How do you create a backup of a file?

Creating a backup of a file typically involves copying the original file to a new location or with a new name that indicates it is a backup. Using the command cp filename filename.bak accomplishes this by making an exact duplicate of the original file (filename) and naming the backup file as filename.bak. This way, if the original file is lost or corrupted, the backup is available for restoration.

The cp command stands for "copy," and it allows you to specify the source file and the destination file. In this case, the source is the original file, and the destination is the backup. The .bak extension is commonly used to denote that the file is a backup, making it clear for the user.

This method ensures the original file remains intact while providing a backup for safety. It's a straightforward and effective way to safeguard important files.