ops(3pm) | Perl Programmers Reference Guide | ops(3pm) |
ops - Perl pragma to restrict unsafe operations when compiling
perl -Mops=:default ... # only allow reasonably safe operations perl -M-ops=system ... # disable the 'system' opcode
Since the "ops" pragma currently has an irreversible global effect, it is only of significant practical use with the "-M" option on the command line.
See the Opcode module for information about opcodes, optags, opmasks and important information about safety.
Opcode, Safe, perlrun
2019-10-21 | perl v5.30.3 |