Commands by karel1980 (4)

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Find the package that installed a command

Function to change prompt
Bash function to change your default prompt to something simpler and restore it to normal afterwards.

Read random news on the internet
Access a random news web page on the internet. The Links browser can of course be replaced by Firefox or any modern graphical web browser.

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

Open Vim with two windows
: new command allow to split a Vim screen in two separate windows. Each window can handle its own buffer. Passing the -c new options when Vim start cause to split screen automatically.

Remount a usb disk in Gnome without physically removing and reinserting
Remounts a usb disk /dev/sdb, without having to physically remove and reinsert. (Gnome desktop)

To find which host made maximum number of specific tcp connections
This command is primarily going to work on linux boxes. and needs to be changed, for example IP=10\.194\.194\.2 PORT=389

Get the next weekday for an 'at' command
Line can be modified as needed. This considers weekdays to be Mon-Fri. If run any working day it'll provide a parameters for the next working day for "at". "beep" provided as a sample command. This can be modified easily to include wait time. If you need something to run "D" days after today: # D=4;if [ $(date +%u --date="${D} days") -lt 5 ];then AT="+${D} days";else AT="next monday";fi; echo "beep" | at noon ${AT}

Recursive find and replace file extension / suffix (mass rename files)
Find recursively all files in ~/Notes with the extension '.md' and pipe that via xargs to rename command, which will replace every '.md' to '.txt' in this example (existing files will not be overwritten).

Copy ssh keys to user@host to enable password-less ssh logins.
To generate the keys use the command ssh-keygen


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