This simple logging system provides logging levels, file storage and file rotation. It also provides a command to display colorized logs.
By default, the logging output is printed to stdout.
Since clog provides a command to display logs with colors, the clog package must be installed with the command line instruction
$ go install github.com/chmike/clog/cmd/...@latestThis installs the package and the commands clogClr and testClog.
The command testClog outputs various logging messages to stdout. The first
character of a log line specifies the log level.
- F : Fatal error message causing the program to stop.
- E : Error message requiring human intervention to fix the problem.
- W : Warning message reporting an error that is automatically fixed by the program.
- I : Information message is for key milestones achievements.
- _ : (white space) It's just a normal information message.
- . : Debug message of level 0
-
- : Debug message of level 1
- = : Debug message of level 2
The command clogClr accept as optional argument a log file to read, otherwise it
will read logging messages from stdin. It will then colorize lines according to the
logging level. Executing the command testClog | clogClr will demonstrate its
effect.
A handy usage pattern when logging messages are written to files is to use the command
tail -F log_latest | clogClr. Where log_latest is the link file to the latest
log file created by the clog package.