number without quotes
quoted number
seek() on unopened filehandle at ./1.pl line 21.
Report error - Bad file descriptor at ./1.pl line 21.
reference without quotes
quoted reference
seek() on unopened filehandle at ./1.pl line 21.
Report error - Bad file descriptor at ./1.pl line 21.
string without quotes
Argument "abc" isn't numeric in seek at ./1.pl line 19.
quoted string
seek() on unopened filehandle at ./1.pl line 21.
Report error - Bad file descriptor at ./1.pl line 21.
object without quotes
quoted object
seek() on unopened filehandle at ./1.pl line 21.
Report error - Bad file descriptor at ./1.pl line 21.