$ file /usr/bin/perl
/usr/bin/perl: PE32+ executable (console) x86-64 (stripped to external PDB), for MS Windows, 11 sections

$ file /usr/bin/perl > file_perl

$ file file_perl
file_perl: ASCII text

$ perle 'say -T "/usr/bin/perl" ? "text" : "binary"'
binary

$ perle 'say -T "file_perl" ? "text" : "binary"'
text

##</code><code>##

$ alias perle
alias perle='perl -Mstrict -Mwarnings -Mautodie=:all -MCarp::Always -E'