File identification method and device

Abstract

The embodiment of the invention relates to a method and a device which are used for identifying files, wherein, the method for identifying files comprises the following steps: file information tables are created and maintained; all files are inquired periodically or under booking conditions; all files are matched with all the information tables; if a file can not be matched with the information in the file information tables, the file is a dummy file. The device for identifying files comprises a creating unit used for creating and maintaining file information and a recognition unit used for inquiring all the files periodically or under the booking conditions. All the files with the file information tables which are created and maintained are matched. If a file can not be matched with the information in the file information tables, the file is a dummy file. By matching all the files with the file information tables which are created and maintained, the method and the device which are used for identifying files ensure that the file which can not be matched with the information in the file information tables can be determined to be dummy file.

Description

technical field [0001] The invention relates to the field of computer technology, in particular to a file identification method and device. Background technique [0002] With the rapid development of computer technology, embedded technology has been rapidly applied. At present, many embedded systems use the file system, but after the embedded system runs for a long time, some junk files will be left on the file system due to upgrade or software factors. Due to the limited space of the embedded system, these junk files waste valuable space. In addition, too many junk files may also affect the performance of the system. [0003] Therefore, if junk files can be identified and responded to and processed, not only space can be saved but also system performance can be improved. In the prior art, some systems use software to identify and process junk files. For example, some software takes measures to delete all files on the system before installation or upgrade to ensure the spa...

AI Technical Summary

Problems solved by technology

[0004] However, the inventor found in the process of implementing the above-mentioned technical solution: there are some defects in the above-mentioned technical solution, for example, if the system is only emptied when installing or upgrading, then the junk files generated after the system has been running for a period of time cannot be easily removed; if Without installation or upgrade, these junk files cannot be cleared; in addition, the risk of human identification and removal of junk files is high, and non-junk files may be deleted by mistake; moreover, the recognition rate of existing software and manual identification is not high, Junk files are not cleared cleanly, which will waste system space and affect system performance

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