Please explain me command

sluge · 11-13-2012, 01:45 AM

Hello!

What this command is responsible for?
This run on remote shell:

sleep 90 | ifdown eth0 && ifup eth0

It looks like it delays disconection?

druuna · 11-13-2012, 01:49 AM

Quote:

Originally Posted by sluge

What this command is responsible for?
This run on remote shell:

sleep 90 | ifdown eth0 && ifup eth0

It looks like it delays disconection?

first sleep for 90 seconds, then bring down eth0 if this succeeds (&&) bring up eth0

EDIT: see ntubski's reply (post #3)

sleep for 90 seconds and bring down eth0 if this succeeds (&&) and after a 90 sec delay, bring up eth0

ntubski · 11-13-2012, 07:12 AM

Actually, the sleep and the ifup are in a pipeline so they run in parallel. So it really only delays the reconnect. I think it would be better to write it like this

Code:

ifdown eth0 && sleep 90 && ifup eth0