To rename a directory on a Unix or Linux system, you can use the mv command.
To use the mv command, you can type mv followed by the source directory and the destination directory.
For example, to rename the directory /tmp/olddir to /tmp/newdir, you can use the following command:
mv /tmp/olddir /tmp/newdir
This will rename the directory /tmp/olddir to /tmp/newdir.
The mv command can also be used to move a directory to a different location. For example, to move the directory /tmp/olddir to the root directory, you can use the following command:
mv /tmp/olddir /
This will move the directory /tmp/olddir to the root directory.
The mv command has several options that allow you to customize the behavior of the command. For example, you can use the -f option to force the move or rename operation, or the -i option to prompt for confirmation before overwriting an existing file or directory.
For more information about the mv command and its options, you can consult the documentation for your specific Unix or Linux system.