Delete files and folders.

     rm [options] file ...

     unlink file

   -d   Attempt to remove folders.

   -f   Attempt to remove the files without prompting for confirmation,
		     regardless of the file's permissions.  If the file does not exist,
		     do not display a diagnostic message or modify the exit status
		     to reflect an error.

   -i   Request confirmation before attempting to remove each file.

   -P   Overwrite regular files before deleting them.	Files are
		     overwritten three times, first with the byte pattern 0xff,
		     then 0x00, and then 0xff again, before they are deleted.

   -R   Remove the entire file hierarchy rooted in each file argument.
		     (implies the -d  Delete folders).
        If the -i option is specified, the user is prompted for confirmation
	    	 before each directory's contents are processed (as well as before
	    	 the attempt is made to remove the directory).  If the user does not
		     respond affirmatively, the file hierarchy rooted in that directory
		     is skipped.

   -r   Equivalent to -R.

   -v   Be verbose when deleting files, showing them as they are removed.

   -W   Attempt to undelete the named files.  Currently, this option
		 can only be used to recover files covered by whiteouts.

   unlink   Unlink a file, only one argument, which must not be a directory
        can be supplied. Calls the unlink() function which removes the link
        named by path from its directory and decrements the link count of
        the file which was referenced by the link.

The rm utility removes symbolic links, not the files referenced by the links.

If an error occurs, rm exits with a value >0.


Delete all .jpg files in the current folder:
$ rm *.jpg

Delete the folder named "temp", and all its contents:
$ rm -R temp

Delete a protected folder:
you will be prompted for your password. hit return.

“The erase function in Disk Utility can erase an entire partition”


rm man page - Apple.com
cp - Copy files
find - Find and optionally Delete files
ls - List information about files
rmdir - Remove empty folder
srm - Securely remove files or directories
HT1526 - You can't empty the Trash or move a file to the Trash

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