Logfile
In computing, a logfile (or log file, or simply log) is a computer file which contains a record of events and messages, typically with the time and date of each event or message.
Description
A logfile is a file that records either events that occur in an operating system or other software runs, or messages between different users of a communication software.
Logging is the act of keeping a log.
In the simplest case, messages are written to a single logfile.
A transaction log is a file (i.e., log) of the communications (i.e., transactions) between a system and the users of that system, or a data collection method that automatically captures the type, content, or time of transactions made by a person from a terminal with that system.
For Web searching, a transaction log is an electronic record of interactions that have occurred during a searching episode between a Web search engine and users searching for information on that Web search engine.
Many operating systems, software frameworks, and programs include a logging system. A widely used logging standard is syslog, defined in Internet Engineering Task Force (IETF) RFC 5424).
The syslog standard enables a dedicated, standardized subsystem to generate, filter, record, and analyze log messages. This relieves software developers of having to design and code their own ad hoc logging systems.
