>perl -wde 1
Can't figure out your console, using stdin: No such file or directory

Loading DB routines from perl5db.pl version 1.77
Editor support available.

Enter h or 'h h' for help, or 'perldoc perldebug' for more help.

COLUMNS and LINES are set (120,30)
main::(-e:1):   1
  DB<1>