On Tue, Dec 06, 2011 at 07:43:18AM +0100, Matthias Lederhofer wrote: > Nicholas Marriott <nicholas.marri...@gmail.com> wrote: > > Well, not necessarily, ksh for example does not export PWD. > > I could not verify this (on openbsd): > > matled@openbsd:~% ksh
If you start PWD with it already in the environment, it is marked as exported - this is the same as any other variable: $ export FOO=1 $ env|grep FOO FOO=1 $ ksh $ FOO=2 $ ksh $ env|grep FOO FOO=2 Make ksh your user's shell or unset PWD and try :-). It will not export PWD unless you ask it to. > $ cd /tmp/b > $ env |grep ^PWD > /tmp/b > $ sh -c pwd > /tmp/b > $ env -i sh -c pwd > /tmp/a > > > > What do you mean by the last two paragraphs? I think every new > > > session should be the same, in the current implementation the first > > > session is special as the environment variables of this session are > > > used for all later sessions. > > > > > > > Well, to be more precise, the global environment is set from the client > > which starts tmux and that is used for ALL sessions, including the first > > one. So all sessions are the same, modulo update-environment. > > > > We have to set the global environment up somehow, either copying from > > the first client or starting empty. > > > > The point is that if we copy the whole environment into the session > > environment for new sessions, the hierarchy of global environment < > > session environment is lost. > > My tmux usage is that I start it almost every time I start a terminal > emulator (urxvt). I'm using it especially because I can run tmux from > a specific directory and start a new shell in the same directory very > easily without the need to type the path again. I don't have a fixed > sets of tmux sessions running at all times, it may just happen that I > close all terminal emulators and did not detach from any session. > After that, starting the first tmux session again is nothing I do > deliberately, it just happens from time to time. > > In this scenario I do not understand yet what a global environment is > needed for. I find it more intuitive and sufficient to have one For your use, you want to be able to add * to update-environment. Particularly if that included PWD too. * should match anything, -* should remove anything in the new but not global environment add an unset (-FOO) for anything that is in the global environment but not the new. ------------------------------------------------------------------------------ Cloud Services Checklist: Pricing and Packaging Optimization This white paper is intended to serve as a reference, checklist and point of discussion for anyone considering optimizing the pricing and packaging model of a cloud services business. Read Now! http://www.accelacomm.com/jaw/sfnl/114/51491232/ _______________________________________________ tmux-users mailing list tmux-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/tmux-users
