=over =item shmget KEY,SIZE,FLAGS X<shmget> Calls the System V IPC function shmget. Returns the shared memory segment id, or L<C<undef>|/undef EXPR> on error. See also L<perlipc/"SysV IPC"> and the documentation for L<C<IPC::SysV>|IPC::SysV>. Portability issues: L<perlport/shmget>. =back