vit -- Vital Statistics Monitoring Command

vit.sh

cat <<END >/var/wwwext/vit.cgi
# vit: Vital Stats # Planiwa 2009-11-27

INTERFACES="ppp0 eth1"; HALF=500; DIVI=1000; COUNTWHAT="bytes" # Defaults
while [ $# -gt 0 ]
do
	case "$1" in
	-*elp|-\?|-h) echo "Syntax		vit [-h] [-t] [-k] [-p] [-d] [-dir] [-all] [Interface ...]
-h		This help
-t		Show title headers
-k		Show kiloBytes instead of MegaBytes, or kiloPackets instead of Packets
-p		Packets instead of Bytes
-d		Prepend Datestamp
-s SLEEPSEC	Repeat every SLEEPSEC seconds, until interrupted
-l              Send output to syslog
-dir DIR	Write output to file HHMM in directory DIR.
		NB: Use CRU in INIT script to control exact Minute!  (Scheduler is unpredictable.)
		eg: cru a Vit '01,16,31,46 * * * * /jffs/vit -d -p -dir /jffs/vitlog'
-all		Show all Interfaces
Interface ...	one or more interfaces.  Default: $INTERFACES
" ;exit;;
	-t) echo "LANClients Connections TotMem-Free Load Processes FWUptime WANUptime SysUptime Interface:Tot-Up ...";;
    -k) HALF=0; DIVI=1; KILO="kilo";; ### meaning of kilo is reversed for packets and bytes
    -p) COUNTWHAT="packets";;
    -all) INTERFACES="$(ifconfig|awk '/Link/{print$1}')";;
    -dir) DIR=$2; mkdir -p $DIR; HHMM=$(date '+%H%M'); shift;; ### write to file HHMM in $DIR
    -d) DATESTAMP=Y;;
    -l) LOGGER=Y;;
    -s) SLEEPSEC=$2;shift;;
    -s*) SLEEPSEC=${1#-s};;
	-*) echo "vit: unrecognized paramter: $1"; set -- SHIFT -h;;
    *)  INTERFACES="$*"; break ;;
    esac
    shift
done
case $KILO$COUNTWHAT in
kilopackets) HALF=500; DIVI=1000;;
packets) HALF=0; DIVI=1;;
esac

while :;do
if [ "$DATESTAMP" != "" ];then DATESTAMP="$(date '+%y%m%d_%H:%M:%S') "; fi

set -- $(cat /proc/meminfo); set -- $((${10}+${13})) ${10}; F=${1%???}-${2%???} # kB
#F="$((${22}+${31}))-${22}"KiB

if [ -r /proc/sys/net/ipv4/ip_conntrack_count ]
then CON=$(cat /proc/sys/net/ipv4/ip_conntrack_count) ### Thanks, Teddy Bear!
else CON=$(cat /proc/net/ip_conntrack | wc -l)        ### This is very costly
fi

USE=$(arp | wc -l) # set -- $(wl assoclist); USE=$(($#/2))

set -- $(cat /proc/loadavg)
P=$4
LOADL=${1%.*}; LOADL=${LOADL#0}; LOADR=${1#*.}; LOADR=${LOADR#0};
LOADR=$(((LOADR+5)/10)); case $LOADR in 10)LOADR=9;;esac; LOAD=$LOADL.$LOADR

X="";Y="";Z=""; for IF in $INTERFACES;do
  set -- $(ifconfig $IF |grep "$COUNTWHAT:")
  ### Beware: counters are reset at 4.3 GB (mod 2^32) ###
  case $# in
  0) Z="$Z $IF:Down";;
  *) case $COUNTWHAT in
     bytes)   RX=$2; TX=$6;;
     packets) RX=$2; TX=$8;;
     esac
     case $IF in ## these need some work, especially with unusual hardware or setups such as MLPPP
     ppp0|eth0|vlan1) X="$X $IF ${RX#*:} ${TX#*:}";; ## Up from router
     eth1|br0|*)      X="$X $IF ${TX#*:} ${RX#*:}";; ## Down from router
     esac;;
  esac
done
set -- $X; for X in $*;do
  case $X in
  [0-9]*) case $KILO$COUNTWHAT in
          *bytes)      if [ ${#X} -le 3 ];then X=0;else X=${X%???};fi; Y="$Y $(((X+$HALF)/$DIVI))";;
          *packets) Y="$Y $(((X+$HALF)/$DIVI))";;
          esac;;
  *)      Y="$Y $X";;
  esac
done
set -- $Y
while [ $# -ge 3 ];do
  Z="$Z $1:$(($2+$3))-$3"
  shift 3
done

NOWSEC=$(date '+%s')

BOOSEC=$(cat /proc/stat|grep btime); BOOSEC=${BOOSEC#* }
BOOSECS=$((NOWSEC-BOOSEC))
D=$((BOOSECS/86400));if [ $D -ge 2 ];then BOOTIME=${D}d;else
H=$((BOOSECS/3600));if [ $H -ge 2 ];then BOOTIME=${H}h;else
M=$((BOOSECS/60));if [ $M -ge 2 ];then BOOTIME=${M}m;else
BOOTIME=${BOOSECS}s;fi;fi;fi
#BOODATE=$(cat /proc/stat|grep btime|awk '{print strftime("%m%d.%H:%M",$2)}')

WANSEC=$(date -r /var/lib/misc/wantime '+%s')
if [ $WANSEC -lt 999999 ];then WANSECS=$WANSEC;WANPRE='+';else WANSECS=$((NOWSEC-WANSEC));WANPRE="";fi
D=$((WANSECS/86400));if [ $D -ge 2 ];then WANTIME=${D}d;else
H=$((WANSECS/3600));if [ $H -ge 2 ];then WANTIME=${H}h;else
M=$((WANSECS/60));if [ $M -ge 2 ];then WANTIME=${M}m;else
WANTIME=${WANSECS}s;fi;fi;fi
#WANDATE=$(date -r /var/lib/misc/wantime '+%y%m%d.%H:%M')

if [ -r /tmp/script_fire.sh ];then
FIRSEC=$(date -r /tmp/script_fire.sh '+%s')
if [ $FIRSEC -lt 999999 ];then FIRSECS=$FIRSEC;FIRPRE='+';else FIRSECS=$((NOWSEC-FIRSEC));FIRPRE="";fi
D=$((FIRSECS/86400));if [ $D -ge 2 ];then FIRTIME=${D}d;else
H=$((FIRSECS/3600));if [ $H -ge 2 ];then FIRTIME=${H}h;else
M=$((FIRSECS/60));if [ $M -ge 2 ];then FIRTIME=${M}m;else
FIRTIME=${FIRSECS}s;fi;fi;fi
else FIRTIME="?"
fi

while [ ${#CON} -lt 3 ];do CON=" $CON"; done
OUTLINE="$DATESTAMP$USE $CON $F $LOAD $P $FIRPRE$FIRTIME $WANPRE$WANTIME $BOOTIME ${Z# }"
if [ "$DIR" != "" ];then echo "VIT: $OUTLINE" > $DIR/$HHMM; exit; fi
if [ "$LOGGER" != "" ];then logger -p info -t VIT "$OUTLINE"; exit; fi
case "$(cat /proc/$PPID/cmdline)" in
*/tmp/sc[hr]*.sh) logger -p info -t VIT "$OUTLINE" ;; # Scheduler / Adm Script
*)                echo             "VIT: $OUTLINE" ;; # Interactive Shell
esac
if [ "$SLEEPSEC" == "" ];then exit; else sleep $SLEEPSEC; fi
done
END