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Date conversion

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# 1  
Old 09-01-2016
Date conversion
Hi ,


we have a string with yyyymmdd format .
how to know which date it is ?

example:
Code:
20120712-->sunday
20150228-->saturday
20140431-->invalid

please suggest commands which work on below
os : SunOS 5.10
shell: bash shell

Thanks,
Srinath.
Last edited by Don Cragun; 09-02-2016 at 07:40 AM.. Reason: Add CODE and ICODE tags again.
# 2  
Old 09-01-2016
A simple reading of the "date" manpage tells you this:

Today is 20160901, so

Code:
$ date +%A -d 20160901
Thursday

Invalid?
Code:
$ date +%A -d 20160431
date: invalid date `20160431'

Last edited by featheredfrog; 09-01-2016 at 02:36 PM.. Reason: added a chiding RTFM
# 3  
Old 09-01-2016
-d is not working in sun OS
# 4  
Old 09-01-2016
what version of Solaris?
# 5  
Old 09-01-2016
os : SunOS 5.10
shell: bash shell
# 6  
Old 09-01-2016
Hi.
Code:
$ gdate +%A -d 20160901
Thursday
$ gdate +%A -d 20160431
gdate: invalid date '20160431'

On a system like:
Code:
OS, ker|rel, machine: SunOS, 5.11, i86pc
Distribution        : Solaris 11.3 X86
gdate date (GNU coreutils) 8.16

And gdate residing in:
Code:
$ which gdate
/usr/bin/gdate

Best wishes ... cheers, drl
# 7  
Old 09-01-2016
Many older versions of Solaris do not have GNU date available.

For systems without it, I've written this Perl script which implements parts of GNU date's -d feature.

If you don't have GNU date, and don't have Perl, and don't have a very new KSH, you may be low on options.
These 2 Users Gave Thanks to Corona688 For This Post:
drl os2mac
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