👉 The default logging configuration file in Linux, typically located at `/etc/default/logging`, defines basic settings for logging within an application. - `--` represents a parameter that allows you to set or modify values defined in the global `.env` file. - `.=` is used to specify a variable as if it was a command (like `echo foo >> config.txt`). - `loglevel=debug` enables basic debug logging (e.g., prints "INFO" messages). - `loglevel=info` allows more detailed logging, including logs with lower level names. Logs with the same name but different level are merged into a single log file. - `loglevel=error` is for error logs with specific severity levels. Example configuration: ```bash # Default to debug logging if not set explicitly echo "DEBUG: Hello, World!" >> config.txt # Enable basic logging (info messages) echo "INFO: This is an informational message." >> config.txt # Enable more detailed logging with lower-level names, like 'warn' echo "WARNING: This is a warning message." # Merge logs into one large log file echo "INFO: This is a warning message." echo "INFO: More info..." # Disable all logging to suppress error messages and only print basic debug information echo "INFO: No logs printed." # Define custom log level for custom messages echo "DEBUG: Custom message" ``` This demonstrates the use of configuration variables with global options. The file `config.txt` is used to specify log levels and other configuration settings.
