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[universal]

I'm trying to write a function that will take a date in a certain format as an argument. (Say 2/13/87) Then using if then statements if the argument date is formatted correctly(2/13/87) note it can be any date,  then the date will show formatted a different way (Say 1987-2-13) if no date is entered then I need it to return just the current date.

[universal]

This is a copy of what I have so far any help would be appreciated Thanks
function date2my()
{
date --date="$1" +"%m/%d/%y"
if [ "1" ]
    then
       echo "$1" +"%Y-%m-%d"
  else
       echo `date`
fi
}
 

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