On Sun, Feb 26, 2017 at 06:40:50PM +0100, Joachim Backes wrote: > On 02/26/17 18:08, bruce wrote: > > Morn guys... > > > > The following works as a test ssh to fire off a remote cmd. However it > > waits for the cmd to complete befor returning. I'm looking to run th > > cmd as a background on the local/calling instance. Ultimaely, I'll be > > testing this from py/php scripts. > > > > ssh -t user1@67.205.151.05 'cat /cloud/hash2.dat | wc -l' > > > > -would the following work? > > > > ssh -t user1@67.205.151.05 'cat /cloud/hash2.dat | wc -l' & > > It runs the (complete) local ssh cmd (including it's parameters) locally in > background. If you want to run the remote cmd in background > (cat /cloud/hash2.dat | wc -l) you must add the "&" before the closing "'" > and not after. > > But this means your ssh command likely may exit before the remote cmd > finishes. Is this reasonable? > > Kind regards > > Joachim Backes
Two other considerations: Where is the output from the pipeline sink (wc -l in this case) going to go? Without the ssh connection, it will go to stdout, either closed or set to /dev/null. When the ssh connection terminates, I suspect its children processes on the remote to receive the "Hang UP" (your parent has died) signal and will likely commit suicide. Jon -- Jon H. LaBadie jo...@jgcomp.com _______________________________________________ users mailing list -- users@lists.fedoraproject.org To unsubscribe send an email to users-le...@lists.fedoraproject.org
