Skip to main content

regex with grep



The trick with using regex with grep is that no // slashes are needed, you simply quote the text and use regex controls.

ie: something like this would list everyline ending in exactly no

grep '^.* no$' sshd_config 

However, for the same task, this would be more helpful...

grep '^[^#].* no$' sshd_config

As it excludes the leading # (comment)


Comments

Post a Comment

Popular posts from this blog

NMAP

It's been about 15 years since I used NMAP, I forgot how useful the tool is. To find out what services are running on an IP address simply use something like nmap -n -v -p1-10000 x.x.x.x -n tells nmap not to do name resolution (saves about 13 seconds if the IP you're scanning isn't in DNS_ -v verbose -p1-10000 says scan ports 1 to 10,000 (otherwise nmap will only scan the first 1000 ports)
Post a Comment
Read more