Exists
The file.exists function is used to check if a file exists on the filesystem. This function returns true if a file exists, or false if the file does not exist.
Syntax
%file.exists(string)
Example 1. Checking if a file exists
if %file.exists("/var/log/radius.log") {
# do things...
}
File access restriction
Files accessed in this function are restricted by the limit files section in the main security configuration. If present in radiusd.conf, only files in the paths listed can be accessed.