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Shell Programming and Scripting

Count records in a block

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# 1  
Old 11-14-2014
Count records in a block
Hi,

We have a file that has a structure like this:

Code:
H10 1 2 3
D10 1
D20 1 2 3
D20 3 4 5
D20 4 5 6
D10 2
D20 1 2 3
D20 3 4 5
D20 4 5 6
S10 10
H10 1 2 3
D10 1
D20 1 2 3
D20 3 4 5
D20 4 5 6
D10 2
D20 1 2 3
D20 3 4 5
D20 4 5 6
D20 7 8 9
S10 11

The S10 record holds the total count in the block. I want to build a process that would actually count the records in the block and validate it against the count mentioned in the block's S10 record. Can someone please help me with this?
# 2  
Old 11-14-2014
No attempts from your side?

What should your validation look like?
Code:
awk '{CNT++} /^S10/ {print "block " ($2==CNT?"":"in") "valid"; CNT=0} ' file

# 3  
Old 11-18-2014
Thank you RudiC. I am an amateur with awk and had no real idea where to start from. Your solution worked and I am trying to understand the logic behind it now. Thank you for your time
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