Commands by lingo (11)

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Watch the progress of 'dd'
This version was mentioned in the comments. Credits go to flatcap.

grep binary (hexadecimal) patterns
-P activates the Perl regular expression mode.

Find usb device in realtime
Using this command you can track a moment when usb device was attached.

One command line web server on port 80 using nc (netcat)
Very simple web server listening on port 80 will serve index.html file or whatever file you like pointing your browser at http://your-IP-address/index.html for example. If your web server is down for maintenance and you'd like to inform your visitors about it, quickly and easily, you just have to put into the index.html file the right HTML code and you are done! Of course you need to be root to run the command using port 80.

SSH tunneling self-connection
- port 8080 on localhost will be a SOCKSv5 proxy - at localhost:localport1 you will be connected to the external source server1:remoteport1 and at bind_address2:localport2 to server2:remoteport2 - you will be using only IPv4 and arcfour/blowfish-cbc, in order to speed up the tunnel - if you lose the connection, autossh will resume it at soon as possible - the tunnel is here a background process, wiithout any terminal window open

Find usb device in realtime
Using this command you can track a moment when usb device was attached.

send a circular

remove empty lines

Find the date of the first commit in a git repository
Finds the date of the first commit in a git repository branch

find out how many days since given date
You can also do this for seconds, minutes, hours, etc... Can't use dates before the epoch, though.


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