=over =item and =item cmp =item eq =item ge =item gt =item isa =item le =item lt =item ne =item not =item or =item x =item xor These operators are documented in L<perlop>. =back

=over =item getpwnam NAME X<getpwnam> X<getgrnam> X<gethostbyname> X<getnetbyname> X<getprotobyname> X<getpwuid> X<getgrgid> X<getservbyname> X<gethostbyaddr> X<getnetbyaddr> X<getprotobynumber> X<...

=over =item system LIST X<system> X<shell> =item system PROGRAM LIST Does exactly the same thing as L<C<exec>|/exec LIST>, except that a fork is done first and the parent process waits for the chil...

=over =item kill SIGNAL, LIST =item kill SIGNAL X<kill> X<signal> Sends a signal to a list of processes. Returns the number of arguments that were successfully used to signal (which is not necessar...

=over =item semctl ID,SEMNUM,CMD,ARG X<semctl> Calls the System V IPC function L<semctl(2)>. You'll probably have to say use IPC::SysV; first to get the correct constant definitions. If CMD is IPC_...

=over =item send SOCKET,MSG,FLAGS,TO X<send> =item send SOCKET,MSG,FLAGS Sends a message on a socket. Attempts to send the scalar MSG to the SOCKET filehandle. Takes the same flags as the system ca...

=over =item msgctl ID,CMD,ARG X<msgctl> Calls the System V IPC function L<msgctl(2)>. You'll probably have to say use IPC::SysV; first to get the correct constant definitions. If CMD is C<IPC_STAT>...

=over =item getpgrp PID X<getpgrp> X<group> Returns the current process group for the specified PID. Use a PID of C<0> to get the current process group for the current process. Will raise an except...

=over =item listen SOCKET,QUEUESIZE X<listen> Does the same thing that the L<listen(2)> system call does. Returns true if it succeeded, false otherwise. See the example in L<perlipc/"Sockets: Clien...

=head1 NAME perlfaq7 - General Perl Language Issues =head1 VERSION version 5.20210520 =head1 DESCRIPTION This section deals with general Perl language issues that don't clearly fit into any of the ...