tar differences in Linux and AIX

bspicer · 04-24-2002, 02:13 PM

We use to backup and restore in AIX with the following commands:

tar cvf /dev/rmt0 /myfilesystem
tar xvf /dev/rmt0 /myfilesystem

In Linux I can backup the same with the following:

tar -cvf /dev/st0 /myfilesystem

But to restore I have to use

tar -xvf /dev/st0 myfilesystem

Notice I left out the / in front of myfilesystem.

How come this happens. If I specify the /myfilesystem, it searches the whole tape and finds nothing.

Bill

jeremy · 04-24-2002, 02:54 PM

Sounds like you want the -P option.

Quote:

-P, --absolute-paths
don't strip leading `/'s from file names

--jeremy

bspicer · 04-24-2002, 03:52 PM

Thanks. Curious, why would you not want absolute paths. I'm not understanding why linux strips the leading.

Thanks.

Mik · 04-25-2002, 06:16 AM

Well say you archive your /home. If you go over to the /tmp directory and tell it to extract the archive then it will overwrite the original /home instead of creating a new /tmp/home.