=over =item alarm SECONDS X<alarm> X<SIGALRM> X<timer> =item alarm Arranges to have a SIGALRM delivered to this process after the specified number of wallclock seconds has elapsed. If SECONDS is no...

=over =item getsockopt SOCKET,LEVEL,OPTNAME X<getsockopt> Queries the option named OPTNAME associated with SOCKET at a given LEVEL. Options may exist at multiple protocol levels depending on the so...

=over =item shmread ID,VAR,POS,SIZE X<shmread> X<shmwrite> =item shmwrite ID,STRING,POS,SIZE Reads or writes the System V shared memory segment ID starting at position POS for size SIZE by attachin...

=over =item try =item catch =item finally These flow-control keywords related to the experimental C<try> feature are documented in L<perlsyn/"Try Catch Exception Handling">. =back

=over =item else =item elsif =item for =item foreach =item if =item unless =item until =item while These flow-control keywords are documented in L<perlsyn/"Compound Statements">. =back

=over =item BEGIN =item CHECK =item END =item INIT =item UNITCHECK These compile phase keywords are documented in L<perlmod/"BEGIN, UNITCHECK, CHECK, INIT and END">. =back

=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 AUTOLOAD This keyword is documented in L<perlsub/"Autoloading">. =back

=head1 NAME perlfaq9 - Web, Email and Networking =head1 VERSION version 5.20210520 =head1 DESCRIPTION This section deals with questions related to running web sites, sending and receiving email as ...

=over =item else =item elsif =item for =item foreach =item if =item unless =item until =item while These flow-control keywords are documented in L<perlsyn/"Compound Statements">. =back