Commands by richie (1)

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Run a command as root, with a delay
$ sleep 1h ; sudo command or $ sudo sleep 1h ; sudo command won't work, because by the time the delay is up, sudo will want your password again.

Watch the progress of 'dd'
Running this code will execute dd in the background, and you'll grab the process ID with '$!' and assign it to the 'pid' variable. Now, you can watch the progress with the following: $ while true; do kill -USR1 $pid && sleep 1 && clear; done The important thing to grasp here isn't the filename or location of your input or output, or even the block size for that matter, but the fact that you can keep an eye on 'dd' as it's running to see where you are at during its execution.

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"

Track X Window events in chosen window
After executing this, click on a window you want to track X Window events in. Explaination: "xev will track events in the window with the following -id, which we get by greping window information obtained by xwininfo"

List packages manually installed with process currently running
Sometimes we install programs, we forget about them, and they stay there wasting RAM. This one-liner try to find them.

add the result of a command into vi
':r!ls -l' results in listing the files in the current directory and paste it into vi

Check syntax for all PHP files in the current directory and all subdirectories

External IP (raw data)
can be used in script like : echo $(wget -qO- http://utils.admin-linux.fr/ip.php)

Verify if ntpd is working properly
Used to verify if Network Time Protocol daemon is working properly.

Stoppable sleep
A nice way to interrupt a sleep with a signal.


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