Pick out ip-address

Jeff Epler jepler at unpythonic.net
Mon Feb 16 14:04:39 CET 2004


On Mon, Feb 16, 2004 at 01:19:22PM +0100, Alexander Födisch wrote:
> 13	cmd=os.popen('LANG=""/sbin/ifconfig'+interface)

This line seems suspect.  The resulting string passed to popen will be
along the lines of
    LANG=""/sbin/ifconfigippp0
try running this at the prompt and you'll get nothing. (Well, actually,
the value of LANG will be set to a new value:
    $ echo $LANG
    /sbin/ifconfigippp0

When I write Python code that assembles strings, I'm much more likely to
use %-formatting than use + for concatenation:
    cmd = os.popen('LANG="" /sbin/ifconfig %s' % (interface,))
etc

best of luck,
Jeff




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