.\" -*- mode: troff; coding: utf-8 -*- .\" Automatically generated by Pod::Man 5.01 (Pod::Simple 3.43) .\" .\" Standard preamble: .\" ======================================================================== .de Sp \" Vertical space (when we can't use .PP) .if t .sp .5v .if n .sp .. .de Vb \" Begin verbatim text .ft CW .nf .ne \\$1 .. .de Ve \" End verbatim text .ft R .fi .. .\" \*(C` and \*(C' are quotes in nroff, nothing in troff, for use with C<>. .ie n \{\ . ds C` "" . ds C' "" 'br\} .el\{\ . ds C` . ds C' 'br\} .\" .\" Escape single quotes in literal strings from groff's Unicode transform. .ie \n(.g .ds Aq \(aq .el .ds Aq ' .\" .\" If the F register is >0, we'll generate index entries on stderr for .\" titles (.TH), headers (.SH), subsections (.SS), items (.Ip), and index .\" entries marked with X<> in POD. Of course, you'll have to process the .\" output yourself in some meaningful fashion. .\" .\" Avoid warning from groff about undefined register 'F'. .de IX .. .nr rF 0 .if \n(.g .if rF .nr rF 1 .if (\n(rF:(\n(.g==0)) \{\ . if \nF \{\ . de IX . tm Index:\\$1\t\\n%\t"\\$2" .. . if !\nF==2 \{\ . nr % 0 . nr F 2 . \} . \} .\} .rr rF .\" ======================================================================== .\" .IX Title "ops 3perl" .TH ops 3perl 2024-03-06 "perl v5.38.2" "Perl Programmers Reference Guide" .\" For nroff, turn off justification. Always turn off hyphenation; it makes .\" way too many mistakes in technical documents. .if n .ad l .nh .SH NAME ops \- Perl pragma to restrict unsafe operations when compiling .SH SYNOPSIS .IX Header "SYNOPSIS" .Vb 1 \& perl \-Mops=:default ... # only allow reasonably safe operations \& \& perl \-M\-ops=system ... # disable the \*(Aqsystem\*(Aq opcode .Ve .SH DESCRIPTION .IX Header "DESCRIPTION" Since the \f(CW\*(C`ops\*(C'\fR pragma currently has an irreversible global effect, it is only of significant practical use with the \f(CW\*(C`\-M\*(C'\fR option on the command line. .PP See the Opcode module for information about opcodes, optags, opmasks and important information about safety. .SH "SEE ALSO" .IX Header "SEE ALSO" Opcode, Safe, perlrun