Commands by essayhelp (0)

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Merge AVI-files without recoding
Useful for when you download movies split into < 700mb parts. Credit to rich @ http://superuser.com/questions/318640/merge-avi-files-without-recoding-in-mac-os-x-lion mencoder is generally included with mplayer. MacPorts: $sudo port install mplayer

Install pip with Proxy
Installs pip packages defining a proxy

Downsample mp3s to 128K
This will lower the quality of mp3 files, but is necessary to play them on some mobile devices.

Decrypt MD5
Decrypt MD5 , replace 1cb251ec0d568de6a929b520c4aed8d1 with the MD5 string you want to decrypt

watch iptables counters
This will allow you to watch as matches occur in real-time. To filter out only ACCEPT, DROP, LOG..etc, then run the following command: watch 'iptables -nvL | grep -v "0 0" && grep "ACCEPT"' The -v is used to do an inverted filter. ie. NOT "0 0"

Monitor bandwidth by pid
Nethogs is a useful tool for monitor bandwidth consumption by pid. Tested on Debian an CentOs

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"

Check if you work on a virtual/physical machine in Linux
Command used to know if we are working on a virtual or physical machine. This command will use the dmidecode utility to retrieve hardware information of your computer via the BIOS. Run this command as root or with sudo.

colorize comm output
It just colorizes the line based on if it has 0, 1 or 2 tabs at the beginning of the line. Won't work so well if lines already begin with tabs (too bad comm doesn't have an option to substitute \t for something else). Don't forget comm needs input files to be sorted. You can use a shortcut like this with bash: comm

Erase a word

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