$ perl -v | head -2 | tail -1 This is perl 5, version 36, subversion 0 (v5.36.0) built for cygwin-thread-multi $ uname -a CYGWIN_NT-10.0 titan 3.2.0(0.340/5/3) 2021-03-29 08:42 x86_64 Cygwin