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Awk/sed to play on calender

 
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# 8  
Old 12-25-2012
Awk split function returns the number of elements created which pamu stored in variable n. But this assignment is not required because this variable and its value is not used for any arithmetic operation. So you can avoid this and it will not make any difference.
Code:
cal 10 1987 | awk -v var="$value" 'NR==2{split($0,P)}
NR>2{for(i=1;i<=7;i++){if(var == $i){print P[7-NF+i]}}}'

# 9  
Old 12-25-2012
Quote:
Originally Posted by sathyaonnuix
. . .
@RudiC: Thanks for your code, can you please explain me on "(^| )"D" " - How this works.
This is to make sure day e.g. 1 will not match 11. The day (D) is surrounded by spaces or by line start and a trailing space. (^| ) is an ored regex used for this.
# 10  
Old 12-26-2012
Quote:
Originally Posted by sathyaonnuix
I understood they are splitting the columns and storing each value into the array P. Whats the need of n here n=split($0,P).
As bipinajith already explained how the script works and the logic.
I'd like to change it's logic lit bit. Instead of hard coding with numbers.
You can use bipinajith's code from post 8 also.
OR
Code:
value=1

cal 10 1987 | awk -v var="$value" 'NR==2{n=split($0,P)}
NR>2{for(i=1;i<=n;i++){if(var == $i){print P[n-NF+i]}}}'

# 11  
Old 12-26-2012
Quote:
Originally Posted by pamu
As bipinajith already explained how the script works and the logic.
I'd like to change it's logic lit bit. Instead of hard coding with numbers.
You can use bipinajith's code from post 8 also.
OR
Code:
value=1

cal 10 1987 | awk -v var="$value" 'NR==2{n=split($0,P)}
NR>2{for(i=1;i<=n;i++){if(var == $i){print P[n-NF+i]}}}'

To see why this might not be a good idea, try setting value to 30 or 31 and use cal 12 2012 instead of cal 10 1987.
# 12  
Old 12-26-2012
Quote:
Originally Posted by Don Cragun
To see why this might not be a good idea, try setting value to 30 or 31 and use cal 12 2012 instead of cal 10 1987.
Hi Don,

Thanks for pointing out the problem.Smilie

Code:
cal 12 2012 | awk -v var="$value" 'NR==2{n=split($0,P)}
NR>3{n=NF}
NR>2{for(i=1;i<=n;i++){if(var == $i){print P[n-NF+i]}}}'

 
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