How to kill ssh without killing another process?

10-17-2002, 01:10 AM

Ok, that was a bad title. What I'm trying to do is ssh into another machine, and start a big fat job. Then I'd like to close my ssh session (without killing the rotund job), and check the status later. Fer example, let's say I'd like to let fink run all night without having to be ssh'ed in the whole time:

% ssh otheruser@othermachine.net

[othermachine:~] otheruser% fink update-all

Should I do 'fink update-all &' to background the process instead? Thanks.

blb · 10-17-2002, 01:54 AM

Safest way would be

Code:

nohup fink update-all > /tmp/fink.log 2>&1 &

for sh-like shells, or

Code:

nohup fink update-all >& /tmp/fink.log &

for csh-like shells. What this does is, with nohup, makes sure your logout won't drop the process (which can happen), and redirects all output to the given log file. This way you can log in later and check the results.

10-17-2002, 02:07 AM

Cool, that takes care of step 1 (be able to kill ssh without killing fink update-all), and step 2 (make a log of fink's output to peruse later). Thank you. One last question, though, just for clarification. I could start 'fink update-all' with nohup, and then just hit ^d (Ctrl D) to close the ssh session without affecting the process I've just started, right?

zed · 10-17-2002, 03:23 AM

correct...

check the man page for nohup

man nohup

the nohup basically stop the process from being affected by the terminal that ran it, ie it won't die when you log out...

The only thing.... obviously you can only runn commands that are not going to want input from the terminal.

Cheers,

--Zed

bakaDeshi · 10-17-2002, 04:36 AM

TiMan,

This is what I do.

Login-ssh
screen
fink update-all
^a then d (Cont -a then d, detaches)
close ssh session.

course you need to install screen.

-hth

10-17-2002, 10:45 AM

Thanks everyone! I had wondered if screen would do this. I guess I'll have to try both ways.

10-17-2002, 01:10 AM	#1
Titanium Man Guest Posts: n/a	How to kill ssh without killing another process? Ok, that was a bad title. What I'm trying to do is ssh into another machine, and start a big fat job. Then I'd like to close my ssh session (without killing the rotund job), and check the status later. Fer example, let's say I'd like to let fink run all night without having to be ssh'ed in the whole time: % ssh otheruser@othermachine.net [othermachine:~] otheruser% fink update-all Should I do 'fink update-all &' to background the process instead? Thanks.

10-17-2002, 01:54 AM	#2
blb All Star Join Date: Jan 2002 Location: CO, USA Posts: 908	Safest way would be Code: nohup fink update-all > /tmp/fink.log 2>&1 & for sh-like shells, or Code: nohup fink update-all >& /tmp/fink.log & for csh-like shells. What this does is, with nohup, makes sure your logout won't drop the process (which can happen), and redirects all output to the given log file. This way you can log in later and check the results.

10-17-2002, 04:36 AM	#5
bakaDeshi Triple-A Player Join Date: Apr 2002 Location: Restaurant at the End of the Universe Posts: 171	TiMan, This is what I do. Login-ssh screen fink update-all ^a then d (Cont -a then d, detaches) close ssh session. course you need to install screen. -hth __________________ —bakaDeshi Caution! Mac User at the Command Line.

10-17-2002, 02:07 AM	#3
Titanium Man Guest Posts: n/a	Cool, that takes care of step 1 (be able to kill ssh without killing fink update-all), and step 2 (make a log of fink's output to peruse later). Thank you. One last question, though, just for clarification. I could start 'fink update-all' with nohup, and then just hit ^d (Ctrl D) to close the ssh session without affecting the process I've just started, right?

10-17-2002, 03:23 AM	#4
zed Major Leaguer Join Date: Sep 2002 Location: Earth Posts: 381	correct... check the man page for nohup man nohup the nohup basically stop the process from being affected by the terminal that ran it, ie it won't die when you log out... The only thing.... obviously you can only runn commands that are not going to want input from the terminal. Cheers, --Zed

10-17-2002, 10:45 AM	#6
Titanium Man Guest Posts: n/a	Thanks everyone! I had wondered if screen would do this. I guess I'll have to try both ways.