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Counting lines in a file using awk

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# 1  
Old 01-12-2014
Counting lines in a file using awk
I want to count lines of a file using AWK (only) and not in the END part like this awk 'END{print FNR}' because I want to use it.
Does anyone know of a way?
Thanks a lot.
# 2  
Old 01-12-2014
How do you mean, you want to use it?
# 3  
Old 01-12-2014
Is this what you are looking for?
Code:
awk '{A[FILENAME]++}END{for(k in A) print k,A[k]}'

# 4  
Old 01-13-2014
That doesn't really help me because I want to save it into a variable and use it before the END.
Any ideas?
# 5  
Old 01-13-2014
Try:
Code:
awk -v n_lines={wc -l < file} '{...}' file

# 6  
Old 01-13-2014
I want to find a way in awk only.. wc -l is bash.
# 7  
Old 01-13-2014
Read the file twice?
Code:
awk 'NR==FNR{n_lines=NR; next}{ .... } ' file file
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