Install zsh:
sudo yum install zsh
Grab grml’s zshrc and save it to /etc/zshrc.
/etc/zshrc
sudo wget -O /etc/zshrc "http://git.grml.org/?p=grml-etc-core.git;a=blob_plain;f=etc/zsh/zshrc;hb=HEAD"
Edit /etc/passwd and choose /etc/zsh as your shell:
/etc/passwd
/etc/zsh
vi /etc/passwd
Change the line containing your Username:
user:x:1000:1000:name:/home/thomas:/bin/zsh
Execute zsh.
zsh