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The Linux Command Line
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Notes:
Remove a directory
To delete a directory, go its location and type:
$ rm -r -f <directory name>
This uses the “rm” command we used above, but the extra switches tell it
to remove the directory, all its contents and also any sub-directories and
their contents.
The “-r” means “recursive”, which – in the case of a directory – removes the entire
directory and all its contents, including sub-directories. Do be very sure that you
mean this before using it – there’s no “undo” option!
The “-f” switch indicates that the action is “forced” – that is, the program will
remove write-protected files without prompting. This is also dangerous, so be
very careful when using this as well.
A safer, but less powerful, option is to use the “rmdir” command:
$ rmdir <directory name>
This will also delete directories, but only if they’re empty.
rmdir
Remove (delete) one or more directories in the current location,
provided they are empty.
Connect to a device or filing system
The “mount” command allows you to connect a Unix system to external devices.
There is no “C” drive, as in Windows. What happens in Linux is that a device is
“mounted” somewhere in the filing system. When you navigate to that place, the
items offered by the device will appear at that point.
This is a complex command. The switches, parameters and target of the mount
command will vary according to the protocol of the system being mounted. Some
things will “auto-mount. This is why, when you plug an SD card into a modern
Linux system, the filing system will automatically pick it up.
Manual mounting requires a “mount point”. That means a directory that will be
filled with the mounted device when it is mounted. Often, this is in the directory
/mnt/” somewhere. Generally, before mounting new media, you must first ensure
that there is a mount point. If there isn’t, then you must create a directory at the
point needed: for instance...
$ mkdir /mnt/netfolder
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