ls & vs ls

atharvdesai1996 · 05-26-2020, 03:42 PM

Can someone please explain me the difeerence between "ls" and "ls &" command in context of parent-child processes?

Roken · 05-26-2020, 04:05 PM

Appending "&" to any bash command will push it to the background, and anything that follows will continue regardless.

Without "&" then the command must finish before anything after it runs.

rkelsen · 05-26-2020, 04:24 PM

this looks like a homework question...

Mill J · 05-26-2020, 04:49 PM

When would

Code:

 ls &

ever even be used? wouldn't that be kinda counter-productive?

I use the & argument mostly for launching gui apps or servers.

rtmistler · 05-26-2020, 04:56 PM

Quote:

Originally Posted by atharvdesai1996

Can someone please explain me the difeerence between "ls" and "ls &" command in context of parent-child processes?

Both command forms involve parent and child processes. Their states are different for each way the commands get typed.

What's your impression of the differences?

Roken · 05-26-2020, 11:37 PM

Quote:

Originally Posted by Mill J

When would

Code:

 ls &

ever even be used? wouldn't that be kinda counter-productive?

That was my thought, too. Can't think of any time you would use it.

JJJCR · 05-26-2020, 11:41 PM

Quote:

Originally Posted by Roken

That was my thought, too. Can't think of any time you would use it.

You would use it for searching 3x-men movies, and parents behind your back/

JJJCR · 05-26-2020, 11:43 PM

@OP check out this link: https://www.tecmint.com/chaining-ope...ical-examples/