Use the `mv` command
Syntax: `mv old_filename new_filename`
Example: `mv file1.txt file2.txt`
To rename a file in the same directory, change only the name part
To move and rename at the same time, include the destination path
Example: `mv file1.txt /home/user/documents/file2.txt`
Use `rename` for batch renaming if available
Example: `rename ‘s/old/new/’ *.txt`
Check the renamed file with `ls`