Diff/head - not sure if this is the right command to use
Hi,
I need some advise on whether there is a better way of doing what I am currently planning to do. Perhaps I should be using arrays instead of re-directing output to files?
I need to use a tool/program named ADRCI provided by Oracle to remove trace files that it generates. Honestly it is not the best one to use but unfortunately the nature of the job calls for "WE MUST USE IT".
Anyway, the tool has issues where even if I say purge files that are x-number of days old, it still was not able to delete some of the very old files. I am guessing that it may be checking something internally in the database and hence not recognizing these very old files.
In this scenario, am ending up with files that are old and has to be deleted but not getting deleted.
At the moment, what I am looking at doing is as below:
Not sure if I stated it clearly. To illustrate what am wanting to do.
For example, if step 01 gives a list as below that I placed in x1.txt
- Then Oracle's ADRCI run and after I run I do another ls -1tr and redirect it to a file named x2.txt that has the following list:
- This means, Oracle ADRCI remove the files named file4, file5, file6. And that also suggest that all files before file4 are old and not recognized by Oracle ADRCI anymore. Hence they can be deleted
- What am thinking is to use the diff command and then cat/awk/head/sed, am confused to get the list of files that I want to remove
Using diff for these two files, I get the result below:
- Looking at the result, I only need the first line, 4,6d3, and then the first number which is 4 and subtract one from it. I then use cat/awk/head/sed x1.txt then run the rm on these files
- Using head, I get the list below which are the files that I want to remove
Please advise if there is a better way of doing what I am intending to do. Should I use awk/sed instead of diff'ing and head'ing?
Thanks in advance.
Last edited by jim mcnamara; 12-13-2012 at 11:01 AM..
The following seems to do what you want:
Try it and if it looks like it identifies the correct set of files, change the first printf call in the END section from:
to:
we have a file as below
AREA,COUNTRY,RANK
A,MX,1
A,MX,2
A,MX,5
A,MX,8
A,IN,7
A,IN,5
A,IN,21
B,CN,6
B,CN,2
B,CN,8
B,CN,0
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1. The problem statement, all variables and given/known data:
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1. The problem statement, all variables and given/known data:
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