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logtop - Online in the Cloud

Run logtop in OnWorks free hosting provider over Ubuntu Online, Fedora Online, Windows online emulator or MAC OS online emulator

This is the command logtop that can be run in the OnWorks free hosting provider using one of our multiple free online workstations such as Ubuntu Online, Fedora Online, Windows online emulator or MAC OS online emulator



logtop - Realtime log line rate analyser


logtop [OPTIONS]


logtop is a System Administrator tool analyzing line rate on stdin.
It reads on stdin and print a constantly updated result
displaying, in columns:
Line number, count, frequency, and the actual line.

$ tail -f FILE | logtop
is the friendly version of:
$ watch 'tail FILE | sort | uniq -c | sort -gr'


-s, --size=K
Only keep K lines in memory, instead of 10000.

-q, --quiet
Do not display a live view of the data, only display a top at exit.

-l, --line-by-line=K
Print result line by line, in a machine friendly format, K is the number of result
to print per line.

Line by line format is : [%d %f %s\t]*\n
%d : Number of occurences
%f : Frequency of apparition
%s : String (Control chars replaced by dots.

-i, --interval=K
Interval between graphical updates, in seconds. Defaults to 1.

-h, --help
Show summary of options.

-v, --version
Show version of program.


Here are some logtop usage examples.

tail -f cache.log | grep -o "HIT\|MISS" | logtop

Realtime hit / miss ratio on some caching software log file.

tail -f access.log | cut -d' ' -f1 | logtop -s 10000

Realtime most querying IPs on your server, as long as log lines in access.log starts with
the client IP.

tail -f access.log | cut -d' ' -f7 | logtop -s 10000

Realtime most requested web pages in a NCSA like log file.

cat auth.log | grep -v "CRON" | grep -o ": .*" | logtop -q -s 100000

Display a one-shot simple analyse of your auth.log.

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