Re: parsing text from ethtool command
On Nov 1, 7:35 pm, Ian Kelly ian.g.ke...@gmail.com wrote: On Tue, Nov 1, 2011 at 5:19 PM, Miki Tebeka miki.teb...@gmail.com wrote: In my box, there are some spaces (tabs?) before Speed. IMO re.search(Speed, line) will be a more robust. Or simply: if Speed in line: There is no need for a regular expression here. This would also work and be a bit more discriminating: if line.strip().startswith(Speed) BTW, to the OP, note that your condition (line[0:6] == Speed) cannot match, since line[0:6] is a 6-character slice, while Speed is a 5-character string. Cheers, Ian Ian, Replacing my regular expression with line.strip().startswith did the trick. Thanks for the tip! Paul -- http://mail.python.org/mailman/listinfo/python-list
parsing text from ethtool command
I'm still trying to write that seemingly simple Python script to print
out network interfaces (as found in the ifconfig -a command) and
their speed (ethtool interface). The idea is to loop for each
interface and
print out its speed. I'm looping correctly, but have some issues
parsing the output for all interfaces except for the pan0
interface. I'm running on eth1, and the ifconfig -a command also
shows an eth0, and of course lo. My script is trying to match on the
string Speed, but I never seem to successfully enter the if
clause.
First, here is the output of ethtool eth1:
=
Settings for eth1:
Supported ports: [ TP ]
Supported link modes: 10baseT/Half 10baseT/Full
100baseT/Half 100baseT/Full
Supports auto-negotiation: Yes
Advertised link modes: 10baseT/Half 10baseT/Full
100baseT/Half 100baseT/Full
Advertised pause frame use: No
Advertised auto-negotiation: Yes
Speed: 100Mb/s
Duplex: Full
Port: Twisted Pair
PHYAD: 1
Transceiver: internal
Auto-negotiation: on
MDI-X: off
Supports Wake-on: pumbag
Wake-on: g
Current message level: 0x0001 (1)
Link detected: yes
=
The script *should* match on the string Speed and then assign 100Mb/
s to a variable, but is never getting past the second if statement
below:
=
#!/usr/bin/python
# Quick and dirty script to print out available interfaces and their
speed
# Initializations
output = Interface: %s Speed: %s
noinfo = (Speed Unknown)
speed = noinfo
import os, socket, types, subprocess
fp = os.popen(ifconfig -a)
dat=fp.read()
dat=dat.split('\n')
for line in dat:
if line[10:20] == Link encap:
interface=line[:9]
cmd = ethtool + interface
gp = os.popen(cmd)
fat=gp.read()
fat=fat.split('\n')
for line in fat:
if line[0:6] == Speed:
try:
speed=line[8:]
except:
speed=noinfo
print output % (interface, speed)
=
Again, I appreciate everyone's patience, as I'm obviously I'm a python
newbie. Thanks in advance!
--
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How do I pass a variable to os.popen?
I'm trying to write a simple Python script to print out network
interfaces (as found in the ifconfig -a command) and their speed
(ethtool interface). The idea is to loop for each interface and
print out its speed. os.popen seems to be the right solution for the
ifconfig command, but it doesn't seem to like me passing the interface
variable as an argument. Code snippet is below:
#!/usr/bin/python
# Quick and dirty script to print out available interfaces and their
speed
# Initializations
output = Interface: %s Speed: %s
import os, socket, types
fp = os.popen(ifconfig -a)
dat=fp.read()
dat=dat.split('\n')
for line in dat:
if line[10:20] == Link encap:
interface=line[:9]
cmd = 'ethtool %interface'
print cmd
gp = os.popen(cmd)
fat=gp.read()
fat=fat.split('\n')
=
I'm printing out cmd in an attempt to debug, and interface seems
to be passed as a string and not a variable. Obviously I'm a newbie,
and I'm hoping this is a simple syntax issue. Thanks in advance!
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