find a pattern after a specific pattern

[realtest]

I want to go through a log file and find pattern1 and then a pattern2 only after pattern 1. e.g. I have this in my log file:

start time for the job: 12:50
.
.
.
howManyRecords: 2230
.
.
.
start time for the job: 13:30
.
.
.
howManyRecords: 1200
.
.
.
start time for the job: 14:10
.
.
.
howManyRecords: 1450
.
.
.

So for example I want to know howManyRecords was in 13:30.

I figured I grep for "start time for the job" and then only after that (and before the next occurence of that) grep for "howManyRecords". Is this a sane way?

Any better ideas to how go about this?

[alf55]

I want to go through a log file and find pattern1 and then a pattern2 only after pattern 1. e.g. I have this in my log file:

start time for the job: 12:50
.
.
.
howManyRecords: 2230
.
.
.
start time for the job: 13:30
.
.
.
howManyRecords: 1200
.
.
.
start time for the job: 14:10
.
.
.
howManyRecords: 1450
.
.
.

So for example I want to know howManyRecords was in 13:30.

I figured I grep for "start time for the job" and then only after that (and before the next occurence of that) grep for "howManyRecords". Is this a sane way?

Any better ideas to how go about this?

Doing this:

grep -E '^start time for the job|^howManyRecords' logfilename |  grep -A 1 '13:30' | tail -n 1