Njmon4LinuxCommandLine

njmon for Linux Command Line and njmon -? output
$ ./njmon_linux -h
/njmon: help information. Version:30@16/07/2019

- Performance stats collector outputing JSON format. Default is stdout
- Core syntax:     /usr/local/bin/njmon -s seconds -c count
- JSON style:      -M  (default) or older style -S or -O
- File output:     -m directory -f
- njmon collector output: -i host -p port -X secret
- Other options: -?

        -s seconds : seconds between snapshots of data (default 60 seconds)
        -c count   : number of snapshots (default forever)

        -S         : Single level output format - section names form part of the value names
        -M         : Multiple level output format - section & subsection names (default)
        -O         : Old Multiple level output format - like -M but identity before samples

        -m directory : Program will cd to the directory before output
        -f         : Output to file (not stdout) to two files below
                   : Data:  hostname_<year><month><day>_<hour><minutes>.json
                   : Error: hostname_<year><month><day>_<hour><minutes>.err
        -k         : Read /tmp/njmon.pid for a running njmon PID & if found running then this copy exits
        -P         : Add process stats (take CPU cycles and large stats volume)
        -I percent : Set ignore proceiss percent threshold (default 0.01%)
        -? or -h   : This output and stop
        -d         : Switch on debugging
Push data to collector: add -h hostname -p port
        -i ip      : IP address or hostname of the njmon central collector
        -p port    : port number on collector host
        -X secret  : Set the remote collector secret or use shell NJMON_SECRET

Examples:
    1 Every 5 mins all day
        /home/nag/njmon -s 300 -c 288 -f -m /home/perf
    2 Piping to data handler using half a day
        /home/nag/njmon -s 30 -c 1440 | myprog
    3 Use the defaults (-s 60 forever) and save to a file
        ./njmon > my_server_today.json
    4 Crontab entry
        0 4 * * * /home/nag/njmon -s 300 -c 288 -f -m /home/perf
    5 Crontab - hourly check/restart remote njmon, pipe stats back & insert into local DB
        * 0 * * * /usr/bin/ssh nigel@server /usr/lbin/njmon -s 300 -c 288 | /lbin/injector
    6 Crontab - for pumping data to the njmon central collector
        * 0 * * * /usr/local/bin/njmon -s 300 -c 288 -i admin.acme.com -p 8181 -X SECRET42
$