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Shell script for Date conversion from mm/dd/yy to mm/dd/yyyy

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Top Forums Shell Programming and Scripting Shell script for Date conversion from mm/dd/yy to mm/dd/yyyy
# 8  
Old 03-30-2011
Thanks a bunch...

I tried this one.. can u please validate.
Code:
string="040630"
year=`echo $string | cut -c 1-2`
month=`echo $string | cut -c 3-4`
day=`echo $string | cut -c 5-6`
year=`expr $year + 2000`

I amnot sure if all the scenarios will be covered here or not.
Last edited by Franklin52; 03-31-2011 at 06:39 AM.. Reason: Please use code tags
# 9  
Old 03-30-2011
That looks fine - purests may say that the use of external commands (like cut and expr) should be avoided as there is a performance hit in loading the command and the shell is powerfull enough to do the same task.

However if your not processing hundreds of strings its hardly worth the loss in portability and readability.
# 10  
Old 03-31-2011
Here is an alternative way using awk and sed - changing ALL the *.pdf files made up in a similar way (double digit _ double digit _ double digit.pdf) in all the subdirectories from your current one down and replacing them the way you wanted it.

Code:
ls
09_14_11.pdf
find . -name "*.pdf" | awk '{print("mv "$1" "$1)}' | sed 's/\([0-9]\{1,2\}\)_\([0-9]\{1,2\}\)_\([0-9]\{1,2\}\)/\1_\2_20\3/2' | /bin/ksh
ls
09_14_2011.pdf
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