When aliens invade Earth, be first to warn your neighbours by placing your computer screen at a window and executing this potentially Earth-saving command.

Ctrl C when aliens are defeated.

No need to install additional packages

eg:

say hello

For multiword

say how+are+you

Checks your gmail account every 30 seconds and display the number of new messages in the top right corner of the terminal.

A kind of CLI "Gmail notifier" if you will. :-)

This is a mashup of http://www.commandlinefu.com/commands/view/7916/put-a-console-clock-in-top-right-corner and http://www.commandlinefu.com/commands/view/3386/check-your-unread-gmail-from-the-command-line

Use the command to create a script and bind it to a key using keyboard shortcut.

eg:

Script locks the screen in a loop until the command is executed again.At first it

Works on Laptops, Desktop having communication b/w UPS & CPU

You should really use keys. Really. I'm serious.

But if you have to add your key, change password etc. for a long list of servers, this might help.

Use acpi and notify-send to report current temperature every five minutes.

Works best in a shell script run at startup. acpi is called for temperature and fed to notify-send for a tooltip. After waiting five minutes, it will start over.

works best in a shell script run at startup. It will ping localhost once and output to null, after it does that, acpi is called for temperature in fahrenheit and piped through to another loop that feeds notify-send for a tooltip. After waiting five minutes, it will start over.

credit goes to icanhaslinux.com

http://icanhaslinux.com/2007/09/17/annoy-your-coworkers-linux-style/

credit goes to icanhaslinux.com

http://icanhaslinux.com/2007/09/17/annoy-your-coworkers-linux-style/

Only slightly different than previous commands. The benefit is that your "watch" should die when the dd command has completed. (Of course this would depend on /proc being available)

Take a screenshot every 2 seconds and save it as a png file

This command are using by me for checking connection with Internet.

Gives not only date but also some interesting status about the System

this command will beep like an alarm for one minute from 18:57. you can change "1857" to your desired time.

you should have alsa-oss package installed, and you should also be root or part of "audio" group.

I'd prefer this one, you have to install espeak to get this running

Watch the temperatures of your CPU cores in real time at the command line. Press CONTROL+C to end.

GORY DETAILS: Your computer needs to support sensors (many laptops, for example, do not). You'll need to install the lm-sensors package if it isn't already installed. And it helps to run the `sensors-detect` command to set up your sensor kernel modules first. At the very end of the sensors-detect interactive shell prompt, answer YES to add the new lines to the list of kernel modules loaded at boot.

Just replace 15m with desired time. no suffix or 's' for seconds; 'h' for hours

You need to be root or in audio group to write to /dev/dsp.

You may use yes | head -n 2000 for about 1 second beep.

Wrote this as echo -e '\a' not always works as desired (ex. visual bell)

requires sp-auth installed

This command will auto kill sp-sc after vlc is closed, so u wont have to do it manually