logrotate

logrotate

Loop logging of standard inputs to several files

This is a command-line tool for circularly writing the output of other programs to some files via a pipe ("|").

Written using ulog's asynchronous fifo and extended headers for file loop writing.

Usage example

your_program | logrotate --file-path /tmp/example/log.txt --file-size=100000 --file-number=3

This will output the output of your program to /tmp/example/log.txt through logrotate, and limit the size and number of a single file according to the options.

Eventually there will be log.3.txt, log.2.txt, log.1.txt, log.txt in the /tmp/example directory.

These files will circulate in the order log.(N).txt -> log.(N+1).txt, and always keep at least 3 complete files.

The log.txt can be viewed in real time using tail -f /tmp/example/log.txt.

Command line options

> logrotate --help
Usage: logrotate [OPTION]...
Loop logging of standard inputs to several files

  -h, --help                   Print help and exit
  -V, --version                Print version and exit
      --file-path=path         File path to record log
      --file-size=size         Size of each file
      --file-number=number     Maximum number of files
      --fifo-size=size         Fifo size  (default='32768')
      --stdout                 Should print to stdout  (default=off)
      --flush-interval=second  Interval between flush  (default='0')

Command line options are generated by the gnu gengetopt tool with getopt. cmdline.c/h files are generated by the gengetopt < logrotate_getopt.ggo command.