How can I move /usr/bin, /usr/lib (etc.) files?

How can I move /usr/bin, /usr/lib (etc.) files?

[Jamie Risk]

Moving the contents of my "/usr/bin" directory is simple enough: "mv
/usr/bin [newdirectory]" does the trick; but finding the programs in the new
location seems to be the kicker.

I'm using bash, so editting the ".profile" file in the user's home directory
seems to have done the trick for the most part, although when I invoked
"man" (as in "man bash") after moving the directory, updating ".profile" and
re-login,  I get messages akin to "/usr/bin/nroff not found" and
"/usr/bin/tr not found".
 * Where, in general, do programs (such as man) get there path information
from?

Similarily, I'd like to move the /usr/lib directory to another location.
 * Should I download src for packages that I'm using and recompile with
appropriate destinations chosen in the configure scripts?

Some information about my system is available at
"http://members.rogers.com/riskweb3/Linux/ibm_linux_box_info.html"

Let me know if you want to see more info ...

Thanks,
- Jamie

p.s. I've been using unix systems for years and have always relied on
services of others to administrate my environments. Recently I started using
a minimalist Linux installation to catalyze my unix admin learning process.




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Re: How can I move /usr/bin, /usr/lib (etc.) files?

[Jamie Risk]

"Chris" wrote:
>bad bad idea. ... why would you want to do this?

The reasons _are_ fickle but:
 * I'm trying to develop an understanding of how linux operates...
 * Most unix environments I've worked on were set up with /usr/local/bin
etc. so I'm used to this
 * I'm having fun compiling all the src packages anyway, so if it's just a
case of specifying in the "configure" process of make and header file
generation, then I'd give it a whirl.





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Re: How can I move /usr/bin, /usr/lib (etc.) files?

[sos22]

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> I'm using bash, so editting the ".profile" file in the user's home directory
> seems to have done the trick for the most part,
You may also want to modify /etc/environment, so that programs
other than Bash get the new PATH as well.

(Your system may call /etc/environment something else.  Look in
/etc/pam.d/login or /etc/security.d/login for pam_env.so for
some ideas)

> although when I invoked
> "man" (as in "man bash") after moving the directory, updating ".profile" and
> re-login,  I get messages akin to "/usr/bin/nroff not found" and
> "/usr/bin/tr not found".
>  * Where, in general, do programs (such as man) get there path information
> from?
In general, it depends on the program.  man, though, usually looks
in /etc/manpath.conf. (man 5 manpath)

> Similarily, I'd like to move the /usr/lib directory to another location.
>  * Should I download src for packages that I'm using and recompile with
> appropriate destinations chosen in the configure scripts?
That might be necessary.  If you're lucky, though, you might be able
to get away with adding the new location of /usr/lib to /etc/ld.so.conf
and the environbment variable LD_LIBRARY_PATH (same syntax as
$PATH).

Your life will almost certainly be drastically easier if you
create a symlink from /usr/lib to the new location...

Steven Smith,
sos22@cam.ac.uk.

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