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Find string1, when true find string2 in reverse direction

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# 1  
Old 09-02-2018
Find string1, when true find string2 in reverse direction


This is a bit complicated for me.
My scenario in MyFile:

Search string1,
When string1 is found, grep the line containing string1, go back over that line in upward direction and grep the first line containing string2.

Here is an example:


His email address
testtt 11223344
His email address
testtt 55667788
His email address

string1: testtt
string2: @

Expected output:
His email address
test 11223344
His email address
test 55667788

Thanks in advance
# 2  
Old 09-02-2018
You can solve this with sed or awk or perl or shell buitins.
Please show your attempts!
# 3  
Old 09-02-2018
Hello MadeInGermany,
I read that question mark is used for reverse direction search but I have no more idea.
I just searched on multiple boards with "multiple string search" keyword for this but no luck.

Kind regards
# 4  
Old 09-02-2018
Your directions didn't say anything about changing string1 to the string test in the output to be produced??? And, if we do the grep's in the order you specified, the lines containing string1 should be printed before the lines containing string2. Why isn't the desired output:
testtt 11223344
His email address
testtt 55667788
His email address

? Is your sample output wrong or are your directions wrong?
# 5  
Old 09-02-2018
Hello Don,
That output is also acceptable, no worries.

Kind regards
# 6  
Old 09-02-2018
You didn't mention your OS nor grep version, so chances are this will not work for you:
grep "@\|testtt" Myfile | grep -B1 testtt
His email address
testtt 11223344
His email address
testtt 55667788

# 7  
Old 09-02-2018
Dear Rudic,
Thanks for your warning.

Ubuntu 14.04
grep (GNU grep) 2.16

Kind regards

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