Install libfile-sync-perl by entering the following commands in the terminal:
sudo apt update sudo apt install libfile-sync-perl
Description:
Perl interface to sync() and fsync()
File::Sync provides Perl interfaces to the Unix sync(2) and POSIX.1b fsync(2) system calls. The fsync() call is needed for putting messages into qmail maildirs, and sync() is included for completeness.
Homepage: https://metacpan.org/release/File-Sync
Version: 0.11-2build4
Section: universe/perl