On 07/06/10 10:30, littlebat wrote: >>> Ubuntu bash has a bug, even if I specified --rcfile, it still read >>> /etc/bash.bashrc. >> >> That's because /etc/profile does it explicitly: > > I have replaced bash in Ubuntu with the bash comes with LFS6.6. I found there > isn't a system-wide .bashrc file(just like /etc/bash.bashrc in Ubuntu 10.04) > in LFS6.6 bash. So, when I specified --rcfile append to LFS6.6 bash, it works > as its man page describes. But, under Ubuntu 10.04 bash, specified "--rcfile > ~/mybashrc" append to bash, it will read and perform /etc/bash.bashrc and > ~/mybashrc but without ~/.bashrc, it acts don't like its man page describes, > so it is a bug ( https://bugs.launchpad.net/ubuntu/+source/bash/+bug/589496 ). > > If there isn't this bug in Ubuntu 10.04, specified "--rcfile ~lfs/.bashrc" > will really solved this issue in spite of /etc/profile does it explicitly. > Because ~lfs/.bash_profile will be read and be performed after /etc/profile > (of course after /etc/bash.bashrc), the "env" command will set a empty > environment, it clear all the environment values include the values set in > /etc/bash.bashrc first. > >>>> There are almost always ways to work around little problems. >>> I think, it isn't everyone know how to solve these lttle >>> problems(just like me), so the best way is give the right guide in >>> the LFS BOOK. >> >> No, we really can't instruct for every possible combination of lack of >> knowledge. Having enough background in Linux to solve simple usage >> problems like this is really a prerequisite for LFS. > > No, I don't agree your point. As a book, it should be right at first. But, > under my Ubuntu 10.04, It doesn't act right when I did exactly as LFS BOOK > 6.6 says without a note such as "In some distributions, this instructions > should be modified to archive the goal of getting a clear LFS building > environment." > > So, I suggest to add a note like above into LFS BOOK 6.6 or give an all right > way to get a clear building environment. > > I am a LFS newbie but not a Linux newbie, so I think I can solved this issue > at last. But, as a LFS BOOK, it really need to make it more wonderful. > > Thanks for LFS, a Linux distribution that the first goal is education( > http://www.linuxfromscratch.org/lfs/view/6.6/prologue/audience.html In the > end, education is by far the most powerful of reasons. ). > > Thank you. >
Thanks for you work looking into this. I've noticed that the bash prompt wasn't right whilst building on Ubunut but the build succeeded so I never looked back. Andy -- http://linuxfromscratch.org/mailman/listinfo/lfs-support FAQ: http://www.linuxfromscratch.org/lfs/faq.html Unsubscribe: See the above information page
