srand EXPR srand Sets and returns the random number seed for the

rand EXPR rand Returns a random fractional number greater than or equal to

tie VARIABLE,CLASSNAME,LIST This function binds a variable to a package class that will provide the implementation for the variable. VARIABLE

alarm SECONDS alarm Arranges to have a SIGALRM delivered to this process after the specified number of wallclock

pop ARRAY pop EXPR pop Pops and returns the last value of the array, shortening

for foreach These flow-control keywords are documented in

caller EXPR caller Returns the context of the current pure perl subroutine call. In scalar context, returns

getservent

getgrent

sethostent STAYOPEN