$PERLDB

@F The array @F contains the fields of each line read in when autosplit mode is turned on

shmget KEY,SIZE,FLAGS Calls the System V IPC function shmget. Returns the shared memory segment id, or

getpeername SOCKET Returns the packed sockaddr address of the other end of the SOCKET connection.

NAME

$EFFECTIVE_GROUP_ID

${^RE_TRIE_MAXBUF} Controls how certain regex optimisations are applied and how much memory they utilize. This value by default is 65536 which

$SUBSEP

cmp These operators are documented in perlop.

until These flow-control keywords are documented in Compound