Nice and concice. If the poster meant "in the last 24 hours" to mean this calendar day, let's combine this concise answer with some of the others above: 
   
    if ( 1 > -M $file and 
          (localtime((stat _)[9]))[3] == (localtime)[3] ) {
               # modified "in the last 24 hours"
        }

[download]
Beware of small, subtle bugs around Daylight Savings time.

In reply to Re: Re: How do I determine if a file was modified today? by clintp
in thread How do I determine if a file was modified today? by /dev/trash

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