Shell Programming and Scripting

Hard_AIX,
When I run those 3 lines I get the output as '2/25/09'.

But I want the date to be calculated from the variable date.

Eg:
When I run the below code I still get the output as '2/25/09' though my variable date is '02/01/09'

Date1='2009-02-01 00:00:00 +0000'
date2=$(/opt/freeware/bin/date --date="$Date1" -d "+5 day" +"%D")
echo $date2

It is ignoring the variable date.

Thanks,
Sud

Oh. Yes, you are right. It only works from the current date and I don't know if it can be made to work from another date.


In the past, on my system, I have used a shell script called shift_date. This is a slightly newer version than the one I have http://www.williamrobertson.net/code/shift_date.txt maybe you can get that to work.


here is a sample run from my system:

Code:

$ shift_date 20090101 -1
20081231

Thank you Sir but how do I use shift_date code..do I need to put it in some libraries? I created shift_date.ksh file by copying it from windows text file but ended up with ^M and I removed ^M using the following script.

cat -vet shift_date.ksh | sed -e s/\\^M\\$//g > temp_ftp_file.ksh
rm -f shift_date.ksh
mv temp_ftp_file.ksh shift_date.ksh

But I ended up with ^I instead of spaces.

Below is the extract from the file


^I^I^Ielif (( testyear % 400 == 0 ))
^I^I^Ithen
^I^I^I^Ileapyearanswer=${TRUE}
^I^I^Ifi
^I^Ielse
^I^I^Ileapyearanswer=${TRUE}
^I^Ifi
^Ifi

Please tell me how to remove that character.

Thanks.

Go to the url. On that page press ctrl-A (Select all) then crtl-c (copy).

On your aix system, open up your editor (vi?) make sure your are in insert mode and paste the copied text. Save it to a file called shift_date. Here I saved it into /usr/local/bin/shift_date but you can put in your home directory or /usr/bin/shift_date.

Then change persmissions on the file to make it executable;

chmod +x /pathto/shift_date

if the directory you are testing from is on your path you can just execute it directly as I did in the example above. Or put the path name on shift_date and execute it like this
/usr/local/bin/shift_date 20090101 -1