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Awk , Sed Print last 4 numeric characters

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Top Forums Shell Programming and Scripting Awk , Sed Print last 4 numeric characters
# 8  
Old 10-30-2009
Code:
awk -F"-" '$3>=100 && $3<=9999'  a.txt

# 9  
Old 11-01-2009
Hello,
@danmero
@franklin52

Code:
From awk manpage:

 NF     number of fields in the current record

Quote:
Nop, $NF is the value of last field.
I am not seeing any where in the man page that $NF is value of last field. I am reading man page on:
Darwin Kernel Version 10.0.0 osx Snow Leopard.

Is NF number of fields in the current record as well?

Abacus
# 10  
Old 11-01-2009
Quote:
Originally Posted by abacus
[...]I am not seeing any where in the man page that $NF is value of last field
Note that NF and $NF are different.
NF is what you read in the man pages, $NF expands to the value of the last field (because of the leading $).
$1 is the first field, $number_of_fields is the last one.

Hope this helps.
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