Shell Programming and Scripting

Dear all, I'm stuck on Solaris 9 bash (I believe is quite different from Linux system) trying to find a solution.

I have one file named like:

Code:

120629-1750-TERZ81_AS_YTR.txt
YYMMDD-HH-MM-......

The script should compare the actual date with the one reported on the file name and then take an action if the differences is greater or lower then 1 minute. The structure is like this:

Code:

DIFF=ACTUAL_DATE-DATE_ON_FILE
IF DIFF > 1 or DIFF < 1        # Greater or lower then 1 minute
THEN
.....
FI

Could someone help me to calculate the difference in minute? Thanks!

The minutes of actual time:

Code:

lo4:/export/home/vbe $ date +%M
32

You will have to find a way to choose the file name you want to extract the minutes (?)
but the idea:

Code:

lo4:/export/home/vbe/wks $ echo 120629-1750-TERZ81_AS_YTR.txt|cut -c 10,11
50

Now its simple arithmetics, I let you deal with...

EDIT: Well, I just realized that the file are -1 minute compared to current date.
FILE DATE: 0630-2119 --- CURRENT DATE: 0630-2120

So the question is now simple, how can I have MMDD-HHMM - 1 minute ??

This reads as nonsense because any time matches this condition (except exactly equals).

Please post representative examples and explain the problem you are trying to solve, not the problems with your solution.

Well, you're right. I'll try to explain better.
I have a log dir (contains statistical data) with many files like (120629-1750-TERZ81_AS_YTR.txt). These file are created every minute.

The script I coded just take the last log file with the following command:

Code:

stat_ytr=$(cd /var/opt/backup/; ls -t *TERZ81_AS_YTR.txt | head -1)

... then it extract the statistical counters!

But, if for some reason the system doesn't create any statistical data, with the above command, I always take the last file, that in this case is the same as previous script execution. So the statistical data is, in this case, not correct because the script take old data.

Since the log is created every minute, and the script runs from crontab every minute, what I need to do, is compare the actual date with the date present on filename. The problem is that the file is created one minute before the actual date, that's why I need to subtract 1 minute to actual date.

So, in other words, I need to take the actual date/time subtracting 1 minute and compare with the date/time extracted from filename.
What I cannot do is subtracting 1 minute to the actual date!!!!


---------- Post updated 01-07-12 at 01:51 AM ---------- Previous update was 30-06-12 at 05:02 PM ----------

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Well, I just realize that handling date with Solaris bash, is quite complicated.
So, I just using perl to formatting date :

Code:

perl -e 'use POSIX qw(strftime);  print strftime "%y%m%d-%H%M \n", localtime(time()+$ARGV[0]);' -- -60

Output: 120701-0847