libostree and $OSTREE_REPO environment path
libostree is a great tool to handle incremental or full updates for an Linux file system. But virtually all commands of ostree requires the --repo argument to override the default system repository path. This is really annoying after a while so my first attempt to get rid of this was to create an alias :
1alias ost='ostree --repo=/tmp/repo'It works but is not good. To solve it once and for all I was about to implement support for getting the repo path from an environment variable.
When digging around in the code, I found that the support is already there but completely undocumented.
It's therefor already possible to :
1export OSTREE_REPO=/tmp/repo
2ostree <cmd>So the patch for this time is simply a line that mention the option to use $OSTREE_REPO environment variable to point out a directory as system repository path.
commit 075e676eb63a3abaf647c789e22d8d1afe3a1dd5 Author: Marcus Folkesson <marcus.folkesson@gmail.com> Date: Tue Oct 17 21:03:23 2017 +0200 docs: mention the $OSTREE_REPO environment variable $OSTREE_REPO may be set to override the default location of the repository. Link: https://mail.gnome.org/archives/ostree-list/2017-October/msg00003.html Signed-off-by: Marcus Folkesson <marcus.folkesson@gmail.com> Closes: #1282 Approved by: cgwalters
Conclusion
If /ostree/repo is not the location of your system repository, it's really preferable to set the $OSTREE_REPO environment variable instead of provide the --repo to every single command.