Install htop on CentOS 5 or 6

Install RPM for CentOS 5.x

32-BIT

wget http://pkgs.repoforge.org/rpmforge-release/rpmforge-release-0.5.3-1.el5.rf.i686.rpm
rpm -Uhv rpmforge-release*.rf.i386.rpm

64BIT

wget http://pkgs.repoforge.org/rpmforge-release/rpmforge-release-0.5.3-1.el5.rf.x86_64.rpm
rpm -Uhv rpmforge-release*.rf.x86_64.rpm

Install RPM for CentOS 6.x

32-BIT

wget http://pkgs.repoforge.org/rpmforge-release/rpmforge-release-0.5.3-1.el6.rf.i686.rpm
rpm -Uhv rpmforge-release*.rf.i386.rpm

64BIT

wget http://pkgs.repoforge.org/rpmforge-release/rpmforge-release-0.5.3-1.el6.rf.x86_64.rpm
rpm -Uhv rpmforge-release*.rf.x86_64.rpm

Install htop in CentOS Using YUM

Once the repository is installed, all you need to do to install htop in CentOS is run the following:

yum install htop