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