compare file modification date/time to current date/time

Bill Ma · #1 (**permalink**) 06-03-2009

How do I compare the file modification date/time to the current system date/time? I need this to check to see if a new file is being ftp'ed every hour/every 6 hours, etc.

Thanks in advance.

jim mcnamara · #2 (**permalink**) 06-03-2009

Code:

#!/bin/ksh
# filetimes.sh
# usage  filtimes.sh [filename]
filetime()
{
    perl  -e '
          $mtime = (stat $ARGV[0])[9];
          print $mtime
         ' $1
}
now=$(date +%s)
limit=$(( $now - 21600  ))  # 6 hours ago
ftime=$(filetime $1 )
if [[ $ftime -lt $limit ]] ; then
   echo "file too old"
fi

Bill Ma · #3 (**permalink**) 06-03-2009

Thanks for the quick response. I ran this and received the following error:

%s - 21400 : syntax error

durden_tyler · #4 (**permalink**) 06-03-2009

Quote:

Originally Posted by Bill Ma

...I need this to check to see if a new file is being ftp'ed every hour/every 6 hours, etc.
...

Not sure, but maybe this could help:

Code:

find . -type f -mmin -360

lists down all regular files in the current directory whose data was last modified less than 360 minutes (6 hours) ago.

tyler_durden

Bill Ma · #5 (**permalink**) 06-04-2009

unfortunately the Unix find command installed does not have the mmin option only the mtime option which (to my knowledge) only accepts integer values -- days -- not hours

Llanferres · #6 (**permalink**) 08-27-2009

Try:

now=`date '+%s'`
(( limit=$now-21600 )) # 6 hours ago

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