Install libfilehandle-unget-perl by entering the following commands in the terminal:
sudo apt update sudo apt install libfilehandle-unget-perl
Description:
Perl module that allows ungetting of multiple bytes
FileHandle::Unget is a Perl Module that is a drop-in replacement for the standard FileHandle module. It allows more than one byte to be placed back on the input. It also provides ungets to unget a string, which is useful if the filehandle refers to a stream for which you can't just seek() backwards.
Homepage: https://metacpan.org/release/FileHandle-Unget
Version: 0.1628-1
Section: universe/perl