Commands by drerik (3)

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Get your external IP address if your machine has a DNS entry
Using DynDNS or a similar service not only allows access to your home machine from outside without needing to know what IP the ISP has assigned to it but it also comes in handy if you want to know your external IP address. The only purpose of the sed command is to remove the leading "host.na.me has address " part from the output. If you don't need to discard it you can simply use $ host $HOSTNAME

Find brute force attempts on SSHd
Searches the /var/log/secure log file for Failed and/or invalid user log in attempts.

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"

tar via network

Sprunge.us - CLI alternative to PasteBin.com
NAME sprunge: command line pastebin: SYNOPSIS | curl -F 'sprunge=

Quickly share code or text from vim to others.
Sprunge.us is a code/text sharing site like pastebin, but it is easy to post stuff from the command line. $ How it works: $ :w !command In vim, w writes the current tab to a file when a filename is given afterwards, but if !command is given, the output is piped to the stdin of command. $curl -F "sprunge=

1+2-3+4-5+6-7 Series

Install pip with Proxy
Installs pip packages defining a proxy

change directory to actual path instead of symlink path
If you use symlinks a lot, especially nested symlinks, this puts you back on the absolute path to command-line-fu-nirvana. (Note the backticks around pwd).

Find directories under home directory with 777 permissions, change to 755, and list them on console


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