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Is there a way to grep the first occurence after a grep?

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Top Forums Shell Programming and Scripting Is there a way to grep the first occurence after a grep?
# 1  
Old 08-08-2011
Is there a way to grep the first occurence after a grep?
I have a text file:

firstname: John
lastname: Jay
age: 33

firstname: Amy
lastname: Jay
age: 12

firstname: Max
lastname: Jay
age: 50

Currently I have

Code:
first=`grep firstname file.txt | head -1`
age=`grep -A 2 $name file.txt | tail -1`

which works, but this is based on its position and not the actual age line This would not work if I inserted more lines in between firstname and age. Is there a better to grep the corresponding age?
# 2  
Old 08-08-2011
If "filename" is always before "age" then this should be enough:
Code:
grep -E '^(firstname|age):'

# 3  
Old 08-08-2011
That doesn't seem to work
# 4  
Old 08-08-2011
But for me it seems to work:
Code:
cat >INPUTFILE
firstname: John
lastname: Jay
age: 33

firstname: Amy
lastname: Jay
age: 12

firstname: Max
lastname: Jay
age: 50

grep -E '^(firstname|age):' INPUTFILE
firstname: John
age: 33
firstname: Amy
age: 12
firstname: Max
age: 50

# 5  
Old 08-08-2011
hmm, well I actually have spaces before firstname lastname and age...will that affect it?
# 6  
Old 08-08-2011
Code:
grep -E '^ *(firstname|age) *:'

# 7  
Old 08-08-2011
Cool Thanks...One more question, is there a way to grep a line, then grep another line with only matches after the first grep?

for example:

john
max
amy
david
amy
john
zach

I want to grep david, then grep john (but only search through the lines AFTER david)
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