Joins the separate strings of LIST into a single string with fields
separated by the value of EXPR, and returns that new string. Example:
$rec = join(':', $login,$passwd,$uid,$gid,$gcos,$home,$shell);
Beware that unlike split, join doesn't take a pattern as its
first argument. Compare split.
Site maintained by Jon Allen (JJ)
Documentation maintained by the Perl 5 Porters