Comparing the timestamp of the file to current time

UNIX HP-UX
1

I have a file like this

-rwxr-xr-x 1 rewq other 168 Jan 13 07:05 check_files.sh

I want to compare (check_files.sh time) with the current time to see if its is older than 2 hours or not

if it is not older than 2 hrs then do something.can someone help me on this?.I dont want to use mmin ,im on hp unix which doesnt support mmin option .Thank you

2

Hello Haadiya,

Following may help you in same.

VAL=`find -type f -mmin +120 -iname "Input_file"`
if [[ -n $VAL ]]
then
       echo "File is OLDER than 2 hours."
else
       echo "File is NOT older than 2 hours."
fi

I have just provided and example for same in if else statements you can provide actions too which you want to perform, hope this helps.

Thanks,
R. Singh

1 Like
3

Hello Ravi,

Im on hp unix which doesn't support mmin option ,and my filename is dynamic i dont know the file name.what im trying to do is

1) Run the script every 2 hours and check if the last file generated was more than 2 hours old.
below are my tries

 Last file = ` ls -ltr | awk '{print $9}' | tail -1`
 Time of Last file = ` ls -ltr | awk '{print $6,$7,$8}'|tail -1`

Compare with current time to see if its older than 2 hours or not

2) If there is a latest file generated which is not older than 2 hours, check if the latest file is empty.
empty means -
If 'cat filename | wc -l" = 0 (zero lines in the file)

if empty do something

Im working on building this

4

Hello Haadiya,

Could you please try following and let me know if this helps.

NAME_FILE=`ls -lhtr | awk '($1 !~ /^d/) {print $9}' | tail -1`
CHECK_FILE=`find -maxdepth 1 -type f -name $NAME_FILE -mmin +120`
if [[ -z $CHECK_FILE ]]
then
 if [[ -s $NAME_FILE ]]
 then
  echo "File is NOT empty."
 else
  echo "Do operations as you wish."
 fi
else
 echo "File is OLDER than 2 hours."
fi

Thanks,
R. Singh

1 Like
5

Do you have a touch command that allows you to create a file 2 hours old? Then use this for the -newer find primary.

1 Like
6

Hello RudiC,

Yeah you are right,im saw few threads using touch and -newer option,the thing is, im not suppose to create any file in that dir,thats the reason i didnt go for that.

Hello Ravi,
Just an example of mmin in my unix box.I have hp ux 11.3
$ find . -mmin -60 -size 0
find: bad option -mmin
your solution would throw an error ,anyways i ll keep trying

I used something like this earlier

dir="/home/user"
found=`find "$dir" -type f \( -mtime +7200 -o -size 0 \)`
if [ -n "$found" ]; then
 echo "There are files older than 2 hours OR with size 0:
$found"
fi

then realized mmin doesnt work for me.Thanks iI llwork on finding some alternative

7

You don't need to create that file in the target dir, create it in your home dir. Or in /tmp.

1 Like
8

If you run the script every 2 hours then simply leave a file behind and compare timestamps in the next run.

me=${0##*/}
lr=/tmp/$me.lastrun
if test -f $lr
then
  for f in $(find . \! -name . -prune -type f -size 0 -newer $lr)
  do
    echo "$f is a new empty file"
  done
fi
>$lr
1 Like