Generally, Depending on the type of error, there are variables that are
Error Indicators, each of these correspond to errors detected by:
- The Perl Interpreter.
- C Library.
- Operating System.
- External Programs.
These variables can be accessed many ways (they have more than one form), for example you can use $! or $OS_ERROR or $ERRNO to read the current value of the C error number in numeric context also you can use $! in string context to yield the corresponding system error string..
perlvar has valuable information about these different variables.
Excellence is an Endeavor of Persistence.
Chance Favors a Prepared Mind.
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