How to check if ping responded or not in a batch file

Question

I want to continuously ping a server and see a message box when ever it responds i e  server is currently down  I want to do it through batch file   I can show a message box as said here Show a popup message box from a Windows batch file  and can ping continuously by   ping  lt servername gt  -t   But how do I check if it responded or not

User · Answer

Here s something I found    pingtheserver ping  input    find  Reply   gt  nul if not errorlevel 1       echo server is online  up and running    else       echo host has been taken down wait 3 seconds to refresh     ping 1 1 1 1 -n 1 -w 3000  gt NUL     goto  pingtheserver      Note that ping 1 1 1 1 -n -w 1000  gt NUL will wait 1 second but only works when connected to a network

User · Answer

I ve seen three results to a ping - The one we  want  where the IP replies   Host Unreachable  and  timed out   not sure of exact wording    The first two return ERRORLEVEL of 0   Timeout returns ERRORLEVEL of 1   Are the other results and error levels that might be returned   Besides using an invalid switch which returns the allowable switches and an errorlevel of 1    Apparently Host Unreachable can use one of the previously posted methods  although it s hard to figure out when someone replies which case they re writing code for  but does the timeout get returned in a similar manner that it can be parsed   In general  how does one know what part of the results of the ping can be parsed   Ie  why might Sent and or Received and or TTL be parseable  but not host unreachable   Oh  and iSid  maybe there aren t many upvotes because the people that read this don t have enough points  So they get their question answered  or not  and leave   I wasn t posting the above as an answer  It should have been a comment but I didn t see that choice

User · Answer

The following checklink cmd program is a good place to start  It relies on the fact that you can do a single-shot ping and that  if successful  the output will contain the line   Packets  Sent   1  Received   1  Lost   0  0  loss     By extracting tokens 5 and 7 and checking they re respectively  Received  and  1    you can detect the success    setlocal enableextensions enabledelayedexpansion  echo off set ipaddr  1  loop set state down for  f  tokens 5 6 7    a in   ping -n 1  ipaddr    do       if  x  b    xunreachable   goto  endloop     if  x  a    xReceived  if  x  c    x1    set state up    endloop echo Link is  state  ping -n 6 127 0 0 1  gt nul  2 gt nul  goto  loop endlocal   Call it with the name  or IP address  you want to test   checklink 127 0 0 1 checklink localhost checklink nosuchaddress   Take into account that  if your locale is not English  you must replace Received with the corresponding keyword in your locale  for example recibidos for Spanish  Do a test ping to discover what keyword is used in your locale     To only notify you when the state changes  you can use    setlocal enableextensions enabledelayedexpansion  echo off set ipaddr  1 set oldstate neither  loop set state down for  f  tokens 5 7    a in   ping -n 1  ipaddr    do       if  x  a    xReceived  if  x  b    x1   set state up   if not  state    oldstate        echo Link is  state      set oldstate  state    ping -n 2 127 0 0 1  gt nul  2 gt nul  goto  loop endlocal     However  as Gabe points out in a comment  you can just use ERRORLEVEL so the equivalent of that second script above becomes    setlocal enableextensions enabledelayedexpansion  echo off set ipaddr  1 set oldstate neither  loop set state up ping -n 1  ipaddr   gt nul  2 gt nul  if not  errorlevel   0 set state down if not  state    oldstate        echo Link is  state      set oldstate  state    ping -n 2 127 0 0 1  gt nul  2 gt nul  goto  loop endlocal

User · Answer

The question was to see if ping responded which this script does   However this will not work if you get the Host Unreachable message as this returns ERRORLEVEL 0 and passes the check for Received   1 used in this script  returning Link is UP from the script  Host Unreachable occurs when ping was delivered to target notwork but remote host cannot be found   If I recall the correct way to check if ping was successful is to look for the string  TTL  using Find    echo off cls set ip  1 ping -n 1  ip    find  TTL  if not errorlevel 1 set error win if errorlevel 1 set error fail cls echo Result   error    This wont work with IPv6 networks because ping will not list TTL when receiving reply from IPv6 address

User · Answer

I have made a variant solution based on paxdiablo s post  Place the following code in Waitlink cmd   setlocal enableextensions enabledelayedexpansion  echo off set ipaddr  1  loop set state up ping -n 1  ipaddr   gt nul  2 gt nul  if not  errorlevel   0 set state down echo Link is  state  if   state     up      goto  endloop   ping -n 6 127 0 0 1  gt nul  2 gt nul  goto  loop  endloop endlocal   For example use it from another batch file like this  call Waitlink someurl com net use o    someurl com myshare   The call to waitlink will only return when a ping was succesful  Thanks to paxdiablo and Gabe  Hope this helps someone else

User · Answer

Simple version   for  F  delims    tokens 4   a IN   ping -n 2 127 0 0 1    findstr  R   Packets  Sent        DO    if  a EQU 2   echo Success   ELSE   echo FAIL        But sometimes first ping just fail and second one work  or vice versa  right  So we want to get success when at least one ICMP reply has been returned successfully   for  F  delims    tokens 4   a IN   ping -n 2 192 168 1 1    findstr  R   Packets  Sent        DO    if  a EQU 2   echo Success   ELSE   if  a EQU 1   echo Success   ELSE   echo FAIL

User · Answer

I hope this helps someone   I use this bit of logic to verify if network shares are responsive before checking the individual paths   It should handle DNS names and IP addresses  A valid path in the text file would be  192 168 1 2  folder  or  NAS  folder    echo off title Network Folder Check  pushd    dp0   00 cls  for  f  delims       A in  Files-to-Check txt  do set Server   A     setlocal EnableDelayedExpansion         ping -n 1  Server    findstr TTL   gt nul              if  errorlevel   1                    ping -n 1  Server    findstr  Reply from    findstr  time   gt nul                     if  errorlevel   1  echo Network Asset  Server  Not Found  amp  pause  amp  goto EOF                 EOF

User · Answer

You can ping without  -t  and check the exit code of the ping  It reports failure when there is no answer

User · Answer

bin bash logPath  pinglog txt   while true        do             refresh the timestamp before each ping attempt           theTime   date -Iseconds               refresh the ping variable           ping google com -n 1              if      -eq 0                then                  echo  theTime      connection is up   gt  gt   logPath             else                  echo  theTime      connection is down   gt  gt   logPath           fi             Sleep 1              echo           done

User · Answer

I know this is an old thread  but I wanted to test if a machine was up on my system and unless I have misunderstood  none of the above works if my router reports that an address is unreachable  I am using a batch file rather than a script because I wanted to  KISS  on pretty much any WIN machine  So the approach I used was to do more than one ping and test for  Lost   0  as follows  ping -n 2  pingAddr    find  I  Lost   0    if  errorlevel     0 goto OK   I haven t tested this rigorously but so far it does the job for me

[command-line] How to check if ping responded or not in a batch file

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