Final answer:
You need appropriate permissions, typically being the owner or root, to use the 'chown' command to change file ownership in Unix-like systems. Execute the command with the new owner's username and the file's name, often using 'sudo' for the necessary privileges.
Step-by-step explanation:
Before you can change the ownership of a file using the chown command in a Unix-like operating system, you must have the appropriate permissions. Specifically, you need to be the current owner of the file or be a privileged user, typically the root user. To give ownership to another user, you would use the chown command followed by the username of the new owner and the file name.
For example, if you want to change the owner of a file named example.txt to a user named alice, you would execute the command sudo chown alice example.txt in the terminal. Note that the sudo command is used to execute the command with superuser privileges, which are often necessary for changing file ownership. Always ensure you have backed up any important files before changing ownership, as incorrect use of chown can affect file access.