

This command says

Code:

bash: syntax error near unexpected token `;'

P.G.Krish · 06-09-2016, 04:23 AM

Quote:

Originally Posted by grail

My question would be why you thought you needed &&?

I thought because it will run two commands frequently

keefaz · 06-09-2016, 06:22 AM

Quote:

Originally Posted by P.G.Krish

This command says

Code:

bash: syntax error near unexpected token `;'

Oops, you don't need semicolon there

Code:

node app.js & curl localhost &