tar中的-C选项更改父目录权限

Question

related to Tar without retaining directory and tar creation without directory to be retain

Hi All,

Thanks for making understand -C use to create a tar(tar -cf a/b/c/tarfile.tar -C a/b/c .) without retaining directory structure.

But when i un-tar its changing parent directory permission. Please help me understanding more about it. It should not change parent directory permission while extracting tar(tar -xvf).

Answer 1

The command

tar -cf a/b/c/tarfile.tar -C a/b/c .

has an entry for . (the directory which you are tarring). When you extract the tar, that directory's permissions apply. If you do not want this behavior, you can either

• specify the names (other than just ".") that you put into the tar file, eg, tar -cf a/b/c/tarfile.tar -C a/b/c foo
• specify the names of the items you want to extract . You can see what is available using tar tvf using your tarfile as the parameter.