Hi, I'm installing several AMD 64bit machines, and I've also installed 32bit compatibility for legacy programs. But unfortunately, I've found a "strange" phenomenon: a pair of same name packages, one is i386 version and another is x86_64 version, can be installed at the same time without confliction, although they contains the same set of files, either exectible binaries and libraries or simple documents. Let's give an example (mysql) listed below, bith mysql.i386 and mysql.x86_64 includes /usr/bin/mysql/ but are installed without confliction. Then I got confused here (not FC4 OS). :) If I just run 'mysql' from command line, which version (i386, x86_64) of mysql will be run? If I remove one version, say mysql.x86_64, then the file /usr/bin/mysql will get deleted? or it just downgrade to 32bit version only? If the latter is the case, then where does FC4 Linux save the 32bit version binary? My questions seems pretty riduclous because I'm a newbie to 64bit world. Plaese help. I will be very appreciated if someone can give me some reference sites about this 32bit|64bit rpm introduction. [user02@testserver01 ~]# rpm -q --queryformat '%{name}-%{version}-%{release}.%{arch}\n' mysql mysql-4.1.16-1.FC4.1.x86_64 mysql-4.1.16-1.FC4.1.i386 [user02@testserver01 ~]# rpm -ql mysql.x86_64 |head -5 /etc/ld.so.conf.d/mysql-x86_64.conf /etc/my.cnf /usr/bin/msql2mysql /usr/bin/mysql /usr/bin/mysql_config [user02@testserver01 ~]# rpm -ql mysql.i386 |head -5 /etc/ld.so.conf.d/mysql-i386.conf /etc/my.cnf /usr/bin/msql2mysql /usr/bin/mysql /usr/bin/mysql_config __________________________________________________ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com