Re: [HTCondor-users] shell pipe/cmd-chain as job command/argument in python bindings

[John M Knoeller <johnkn@xxxxxxxxxxx>]

Hi Thomas,  sorry to say but a short script is the only way to go here.

The && doesn't work when we try and pass it to /usr/bin/bash as an argument. 

This works interactively because the shell you are using to run the command does not pass && down

to the program being started, but treats the && and what comes after as a command to itself.

-tj

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From: HTCondor-users <htcondor-users-bounces@xxxxxxxxxxx> on behalf of Thomas Hartmann <thomas.hartmann@xxxxxxx>
Sent: Wednesday, March 3, 2021 4:53 AM
To: HTCondor-Users Mail List <htcondor-users@xxxxxxxxxxx>
Subject: [HTCondor-users] shell pipe/cmd-chain as job command/argument in python bindings

 

Hi all,

I just tried to submit a quick job with the Python bindings, where I
attempted to run just a few shell commands. I juggled a bit with the
position of the execs in the `Cmd` and `Args` keys - but all failed [1]

So, I tried to wrap the &&-chained commands into one string-argument and
use the shell as executable [2] (not the most elegant approach...).
However, it also failed for me :-/
(I guss the behaviour is similar for submissions through the CLI)

Is there a way to get it running - or is a short script the only way to
go...?

Cheers,
   Thomas



[1]
     jobAd["Cmd"] = '/usr/bin/env'
     jobAd["Args"] = '&& /usr/bin/cat .job.ad && echo "FOO" '
     schedd.submit(job_ad)

which actually cat'ed me `echo` - I guess the shell interpretation of
operators like `&&` is not possible here, or?



[2]
     jobAd["Cmd"] = '/usr/bin/bash'
     jobAd["Args"] = '-c "/usr/bin/cat .job.ad && /usr/bin/echo \FOO\"" '