Transition Links

[Madhu Sudhan_1]

Hi Guys !
This forum was of real help to me in clearing the exam HP Certified IT Professional (3H0-002).

In the exam there was one question about transition links. I don't exactly remember the options for this question. Could anybody throw some light on it.

Thanks,
...Maddhu

[Curtis Larson · Accepted solution]

Using 9.x Pathnames for Files in /etc
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You can safely use 9.x pathnames in most circumstances on a 10.x system
because transition links link the 9.x pathnames to the 10.x pathnames. But
if you are in single-user mode, this may not work.

The names of program files and scripts that were in /etc in 9.x are in most
cases links to corresponding files in /usr/sbin in 10.x; for example
/etc/reboot is a link to /usr/sbin. But in single-user mode, /usr is
unmounted. In this case, you need to use the version of the program that is
in /sbin.

What Will Happen During the Upgrade to 10.01
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To ease the upgrade to HP-UX 10.x, HP has supplied transition links
(essentially symbolic links) that allow applications to reference pre-10.0
pathnames. Although the links provide a vital component to the 10.x upgrade,
they do not by themselves guarantee full forward compatibility.

[Bruce Regittko_1]

Hi,

The release of 10.x saw the reorganization of many system files. To provide backward compatibility for old software, symbolic links were provided to the new locations. These are known as transistion links.

You can use the tlinstall and tlremove commands in /opt/upgrade/bin to -- you guessed it -- install and remove these links.

For more information, see http://docs.hp.com/hpux/onlinedocs/5969-4407/00/00/17-con.html.

--Bruce