Using the warn() Function

The warn() function has the same functionality that die() does except the script is not exited. This function is better suited for non-fatal messages like low memory or disk space conditions.

The next example tries to change to the /text directory. If the connect fails, the consequences are not fatal because the files can still be written to the current directory.

chdir('/text') ||
   warn("Using current directory instead of /text, warning");

This line of code displays

Using current directory instead of /text, warning at test.pl line 2.

if the /text directory does not exist. As with die(), you can eliminate the script name and line number by ending your error message with a newline. You could also use the $! variable to display the system error message.