When I tried to run a package , it pops the below messages ,

"error while loading shared libraries: libstdc++.so.2.8: cannot open shared object file: No such file or directory"

I found that , in my system , only have below version of library .

#locate libstdc++.so
/usr/lib/libstdc++.so.5
/usr/lib/libstdc++.so.5.0.7
/usr/lib/libstdc++.so.6
/usr/lib/libstdc++.so.6.0.8


It seems the current version is newer than the package requires , can advise what can I do ? downgrade the library to libstdc++.so.2.8 is suitable ? any risk ? thx

My primary question is about the meaning of "I tried to run a package ...". Do you mean install a package? How did you try to install it? If you used yum or apt-get, these package managers should have coped with the dependency issues automatically.

Maybe your installed application is a bit older and requires older library versions. This happens sometimes and it's the main reason why several distributions provide so-called compatibility libraries. In your case you should look for compatlibs-stdc++ or something named like that. A Google search should give relevant results.

thx reply,

I tried to search compatibility , stdc++ in rpmfind.net , but can't find anything , can you provide another name ( or exact name) for me to search ? thx

Yes , what I mean is install .

I am not use yum , apt-get to install ( we have problem to directly connect internet ) .

Running a last century application may not be easy at all.

Googling .. libstdc++.so.2.8 rpm ..
my browser shows this in the first hit :
http://rpm.pbone.net/index.php3/stat....i386.rpm.html
> > compat-libstdc++-3.2-1.i386.rpm

which is for using even older applications
on the very old Redhat 7.0 ( Dec 2000 ).
.....