powershell
Uses sajb to start a PowerShell background job that pings an IP host every 10 seconds.
Any changes in the host's Up/Down state is time-stamped and logged to a file.
Date/time stamps are logged in two formats: Unix and human-readable.
A while(1) loop repeats the test every 10 seconds by using the sleep command.
See the Sample Output for more detail.
I use this command to log Up/Down events of my Motorola SB6141 cable modem (192.168.100.1).
To end the logging, close the PowerShell window or use the "exit" command.
C:\Users\user>powershell Windows PowerShell (C) 2014 Microsoft Corporation. PS C:\Users\user> sajb {$ip="192.168.100.1";$old=0;while(1){$up=test-connection -quiet -count 1 $ip;if($up-ne$old){$s=(date -u %s).split('.')[0]+' '+( date -f s).replace('T',' ')+' '+$ip+' '+$(if($up){'Up'}else{'Down'});echo $s|out-file -a $home\ping.txt;$old=$up}sleep 10}} Id Name PSJobTypeName State HasMoreData Location Command -- ---- ------------- ----- ----------- -------- ------- 1 Job1 BackgroundJob Run True localhost $ip="192.168.100.1"... PS C:\Users\user> more $home\ping.txt 1451306247 2015-12-28 12:37:27 192.168.100.1 Up 1451306258 2015-12-28 12:37:38 192.168.100.1 Down 1451306263 2015-12-28 12:37:43 192.168.100.1 Up PS C:\Users\user>
Any thoughts on this command? Does it work on your machine? Can you do the same thing with only 14 characters?
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