How do you delete a file in Linux?

In Linux, the command to delete a file is rm filename. This command stands for "remove" and is the standard method for removing files from the filesystem. When executed, rm will permanently delete the specified file without moving it to a trash or recycle bin, which means that you typically cannot recover it after deletion unless you have some form of backup in place.

The other options presented do not correspond to valid commands for file deletion in Linux. The command del is commonly associated with file deletion in DOS and Windows environments but is not recognized in Linux. Similarly, remove and delete are not recognized as valid commands in the Linux command line for file operations. Hence, understanding that rm is the correct command is crucial for effective file management in a Linux environment.