Time Difference between two files in two different directories

Shell Programming and Scripting
1

Hi,

Can anyone please help me.
How to write shell script for taking time difference between two files which are in two different folders.

Example:

Folder1 is having sample_1_.txt with the time 13:10 hours
Folder2 is having sample_1_.txt with the time 13:17 hours

Now i need the time difference between many files like this by running a shell script. I need the output as below

Folder1 Folder2 Time Diff
sample_1_ sample_2_ 7 Seconds

This script is very urgent for me. Anyone's help is honestly appreciated.

Regards,
Sanjay...

2

What OS are you running?

3

Try something like below which uses epoch time to calculate the time diff:

file1_time=$(date +%s -d"$( ls -l file1 | awk ' { print $(NF-3)" "$(NF-2)" "$(NF-1); }')")
file2_time=$(date +%s -d"$( ls -l file1 | awk ' { print $(NF-3)" "$(NF-2)" "$(NF-1); }')")
(( diff_time =  file2_time - file1_time ))
echo $diff_time
4

First, show the last modification time for each file

> ls -l master.fmt
-rwxrwx--- 1 user xx 658 Sep  2 07:09 master.fmt*
> ls -l wor20080914.fmt
-rw-rw---- 1 user xx 219 Sep 15 11:01 wor20080914.fmt

Then, do stat commands on each file, and subtract one from the other.

> echo `stat -c%Y wor20080914.fmt` - `stat -c%Y master.fmt` | bc
1137073

You could divide by 60 to learn the # minutes
Divide again by 60 to learn # hours
And divide by 24 to learn the # days == 13.16

5

stat assumes GNU tools. Not everyone has those. Just so you guys are aware of this.
Not that stat is a bad choice, it is great if you have it.

6

OS is AIX

7

AIX has an alternative: the istat command.

Regards