read date

Abid Malik · 10-21-2010, 08:17 AM

Hello!

i want to know that how we can read date in format of 12/04/2010

in bash shell script

i mean , i want to read date form key board

i want that the user give input in the form of 12/04/2010 and then system varify that the entered date formate is correct or not. if it is valid , system will print echo " valid date" otherwise system will print echo "invalid date format"

GrapefruiTgirl · 10-21-2010, 08:27 AM

Your question is a little bit ambiguous.. Do you want to simply have the user enter a date in that format (use the `read` command) or do you want them to enter a date, and have it outputted in that format?

Here's something to ponder meanwhile:

Code:

read -p "Enter the date: " datestring; echo $(date -d "${datestring}" +%D)

So, I enter a date and it formats it like you showed:

Code:

Enter the date: Mar 01 2010

03/01/10

johnshen64 · 10-21-2010, 08:29 AM

just use the buildin read command to read in the string.

maybe you are talking about date format conversion. date -d '12/04/2010' should parse it correctly and you can format it to whatever other format you need by using a format string.