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Bug #3334 » iftop_parser.sh

Joshua Sign, 01/18/2019 06:17 PM

 
#!/bin/sh

# Usage
if [ $# -ne 1 ]; then
echo "Usage : $0 iface"
exit
fi

# files paths
pid_file=/var/run/iftop_$1.pid
cache_file=/var/db/iftop_$1.log
awk_script=/root/iftop_parse.awk

# Binaries paths
DATE=/bin/date
STAT=/usr/bin/stat
CUT=/usr/bin/cut
PS=/bin/ps
GREP=/usr/bin/grep
CAT=/bin/cat
RM=/bin/rm
IFTOP=/usr/local/sbin/iftop
AWK=/usr/bin/awk

# test if pid file exist
if [ -f $pid_file ]; then
# check how old is the file
curTS=`$DATE +%s`
pidTS=`$STAT -r $pid_file | $CUT -d " " -f 10`
# if more than 10 seconds,
# it must be a dead pid file (process killed?)
# or a stucked process that we should kill
if [ $(( curTS - pidTS )) -gt 10 ]; then
oldPID=`$CAT $pid_file`
# test if pid still exist
run=`$PS -p $oldPID | $GREP -F '$0'`
if [ "$run" != "" ]; then
kill -9 $oldPID
fi
$RM $pid_file
$RM $cache_file
exit
fi
if [ -f $cache_file ]; then
$CAT $cache_file
fi
exit
fi

echo -n $$ > $pid_file

$IFTOP -nNb -i $1 -s 1 -o 2s -t 2>> /dev/null | $AWK -f $awk_script > $cache_file.1
$CAT $cache_file.1 > $cache_file
$CAT $cache_file
$RM $pid_file
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