Perl Language Unicode Command line switches for one-liners
Example
Enable utf8 pragma
In order to enable utf8 pragma in one-liner, perl interpreter should be called with -Mutf8 option:
perl -Mutf8 -E 'my $人 = "human"; say $人'
Unicode handling with -C switch
The -C command line flag lets you control Unicode features. It can be followed by a list of option letters.
Standard I/O
I-STDINwill be in UTF-8O-STDOUTwill be in UTF-8E-STDERRwill be in UTF-8S- shorthand forIOE, standard I/O streams will be in UTF-8
echo "Ματαιότης ματαιοτήτων" | perl -CS -Mutf8 -nE 'say "ok" if /Ματαιότης/'
Script's arguments
A- treats@ARGVas an array of UTF-8 encoded strings
perl -CA -Mutf8 -E 'my $arg = shift; say "anteater" if $arg eq "муравьед"' муравьед
Default PerlIO layer
i- UTF-8 is the default PerlIO layer for input streamso- UTF-8 is the default PerlIO layer for output streamsD- shorthand forio
perl -CD -Mutf8 -e 'open my $fh, ">", "utf8.txt" or die $!; print $fh "개미 조심해"'
-M and -C switches may be combined:
perl -CASD -Mutf8 -E 'say "Ματαιότης ματαιοτήτων\n"';
