perlfunc root <P> ops - Perl pragma to restrict unsafe operations when compiling <P> <HR> <P> <PRE> perl -Mops=:default ... # only allow reasonably safe operations </PRE> <P> <PRE> perl -M-ops=system ... # disable the 'system' opcode </PRE> <P> <HR> <P> Since the ops pragma currently has an irreversable global effect, it is only of significant practical use with the <CODE>-M</CODE> option on the command line. <P> See the [perlman:lib:Opcode|Opcode] module for information about opcodes, optags, opmasks and important information about safety. <P> <HR> <H1><A NAME="SEE_ALSO">SEE ALSO</A></H1> <P> <CODE>Opcode(3),</CODE> <CODE>Safe(3),</CODE> <CODE>perlrun(3)</CODE> <HR>