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  1. or download this
    [me@host bin]$ perl -we 'open STDERRIN,"+<&STDERR" or die $!; my $line
+ = <STDERRIN>;  print STDERRIN "YAY!!! $line";'
asdfasf
YAY!!! asdfasf
[me@host bin]$
  2. or download this
    ls -l /proc/self/fd/
  3. or download this
    ls -l /proc/self/fd/ < /dev/null
ls -l /proc/self/fd/ | cat
ls -l /proc/self/fd/ 2> /dev/null   #redrect STDERR
  4. or download this
    open TTY, ">/dev/tty" or die "Couldn't open /dev/tty $!";