[SOLVED] How to round values in a column in a file
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sprintf("%3.0f",$2)
means you format the value of $2 as float, 3 digits and 0 decimals => that means rounded).
$2 = sprintf... means $2 is set to rounded $2.
1 is a tricky line. It is a condition and always true, therefore the block belongs to this condition will be executed always. There is no block defined, it means the default will be used which simply prints the line. (it should have been written as 1 { print }).
for detailed explanation please read the man page of awk.... or ask
OFS is output field separator and FS is input field separator. Both are the Awk Built-in Variables. They define that the columns are separated with pipe (|).
$2 is second column. We need to modify this.
"sprintf()" is a string function. It acts in exactly the same way as "printf()", except that "sprintf()" assigns its output to a variable, not standard output.
You need to understand/learn awk to know how it works. Here is very small and good tutorial about awk which tells us about 8 in-built variables of the language. Take a look. http://www.thegeekstuff.com/2010/01/...-filename-fnr/
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