'scp' Outside of Userspace

When performing for the first time a command such as scp ./src user@url:dir, one immediately learns that the directory after the colon is relative to "user's" home folder.

 So one assumes that if you write scp ./src user@url:/dir, the string "/dir" will be concatenated to "user's" home directory path and therefore still refer to the contents of the home directory.

 However this isn't the case; "/dir" will refer to "dir" at the file system's root.

 So scp can be used to modify any part of a file system so long as the permissions are right.

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