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How to compare current time with the input to variant?

 
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# 1  
Old 05-16-2011
How to compare current time with the input to variant?
Hi all,
I have a simple script follow:
-------------
#!/bin/bash
echo -n " Enter the date of today: "
read dateoftoday
-------------

Now I want to compare the variant $dateoftoday with date of the system (now) in order to prevent user inputs the past date to $dateoftoday. I want to make sure that $dateoftoday >= current date.

Pls help me to complete the script above with that above idea.

Thank you so much.
AXNB.
# 2  
Old 05-16-2011
Nuances matter: what level of time detail are you looking to compare? Is it just date? Not hours, minutes, seconds...?

Up front, I'd recommend you assign a value for your comparison BEFORE you'd echo the question to screen, and then format your comparison accordingly.
# 3  
Old 05-16-2011
Enter the date of the day in YYYYMMDD format, comparision will then be easier :
Code:
$(date +'%Y%m%d')

By the way, having a look at the script in post #9 of this thread https://www.unix.com/shell-programmin...zz-help-2.html may give you some clue
# 4  
Old 05-18-2011
my format is : DD-MM-YYYY
I have read the topic you gave, but have no clue.
Pls help me on this Smilie

Many thanks
 
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