If you want to work with files that have spaces or special characters in the filenames, you may have to use quotes. For instance, if you wanted to create a file that has a space in the name, you could use the following:
Normally, the shell uses spaces to determine the end of each argument.
\) before a special character.
The example below
will rename a file with a space in the name, changing the space to an
mv a\ file a_file
Using the same techniques, you can deal with any character in a filename:
mv '$a' a
At worst, a space in a filename makes the filename difficult to use as an
Other characters are dangerous to use in a filename.
In particular, using
in a filename is playing with fire. If you want to delete the file
you may end up deleting more than the single file.