findstr

[olblue]

I have a simple string as follows:

findstr /c:"error" acstest.x >reason.txt

what I am attempting is once the error is found I need to step back 3 lines to show the reson for the error.

So my question is how can I step back 3 lines and display the reason code... please bear in mind that the file could have many errors and the file could be very large..

the foot print of the error is as follows:

reason =xxx

data

error

then it repeats over and over again.

 

[TonHu]

I've used grep for that:
(snip from a windows batchfile)

rem report 23 lines before a fail
%_UTIL%\grep -i -n -h --before-context=23 -E "failed|error" "%_LOG%" >>"%_LOG%.err"

Get grep using google