uc EXPR uc Returns an uppercased version of EXPR. This is the internal function implementing the

getlogin This implements the C library function of the same name, which on most systems returns the current login from /etc/utmp, if

next LABEL next EXPR next The

dbmclose HASH [This function has been largely superseded by the

elseif The "else if" keyword is spelled elsif in Perl. There's no elif

lock THING This function places an advisory lock on a shared variable or referenced object contained in THING until the lock goes out

setgrent

goto LABEL goto EXPR goto &NAME The

fileno FILEHANDLE Returns the file descriptor for a filehandle, or undefined if the filehandle is not open. If there is no real file descriptor

readpipe EXPR readpipe EXPR is executed as a system command. The collected standard output of the command