This is perl 5, version 22, subversion 1 (v5.22.1) built for x86_64-linux-gnu-thread-multi (with 58 registered patches, see perl -V for more detail) Copyright 1987-2015, Larry Wall Perl may be copied only under the terms of either the Artistic License or the GNU General Public License, which may be found in the Perl 5 source kit. Complete documentation for Perl, including FAQ lists, should be found on this system using "man perl" or "perldoc perl". If you have access to the Internet, point your browser at http://www.perl.org/, the Perl Home Page.

Usage: perl [switches] [--] [programfile] [arguments] -0[octal] specify record separator (\0, if no argument) -a autosplit mode with -n or -p (splits $_ into @F) -C[number/list] enables the listed Unicode features -c check syntax only (runs BEGIN and CHECK blocks) -d[:debugger] run program under debugger -D[number/list] set debugging flags (argument is a bit mask or alphabets) -e program one line of program (several -e's allowed, omit programfile) -E program like -e, but enables all optional features -f don't do $sitelib/sitecustomize.pl at startup -F/pattern/ split() pattern for -a switch (//'s are optional) -i[extension] edit <> files in place (makes backup if extension supplied) -Idirectory specify @INC/#include directory (several -I's allowed) -l[octal] enable line ending processing, specifies line terminator -[mM][-]module execute "use/no module..." before executing program -n assume "while (<>) { ... }" loop around program -p assume loop like -n but print line also, like sed -s enable rudimentary parsing for switches after programfile -S look for programfile using PATH environment variable -t enable tainting warnings -T enable tainting checks -u dump core after parsing program -U allow unsafe operations -v print version, patchlevel and license -V[:variable] print configuration summary (or a single Config.pm variable) -w enable many useful warnings -W enable all warnings -x[directory] ignore text before #!perl line (optionally cd to directory) -X disable all warnings Run 'perldoc perl' for more help with Perl.