On 12Mar2009 16:37, I wrote:
| With nohup, the outputs of cmd1 and cmd2 are going to the nohup.out
| file, and thus are set to block buffering. Unless cmd1 and cmd2 have
| special command line switches to get them to line buffer (or no-buffer)
| your only recourse is to attach them to terminals, thus tricking them
| into doing line buffering again. Fortunately, this is made convenient by
| the script command. For example, try changing the string "cmd1" into the
| string:
| 
|   script -a -q -f nohup.out cmd1
| 
| (You will probably need GNU script for the -f option; see "man script"
| for details, or just try it.)

This is platform dependent. You might need to change cmd1 into:

  script -a -q -f -c 'cmd1' nohup.out

and thus:

  os.system('''script -a -q -f -c 'cmd1' nohup.out''')

in your batch.py (note the differing quotes).

Anyway, see "man script" on your system for the correct invocation.

Cheers,
-- 
Cameron Simpson <c...@zip.com.au> DoD#743
http://www.cskk.ezoshosting.com/cs/

A man with one watch knows what time it is; a man with two watches is
never sure. - Lee Segall
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