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Shell Programming and Scripting

Print character after pattern found

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# 15  
Old 07-29-2013
Hi Don, Thanks for the response.
Basically print substr($i, 1, 10) will display a timestamp e.g. 2013-16-07.
I want this timestamp to be assigned in a variable e.g. "x".
Then ill add 5 days using the below command:
Code:
date -d "$x 5 days" +%F

Last edited by Scott; 07-29-2013 at 03:01 AM.. Reason: Code tags
# 16  
Old 07-29-2013
So, the third example I gave you is exactly what you want:
Code:
#!/bin/ksh
awk -F'"' '{for(i = 2; i < NF; i += 2) print substr($i, 1, 10)}' file |
while read d
do      date -d "$d + 5 days" +%F
done

I don't have a GNU date utility to play with and the Linux date man page is vague, but I think you need to add the plus sign that I marked in red above to get the dates 5 days after the given birthdays.
# 17  
Old 07-29-2013
Quote:
Originally Posted by Don Cragun
So, the third example I gave you is exactly what you want:
Code:
#!/bin/ksh
awk -F'"' '{for(i = 2; i < NF; i += 2) print substr($i, 1, 10)}' file |
while read d
do      date -d "$d + 5 days" +%F
done

I don't have a GNU date utility to play with and the Linux date man page is vague, but I think you need to add the plus sign that I marked in red above to get the dates 5 days after the given birthdays.

Thanks Don,
"date -d "$d 5 days" +%F" works so far in ubuntu. But i have another problem when executing the below commands:
Code:
while read d
do      
x=$(date -d "$d 5 days" +%F)
echo $x
sed 's/$d/$x/g' file > file2
done

I added "echo $x" just to see if its returning the correct output and yes, its displaying the correct one. But
the file2 content doesnt get updated with the correct date which is timestamp+5 days.
Last edited by Don Cragun; 07-29-2013 at 02:14 AM.. Reason: Add CODE tags
# 18  
Old 07-29-2013
You need to use double quotes if you want the shell to expand variables within a string.

And, please, to preserve formatting, start using code tags for code and data. Moderators have already edited multiple posts of yours in this thread for that reason.

Regards,
Alister
# 19  
Old 07-29-2013
Quote:
Originally Posted by alister
You need to use double quotes if you want the shell to expand variables within a string.

And, please, to preserve formatting, start using code tags for code and data. Moderators have already edited multiple posts of yours in this thread for that reason.

Regards,
Alister
Hi Alister,
Sorry. Ill take note of that code tags.
Thanks for the help Don. I got it resolved.
Last edited by scripter123; 07-29-2013 at 02:57 AM..
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