On 17-08-31 14:43:10, Rick Stevens wrote:
On 08/31/2017 11:14 AM, Tony Nelson wrote:
> On 17-08-31 12:41:09, Mike Wright wrote:
>
>> How about using "env": env PATH="new_path" chroot /some_dir
>>
>> Wouldn't this preempt the passed PATH, profile, bashrc, and the dot
>> files? If so, chroot could be defined as an alias to "env ...
chroot"
>> and thereby eliminate the problem.
>
> Seems to work. Note that this only changes the passed path; any
> pathmunge()'ing in the chroot's startup scripts still happens. I've
> already fixed the problem inside the chroot, but I'll set this up if
> I find another problematic chroot. It should be OK to look at
> /usr/bin twice if /bin -> /usr/bin and the command doesn't exist.
If the pathmunging is done in a "/<wherever-chroot-is>/etc/..." script
or in a "~/.whatever", absolutely as that is done after the chroot
spawns the shell in the chrooted environment. If you're saying it
happens before the chroot, then I don't know how that'd occur.
No, I didn't say that. I said "I've already fixed the problem inside
the chroot".
I think the issue you've been having is that your chroot environment
doesn't have the merged /bin and /usr/bin. It has separate /bin and
/usr/bin directories. After the merge of /bin and /usr/bin was
established, I believe bash's built-in default PATH was modified to
assume this symlink was done. That's why the new bash doesn't have a
separate "/bin" in its default path.
bash's default path is not being used; if it were, it would be the
CentOS5 bash. PATH is set in the chroot environment by chroot itself,
which is how the outer PATH or the env PATH get into it. The f20 chroot
works because it postdates the /bin -> /usr/bin merge and doesn't need
/bin in PATH. CentOS5 has separate /bin and /usr/bin, and needs /bin in
PATH. That can be passed in, as with env, or done in the chroot by
pathmunge'ing in a bash startup script in /etc/profile.d (both
/etc/profile and /etc/bashrc source that directory).
--
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' <http://www.georgeanelson.com/>
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