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[Help-bash] how to grep the last match out from a bunch of files


From: lina
Subject: [Help-bash] how to grep the last match out from a bunch of files
Date: Wed, 28 Dec 2011 01:03:33 +0800
User-agent: Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.9.2.24) Gecko/20111114 Icedove/3.1.16

Hi,

I have a bunch of files like a_*.txt

it contains many "step" in a_*.txt

$ cat a_1.txt
step
1
step
2
step
3
some lines appended here

$ cat a_2.txt
step
1
step
2
step
3
step
4
some other lines appended at the end


I wish to get the final step,
for a_1.txt it's 3
for a_2.txt it's 4
so output it's something like
a_1.txt 3
a_2.txt 4

I tried,
$ grep -A 1 -l step  a_*.txt
a_1.txt
a_2.txt

not work,

Thanks for any suggestions,

Best regards,




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