Get switch bandwidth exceeding threshold on alarm

Requirements: Get the current bandwidth of the switch   if the threshold is exceeded, send a short message alarm   mainly use the company's SMS interface and Snmpwalk command to achieve a basic Environment 1, version cat /etc/debian_version  7.82, kernel uname -r3.2.0-4-amd643, IP (eth0) 10.1.10.185 Second, the specific script #!/bin/bash#-------------------------------------- ------------#Author: jimmygong#email:[email protected] #FileName: shcnc.sh#function: Gets the switch bandwidth exceeds the threshold to send a short message  # version:1.0  #Created: 2015-11-12#--------------------------------------------------#apt-get -y  install snmp curl links or yum -y install curl links  net-snmp-utilsfunction get  () {    hostip= ' 111.111.111.111 '      snmpc= "222222222222"     hostport= "1111"     timed= " "    in1=$ (snmpwalk -ov -v 2c -c  $snmpc   $hostip  if-mib:: Ifhcinoctets. $hostport)     in1=${in1#*: }    out1=$ (snmpwalk  -Ov -v 2c -c  $snmpc  $hostip  if-mib::ifhcoutoctets $hostport)     out1=${out1#*: }     sleep  $timed     in2=$ (snmpwalk -ov -v 2c -c   $SNMPC   $hostip  if-mib::ifhcinoctets. $hostport)     in2=${in2#*: }     out2=$ (snmpwalk -ov -v 2c -c  $snmpc   $hostip  if-mib: : Ifhcoutoctets. $hostport)     out2=${out2#*: }    in=$ (($in 2-$in 1 ) *8/1000000/$timed))     out=$ ((($out 2-$out 1) *8/1000000/$timed))      echo  $in: $out}function send  ()  {    g=$ (GET)     i= ${g%:*}    e=${g#*:}    c=95    telgroup= ( 11111111111)     sign= "222222222222222"     if [[  $i  -gt   $c  ]]   &Nbsp;then        msg= "Shcnc%20ingress%20rate:%20${i}mbps%20>%20$c"         for tt in ${telgroup[@]}         do            /usr/ bin/links -dump  "http://111.111.111.111/aaa/back.send?mobile= $tt &msg= $msg &sms_sign= $sign"         done    fi    if  [[  $e  -gt  $c  ]]    then         msg= "Shcnc%20egress%20rate:%20${e}mbps%20>%20$c"         for  tt in ${telgroup[@]}        do             /usr/bin/curl  "Http://111.111.111.111/aaa/back.send? mobile= $tt &msg= $msg &sms_sign= $sign "        done    fi}sendexit 0 

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Get switch bandwidth exceeding threshold on alarm