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How to pattern match on digits and then increment?

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# 1  
Old 08-11-2005
How to pattern match on digits and then increment?
I have a log file that ends in a ".xxx" where xxx are digits but I don't necessarily know what digits they are. The log file rotates automatically and is auto-incrementing - starting at .001.

So the example would be:

file-name.005

If the file ends in .005 and the log rotates, it logically rotates to "file-name.006". But, not knowing the original number it could be auto-incrementing to any number.
So I am hoping someone can tell me what tools to use and how to 'know' that the log file ends in 005 and from this pattern, know that the next log file must end in 006 (vs. just the digit 6).

Thanks in advance!
# 2  
Old 08-11-2005
Code:
echo file.002 |awk -F. '{printf "%s.%03d\n",$1,$2+1}'

# 3  
Old 08-11-2005
excellent. I appreciate the quick reply!
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