Creative Codesmith

Shell Script: Adding days to a date input - Part 2

noreply@blogger.com (Mickey) — Wed, 26 Jan 2011 14:32:00 +0000

Apparently, there is still something wrong with the code in my previous post.

Here a quick solution to the problem: shift_date.sh

Code:

#!/bin/ksh



date_next=/home/micaela/date_next.txt



 #--- pretend this is your date input in YYYYMMDD format (string)

datestring='20101231' 



 #--- convert string to date

datestamp=`date --date $datestring +%Y%m%d`



 #--- get the formatted date input (this time using shift_date.sh) and add one day to it

./shift_date.sh $datestamp 1 >> $date_next

dateplusone=`grep '[0-9]' $date_next`



echo "The date string is: " $datestring

echo "Date plus one is: " $dateplusone



 #--- use it as a log file time stamp

logfile=daily_log_$dateplusone.txt



echo -e "Your log file is:" $logfile



touch $logfile

Special thanks to Ate Nessel for pointing out the bug :D

Shell Script: Adding days to a date input

noreply@blogger.com (Mickey) — Sun, 23 Jan 2011 08:31:00 +0000

(image taken from smashingapps.com)

Last week, I spent approximately 2 hours trying to figure out how I could add 1 day to a shell script's date input.
And, this is the solution I came up with:

Here is the code:
#--- pretend this is your date input in YYYYMMDD format (string)

 datestring='20110123' 



 #--- convert string to date

datestamp=`date --date $datestring +%Y%m%d`



 #--- get the formatted date input and add one day to it

dateplusone=$((datestamp +1))



echo "The date string is: " $datestring

echo "Date plus one is: " $dateplusone



 #--- use it as a log file time stamp

logfile=daily_log_$dateplusone.txt



echo -e "Finally after 2 hours you nailed it! Your log file is:" $logfile "\nTime to grab a cup of coffee and move on to the next task!"



touch $logfile

Hope this helps someone with the same problem :)

Hello World!

noreply@blogger.com (Matt) — Fri, 31 Dec 2010 16:00:00 +0000

It's the famous programmer's test print code of all time.

It stands true to its meaning...that and being the first post in this blog.

And so at the brink of 2011...