shmctl - SysV shared memory operations

- NAME
- SYNOPSIS
- DESCRIPTION

# NAME

shmctl - SysV shared memory operations

# SYNOPSIS

shmctl ID,CMD,ARG

# DESCRIPTION

Calls the System V IPC function shmctl. You'll probably have to say

        use IPC::SysV;

first to get the correct constant definitions. If CMD is `IPC_STAT`, then ARG must be a variable that will hold the returned `shmid_ds` structure. Returns like ioctl: the undefined value for error, ```0` but true'' for zero, or the actual return value otherwise. See also SysV IPC in the perlipc manpage and `IPC::SysV` documentation.

shmctl - SysV shared memory operations