Commands by lawn123 (0)

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print character classes
Today I needed a way to print various character classes to use as input for a program I was writing. Also a nice way to visualize character classes.

Poor man's unsort (randomize lines)

Edit Camera Model in metadata:

Print the last modified file

Block known dirty hosts from reaching your machine
Blacklisted is a compiled list of all known dirty hosts (botnets, spammers, bruteforcers, etc.) which is updated on an hourly basis. This command will get the list and create the rules for you, if you want them automatically blocked, append |sh to the end of the command line. It's a more practical solution to block all and allow in specifics however, there are many who don't or can't do this which is where this script will come in handy. For those using ipfw, a quick fix would be {print "add deny ip from "$1" to any}. Posted in the sample output are the top two entries. Be advised the blacklisted file itself filters out RFC1918 addresses (10.x.x.x, 172.16-31.x.x, 192.168.x.x) however, it is advisable you check/parse the list before you implement the rules

Which processes are listening on a specific port (e.g. port 80)
swap out "80" for your port of interest. Can use port number or named ports e.g. "http"

remove hostname from known_hosts

Get rid from a blank display without reboot
Killall5 will kill your session and redirect to login screen. -Very useful when suffering display problems. -Can use F1-F6 -Need to login in the particular console if not already

Console clock
Shows a simple clock in the console -t param removes the watch header Ctrl-c to exit

Show max lengths of all fields in a pipe delimited file with header row

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