.txz
is short for .tar.xz
, just as .tgz
is short for .tar.gz
. You can unpack it like a .tar.xz
archive:
Run tar xf *archive*.txz
, since tar
will automatically figure out how an archive is compressed and decompress accordingly.
Assuming you downloaded this file (or that one), linked to from here and listed under "Ubuntu 14," there are a few points to keep in mind:
Most archives for software kindly keep everything in a top-level folder, but this one doesn't! Therefore, I suggest creating a cinelerra
folder, putting the archive in the folder (or downloading it to there in the first place, if you haven't already), and unpacking it there:
mkdir cinelerra
cd cinelerra
wget http://cinelerra.org/2015/downloads/cinelerra-4.6.mod-ubuntu-14.04.1-x86_64.txz
tar xf cinelerra-4.6.mod-ubuntu-14.04.1-x86_64.txz
Generic instructions for installing software from compressed tar archives are often instructions for installing from source, as source code is commonly packaged this way. However, Cinelerra is distributed for Ubuntu as a precompiled binary in a compressed tar archive. Thus, as the README
file says:
Run `./cinelerra` from this directory. That's it.
.txz
, an extension that remains somewhat uncommon (even compared to.tar.xz
) and is specifically what the OP was confused about. And I know the archive contains binaries rather than sources because I checked (and wrote about that in my answer).