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Week number from a date.

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# 1  
Old 04-16-2012
Week number from a date.
Hi,
How can we get the week number from any paricular date. lets say date is 20120404 (YYYYMMDD) then how to get the week number?

date +%W --- Thic command gives the week number for current date only.

Thanks.
# 2  
Old 04-16-2012
what is mean by week number ?

do you want to extract the date from the YYYYMMDD ?
# 3  
Old 04-16-2012
Week number means the week code...
for today the week code is 16 from the below command.
Code:
spdwa526:/axphome/rmund1(133)$date +%W
16

Similarly for any given date how can I know the week code?
Last edited by Franklin52; 04-17-2012 at 03:25 AM.. Reason: Please use code tags for code and data samples, thank you
# 4  
Old 04-16-2012
Code:
 
$ echo "20120404" | awk '{print substr($0,5,2)}'
04

# 5  
Old 04-16-2012
Code:
date -d '20120404' +%W

# 6  
Old 04-16-2012
Code:
date --date=20120404 +%W

# 7  
Old 04-16-2012
Both of the above solutions are not working.
Code:
date -d '20120404' +%W
date: illegal option -- d
usage:  date [-u] mmddHHMM[[cc]yy][.SS]
        date [-u] [+format]
        date -a [-]sss[.fff]

Can you please check & let me know exact command.
Last edited by Franklin52; 04-17-2012 at 03:24 AM.. Reason: Please use code tags for code and data samples, thank you
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