do softwares meant for x86, install on x86_64 and x64. I am focusing on linux. What problems can occur. I have never been comfortable with the differences. Could you explain?
x86 refers to 32-bit software. x86_64 and x64 both refer to 64-bit software. Running 32-bit software on a 64-bit version of Linux is not the same as on Windows where 32-bit apps are thrown into a Program Files (x86) folder, some modifications are needed such as installing ia32 libraries.