msgctl - SysV IPC message control operations

- NAME
- SYNOPSIS
- DESCRIPTION

# NAME

msgctl - SysV IPC message control operations

# SYNOPSIS

msgctl ID,CMD,ARG

# DESCRIPTION

Calls the System V IPC function msgctl(2). 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 `msqid_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, `IPC::SysV`, and `IPC::Semaphore` documentation.

msgctl - SysV IPC message control operations