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Full Discussion: Display previous days dates in ksh
Top Forums Shell Programming and Scripting Display previous days dates in ksh Post 302879759 by pr5439 on Sunday 15th of December 2013 03:42:48 AM
Old 12-15-2013
Display previous days dates in ksh
---------- Post updated at 03:42 AM ---------- Previous update was at 03:38 AM ----------

Sorry for a duplicate post, my post at the first place could not appear due to some net issue on my machine. Here is what i posted earlier:

Hi, i am using ksh in Solaris, i wanted to assign today's, yesterday's, and day before yesterday's date ( in mm/dd/YYYY format) to a variable in a script. Presently i am using :
Code:
tdate=$( date +"%m/%d/%Y" ) #Today
ydate=$(date +"%m/$(date +"%d" | awk '{ printf ("%02d",($1-1)) }')/%Y") #Yesterday
bydate=$(date +"%m/$(date +"%d" | awk '{ printf ("%02d",($1-2)) }')/%Y") #Day before yesterday

It works fine most of the time until today's date is 1 . Going by above logic, last two day's date would be 0 and -1, which in turn should be 30 and 29 or 31 and 30 based on the month( and a special case for February and leap year ). Presently i am making an exception on those days and making my job manually, but i wish to automate the process all along. Can someone help me to have a more optimized and accurate logic.
Thanks in advance
 

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LEARN ABOUT MINIX

suspend

suspend(1)                                                         User Commands                                                        suspend(1)

NAME

       suspend - shell built-in function to halt the current shell

SYNOPSIS

   sh
       suspend

   csh
       suspend

   ksh
       suspend

DESCRIPTION

   sh
       Stops the execution of the current shell (but not if it is the login shell).

   csh
       Stop the shell in its tracks, much as if it had been sent a stop signal with ^Z. This is most often used to stop shells started by su.

   ksh
       Stops the execution of the current shell (but not if it is the login shell).

ATTRIBUTES

       See attributes(5) for descriptions of the following attributes:

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE         |      ATTRIBUTE VALUE        |
       +-----------------------------+-----------------------------+
       |Availability                 |SUNWcsu                      |
       +-----------------------------+-----------------------------+

SEE ALSO

       csh(1), kill(1), ksh(1), sh(1), su(1M), attributes(5)

SunOS 5.10                                                          15 Apr 1994                                                         suspend(1)
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