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How to print all lines that has exactly 3 occurences of digit 4 using grep?

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# 1  
Old 01-30-2007
How to print all lines that has exactly 3 occurences of digit 4 using grep?
How to print all lines that has exactly 3 occurences of digit 4 using grep?

I am able to find the pattern if it is for atleast 3 occurences but with exactly 3 occurences? Can anybody help me on this.
# 2  
Old 01-30-2007
Code:
grep "^[^4]*4[^4]*4[^4]*4[^4]*$" file

# 3  
Old 01-30-2007
Another syntax using egrep :
Code:
egrep '^([^4]*4[^4]*){2}$'


Jean-Pierre.
# 4  
Old 01-31-2007
Thanks for the reply....
Anbu and Pierre, thank u very much for ur reply...its working...
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