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How fast is the connexion to a URL, some stats from curl

Copy files for backup storage
Backup a whole directory copying only updated files.

Repoint an existing symlink to a new location
Instead of deleting an existing symlink and then re-creating it pointing at the new location, it is possible to perform the same action with this one command. Interesting discussion on whether this is possible to do atomically here: http://answers.google.com/answers/threadview?id=526119

Select rectangular screen area
Hold 'Ctrl' + 'Alt' key while selecting rectangular text area of the screen with left mouse button. Should work in any terminal screen (xterm, konsole, ...) under X, if not then try with 'Ctrl' + 'Shift' + 'Alt' or two-combination of these.

Limit the transfer rate and size of data over a pipe
This example will close the pipe after transferring 100MB at a speed of 3MB per second.

Comment current line
This should work with different locales. Another post reports

What is my ip?

Get a facebook likes quantity from CLI
Replace the with your URL, for example http://rublacklist.net/12348/ and it will show likes number

Monitor cpu in realtime.

Backup all MySQL Databases to individual files
Backups all MySQL databases to individual files. Can be put into a script that grabs current date so you have per day backups.


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