UNIX for Dummies Questions & Answers

Hi,

I have a program that is accessing a file to update calibration data. However, the file access failed with a "File I/O error" message.

Below are the steps taken to resolve the issue but to no avail:

1) Change permission of file & directory to 777
2) confirmed disk is not full (58% empty).
3) move all content out of the directory.
4) confirmed correctness of the group & owner of the file.
5) run the calibration under su login

Any help will be appreciated.

Thanks.

Mouseking

Did 5) work? How is the calibration normally run?

Is the directory a subdirectory of a directory? Have you checked permissions for all directories up the tree?

5) did not work.

I have checked all the directories' permission already but still can't work.

Normally, I will issue the cal command "sruInit" in a open terminal and it will work.

That is why I am so troubled.

Is the file a plain text file? If so, can you read it in using more or less? If it's not plain text, try reading it using dd if=filename of=/dev/null. Make sure you do this using the same user ID as the calibration software runs under.

Yes,it is a text file & it can be read using more or less. This file will hold the calibrated data.

How big is the file? How does the programme usually update it - does it replace the entire contents every time it runs, or update some data in the file, or just add data to the end? Please paste the ls -l filename output.

What operating system and filesystem type are we looking at here?

The infos required is with my colleague & he is on leave & I am not at the factory at the moment & can only get back on next tuesday.

However the OS is Solaris 8 with UFS. I will confirm on the filesystem again.

Is there any more infos required besides the above?