How to lock a file in linux/unix by a java program? [duplicate]

Question

This question already has answers here:

How can I lock a file using java (if possible) (8 answers)

Unable to lock files on Linux using java.nio.channels.FileLock (6 answers)

Closed 8 years ago.

I need to lock a file in unix/linux OS. I have googled and read about java.nio.channels Filelock and Reentrant File Lock . But both works in Windows but not in unix. Is there any other way of implementing a lock on file in unix? Any sample code would be highly appreciated.

Thanks, Vignesh

Answer 1

you could have a look at this (not java related) post - https://unix.stackexchange.com/questions/20104/is-there-any-way-to-prevent-deletion-of-certain-files-from-user-owned-directory.

it contains 2 solutions - either chowning the file by root and setting the sticky bit or using ext2/3/4 specific attributes.

both of these solutions are doable from java using System.exec()