autoupdate command is used to update configure.in file in our Linux system to a newer Autoconf. Basically, it will update each TEMPLATE-FILE if given or 'configure.ac' file or 'configure.in' file to the syntax of the current version of Autoconf. The original files are backed up.
Syntax:
autoupdate [OPTION] ... [TEMPLATE-FILE...]Operation Modes:
- -h, --help : This is used to display the help and exit message.
sudo autoupdate -h

- -V, --version : This option is used to display the version number and exit.
sudo autoupdate -V

- -v, --verbose : This is used for the verbosely report processing.
sudo autoupdate -v #FILE NAME

- -d, --debug : This is used to not to remove the temporary files.
sudo autoupdate -d #FILE NAME

- -f, --force : This considers all the files obsolete.