Need command to search syslogs

Hi Experts
I am trying to track down an IP address on a unix DNS server using /var/log/syslog. However overwhelmed with data. I know very little of unix but I remember the Grep command as the "search" command. What would the command line be to pull the desired IP from this log?

Thanks in advance
D. arno
dsingh006Asked:
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woolmilkporcCommented:
grep "123.123.123.123" /var/log/syslog
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dsingh006Author Commented:
Yes I had tried that but this is the results
sudo less grep "xxx.xxx.xxx"/var/log/syslog
[sudo] password for mmmmm:
grep: No such file or directory
xxx.xxx.xxx/var/log/syslog: No such file or directory

Then it continues on to the whole log file
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gt2847cSr. Security ConsultantCommented:
Try it this way:

sudo sh -c "grep xxx.xxx.xxx /var/log/syslog | less "
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woolmilkporcCommented:
sudo should not be necessary. Syslog files are generally world-readable.

Leave a space between "123.123.123.123" and the filename.

And for the "less" thing - gt2847c's suggestion is correct.
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gt2847cSr. Security ConsultantCommented:
If the system has reasonable security applied, the syslog files should NOT be world-readable...
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