script problem - acts different :?

**fraxx** · 05-27-2004

my problem:

i made an script to publish my current server ip (my provider uses dynamic ips) on a website. the script works fine starting it manually, but don't as a cronjob.

destribution: debian (knoppix 3.4)

script:

#! /bin/bash
# ftp-script
rm -f /data/currentip.html
echo "<html><body><font face='Tahoma' color='green' style='font-size: 10pt'><u>Derzeitige Server IP:</u>

<font color='black' style='font-size: 8pt'>" >> /data/currentip.html
/sbin/ifconfig ppp0 > /data/ip
/bin/cat /data/ip | /bin/grep inet | /bin/sed 's/.*Adresse:\([0-9\.]*\) .*/\1/g' >> /data/currentip.html
echo "

PuTTY Client</body></html>" >> /data/currentip.html
cp /data/currentip.html /var/www/currentip.html

result (started manually):

Derzeitige Server IP:

217.225.115.133

PuTTY Client

result (started as a cronjob):

Derzeitige Server IP:

inet addr:217.225.115.133 P-t-P:217.5.98.61 Mask:255.255.255.255

PuTTY Client

any ideas?

jens

**andutt** · 05-27-2004

Thats a litte wierd, it seems like your regexp doest get applied when you execute it from cron.

Try to change this line

Code:

/bin/cat /data/ip | /bin/grep inet | /bin/sed 's/.*Adresse&#58;\&#40;&#91;0-9\.&#93;*\&#41; .*/\1/g' >> /data/currentip.html

Witch this:

Code:

/bin/cat /data/ip | grep "inet addr" | grep Bcast | cut -d "&#58;" -f2 | cut -d " " -f1

Which is a little simplier....and see whats happend. Also check to output file for ifconfig from cron and from a manual run to see if the differs.

**fraxx** · 05-27-2004

that's my ifconfig ppp0 output (manually+cronjob):

ppp0
Protokoll:Punkt-zu-Punkt Verbindung
inet Adresse:217.225.115.133 P-z-P:217.5.98.61 Maske:255.255.255.255
UP PUNKTZUPUNKT RUNNING NOARP MULTICAST MTU:1492 Metric:1
RX packets:349881 errors:0 dropped:0 overruns:0 frame:0
TX packets:394153 errors:0 dropped:0 overruns:0 carrier:0
Kollisionen:0 Sendewarteschlangenlänge:3
RX bytes:215823975 (205.8 MiB) TX bytes:278545283 (265.6 MiB)

it's german, so your command line can't work that way. i replaced inet addr with "inet Adresse" and Bcast with "Maske".

result manually: just perfect
result cronjob: no ip output in currentip.html

thanks anyway

**andutt** · 05-27-2004

Ok

Try this then....its should work

Code:

/bin/cat /data/ip | grep "inet Adress" | grep Maske | cut -d "&#58;" -f2 | cut -d " " -f1

Try to execute it by hand and by cron to see if it results the same....or if it workes better...

**fraxx** · 05-27-2004

hmm, replace "inet Adresse" with "inet Adress"? I don't notice any other change. Result is the same like in my third post

.

**andutt** · 05-27-2004

But if you run my command on the /data/ip file that looksl like this

Code:

ppp0 
Protokoll&#58;Punkt-zu-Punkt Verbindung 
inet Adresse&#58;217.225.115.133 P-z-P&#58;217.5.98.61 Maske&#58;255.255.255.255 
UP PUNKTZUPUNKT RUNNING NOARP MULTICAST MTU&#58;1492 Metric&#58;1 
RX packets&#58;349881 errors&#58;0 dropped&#58;0 overruns&#58;0 frame&#58;0 
TX packets&#58;394153 errors&#58;0 dropped&#58;0 overruns&#58;0 carrier&#58;0 
Kollisionen&#58;0 Sendewarteschlangenlänge&#58;3 
RX bytes&#58;215823975 &#40;205.8 MiB&#41; TX bytes&#58;278545283 &#40;265.6 MiB&#41;

You should get :217.225.115.133

I thought that was your issue??

**fraxx** · 05-27-2004

äh yes, but your 2nd post was nearly the same like my 2nd (i changed your command line from your first post for german output before), so i was confused

.

however, i should get 217.225.115.133. and i do! but only manually.
the cronjob don't get any ip. very strange

**ewanrg** · 05-27-2004

Originally Posted by fraxx

however, i should get 217.225.115.133. and i do! but only manually. the cronjob don't get any ip. very strange

Possibly stating the obvious, but what user are you when you run this manually? Crontab (at least the versions I've played with) runs as a default low-level user if you don't include a sudo or the like, and so perhaps that low-level user in your dist doesn't have permissions to check this?

HTH,
Ewan

**fraxx** · 05-27-2004

hmmm good idea!

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