# echo $PERL5LIB
/home/henry/gitr/MAS/lib 

# prove ./t/8bit.t
./t/8bit.t .. Can't locate MAS::Global in @INC (@INC entries checked: /home/henry/gitr/MAS/lib /etc/perl (... others omitted)

# find /home/henry/gitr/MAS/lib -name Global.pm
/home/henry/gitr/MAS/lib/MAS/Global.pm  # It's in $INC[0]

# perl -c /home/henry/gitr/MAS/lib/MAS/Global.pm
/home/henry/gitr/MAS/lib/MAS/Global.pm syntax OK

##</code><code>##

# perldoc -l MAS::Global
/home/henry/gitr/MAS/lib/MAS/Global.pm

##</code><code>##

# perl -v
This is perl 5, version 38, subversion 2 (v5.38.2) built for x86_64-linux-gnu-thread-multi
(with 51 registered patches, see perl -V for more detail)

# cat /etc/os-release 
NAME="Linux Mint"
VERSION="22.2 (Zara)"
ID=linuxmint
ID_LIKE="ubuntu debian" ... etc