I made an another command line tool, the flog. flog is a fake log generator for common log formats such as apache-common, apache error and RFC3164 syslog: flog It is useful for testing some tasks which require log data like amazon kinesis log stream test. Flog currently supports following features: Completely random log generator Support , , and log format apache common apache combined apache error rfc3164 Support stdout, file and gzip type of logging And I have a plan for support below additional features for next versions. Contextual random log generator Statistical random log generator Support some other syslog formats Support custom log format (Most important feature, it will be added to flog version 1.0.0) I hope this could help someone who want to test something which require log data. Thanks.