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Top Forums Shell Programming and Scripting Extracting Latency, Loss and Jitter from PING responses. Post 302264465 by fpmurphy on Thursday 4th of December 2008 03:52:01 AM
Old 12-04-2008
If you are using ksh93, you can parse the file using ksh93 builtins
Code:
command exec 3< datafile

eof=$(3<#((EOF)))
if (( $(3<#((0))) != 0 ))
then
  print "not at start of file"
  exit 1
fi

while (( $(3<#((CUR))) < $eof ))
do
   3<#'PING*'
   read -A -u3 arr1
   3<#'*packet loss*'
   IFS=" %" read -A -u3 arr2
   IFS=" /" read -A -u3 arr3
   printf "%s %6.3f %3d %6.3f\n" ${arr1[1]} ${arr3[6]} ${arr2[5]} ${arr3[9]}
done

Output from sample data file supplied
Code:
Host11  7.400   0 17.946
Host12 43.804   0  9.359
Host13 40.237   0 10.433
Host14 36.053   0 20.642

 

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disown(1)							   User Commands							 disown(1)

NAME
disown - ksh93 built-in function to disassociate a job with the current shell SYNOPSIS
disown [job ...] DESCRIPTION
The ksh93 disown command prevents the current shell from sending a HUP signal to each of the specified jobs when the current shell termi- nates a login session. If job is omitted, disown sends the HUP signal to the most recently started or stopped background job. OPERANDS
The following operands are supported: job Specifies the job or jobs on which disown operates. Specify job as one of the following: number Refers to a process ID. -number Refers to a process group ID. %number Refers to a job number. %string Refers to a job whose name begins with string. %?string Refers to a job whose name contains string. %+ or %% Refers to the current job. %- Refers to the previous job. EXIT STATUS
0 Successful completion. >0 One or more specified jobs does not exist. EXAMPLES
Example 1 Disowning a Job The following example disowns job 1: example% disown %1 AUTHORS
David Korn, dgk@research.att.com ATTRIBUTES
See attributes(5) for descriptions of the following attributes: +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |Availability |SUNWcsu | +-----------------------------+-----------------------------+ |Interface Stability |Uncommitted | +-----------------------------+-----------------------------+ SEE ALSO
bg(1), jobs(1), ksh93(1), wait(1), attributes(5) SunOS 5.11 18 Apr 2007 disown(1)
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