JPH0272445A - System file confirming system - Google Patents

Abstract

PURPOSE:To quickly and completely pick up the system files having such abnormality as the deletion, the destruction, etc., by writing down the information on a system file at its production and comparing the information with an actual system file. CONSTITUTION:When a system install means 4 produces a system file 7 based on an install floppy disk 1, a catalog production means 2 picks up the name, the size, etc., of the file 7 out of the disk 1 and adds the present (floppy) number to produce a catalog. This catalog is stored in an install confirming floppy disk 3. When the confirmation of the file 7 is required, a copy means 5 copies the contents of the disk 3 to a magnetic disk. A comparison means 8 compares the install file information 6 with the file 7 and picks up all discordant files to display them on a display or to output them in a list. Thus it is possible to pick up all deleted or destroyed system files with no mistake.

Description

[Detailed Description of the Invention] [Industrial Field of Application] The present invention relates to a system file confirmation method, especially UNIXR?
The present invention relates to a system file confirmation method for confirming the presence or absence of a generated system file and whether or not a file has been destroyed due to a sudden power cut, etc. in an O8 whose file system adopts this structure, such as Ms-DO3.

[Conventional technology]

Traditionally, to check the presence or absence of this type of system file, UNIXJ? ? A person familiar with the MS-DO3 file system checked each file by displaying a list of files using a list command.

Also, to check for file corruption, if the file is in directory format, check detailed information such as the file size and creation date by specifying the parameters of the list command, and if the file is in load module format, execute the file. In the case of text-format files, this was done by checking the contents using a file read command to detect abnormalities.

[Problem to be solved by the invention]

The conventional system file confirmation method described above does not delete or
In order to identify the corrupted file, a person familiar with the file system must identify the files that were likely being accessed at the time of the failure and check each file one by one. However, the disadvantage is that it is difficult to select all deleted or destroyed files without exception, and it is very time consuming.

Another drawback is that it is difficult to determine whether a file does not exist because it was deleted by mistake or whether it does not exist because it was not created in the first place.

[Means to solve the problem]

The system file confirmation method of the present invention includes a catalog creation means for creating information about the system file on a floppy disk for installation confirmation when a system file is generated, and the installation confirmation when confirming the presence/destruction of the system file. The present invention is characterized in that it includes a comparison means for comparing the information between the floppy disk for use with the actual system and the information.

〔Example〕 Next, the present invention will be explained with reference to the drawings.

FIG. 1 is a block diagram showing one embodiment of the present invention.
The case of NIX is shown. Specifically, the catalog/creation means 2 is a command execution means using a shell script, and the comparison means 8 is a comparison processing command execution means using the C language.

When the system installation means 4 generates the system file 7 based on the installation floppy disk 1, the cataloging means 2 automatically extracts the name, size, etc. from the installation floppy disk 1, and also extracts the location (
A list is created by adding a floppy number (floppy number) and stored on the floppy disk 3 for installation confirmation.

Next, when it is necessary to confirm the system file 7 after system installation or after a failure occurs, the copying means 5 copies the contents of the installation confirmation floppy disk 3 onto a magnetic disk, and the comparison means 8 The installation file information 6 and the system file 7 are compared, and all files that do not match are extracted and displayed on a display or output as a list. The recovery process is completed by restoring only the extracted files.

〔Effect of the invention〕

As explained above, the present invention saves information such as file name, size, location, etc. on an installation confirmation floppy when generating system files, and automatically compares it with the actual system files using two commands. By doing this, even a person who is not familiar with the file system in question can quickly and accurately identify system files that have been deleted, destroyed, or otherwise have an abnormality.

Recording means, 3... Floppy disk for installation confirmation, 4... System installation means, 5...
Copying means, 6...Installation file information, 7...
- System file, 8... comparison means.

Claims (1)

[Scope of Claims] Catalog creation means for creating information on the system file on a floppy disk for installation confirmation when generating the system file; and said floppy disk for installation confirmation when confirming the presence/absence of the system file, destruction, etc. and a comparison means for comparing the information with an actual system.