$ perldoc perlfunc | egrep '^ {7}readlink [A-Z]'
       readlink EXPR
 $ perldoc perlfunc | egrep '^ {7}lstat [A-Z]'
       lstat EXPR
 $ perldoc perlfunc | egrep '^ {7}do [A-Z]'
       do BLOCK
       do SUBROUTINE(LIST)
       do EXPR Uses the value of EXPR as a filename and executes the contents