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Top Forums Shell Programming and Scripting calcuate the week number of a given date Post 82973 by vino on Friday 9th of September 2005 03:08:16 AM
Old 09-09-2005
Ygor, look at this.

Code:
$ date --date="2005/05/08" +%W 
18
$ ./ygor.ksh                   
Week number for 2005/05/08 is 19


and this

Code:
$ date --date="2005/09/09" +%W 
36
$ ./ygor.ksh                   
Week number for 2005/09/09 is 36

Edit:

Code:
$ date --date="2005/12/31" +%W 
52
$ ./ygor.ksh                   
Week number for 2005/12/31 is 53

Why the difference for an old date and same results for today ? Looks like boundary cases are coming into play.

vino
 

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PACEMAKER(8)						  System Administration Utilities					      PACEMAKER(8)

NAME
Pacemaker - Part of the Pacemaker cluster resource manager SYNOPSIS
iso8601 command [output modifier] DESCRIPTION
iso8601 - Display and parse ISO8601 dates and times OPTIONS
-?, --help This text -$, --version Version information -V, --verbose Increase debug output Commands: -n, --now Display the current date/time -d, --date=value Parse an ISO8601 date/time. Eg. '2005-01-20 00:30:00 +01:00' or '2005-040' -p, --period=value Parse an ISO8601 date/time with interval/period (wth start time). Eg. '2005-040/2005-043' -D, --duration=value Parse an ISO8601 date/time with duration (wth start time). Eg. '2005-040/P1M' -E, --expected=value Parse an ISO8601 date/time with duration (wth start time). Eg. '2005-040/P1M' Output Modifiers: -s, --seconds Show result as a seconds since 0000-001 00:00:00Z -S, --epoch Show result as a seconds since EPOCH (1970-001 00:00:00Z) -L, --local Show result as a 'local' date/time -O, --ordinal Show result as an 'ordinal' date/time -W, --week Show result as an 'calendar week' date/time For more information on the ISO8601 standard, see: http://en.wikipedia.org/wiki/ISO_8601 AUTHOR
Written by Andrew Beekhof REPORTING BUGS
Report bugs to pacemaker@oss.clusterlabs.org Pacemaker 1.1.10-29.el7 June 2014 PACEMAKER(8)
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