numdiff
=======

A simple program to show numeric differences in log files.

numdiff
=======

A simple program to show numeric differences in log files.

Given the output of two runs of a program that generates line by line
output, such as sysctl on FreeBSD, calculate the differences of the
numeric output.

Example
=======

sysctl dev.igb.0 > before
sleep 10
sysctl dev.igb.0 > after
numdiff before after

If you want to see lines even if the difference is 0 use -z

numdiff -z before after

For neststat output you wind up with files where the separator is a
space and the number is at the start of the line.  For this case use
the --leading (aka -l) and --sep (aka -s) flags.

netstat -s -p tcp > before
sleep 10
netstat -s -p tcp > after
numdiff -l -s " " before after

Add a few examples to get people started
Add a few examples to get people started
