I prefer bash as shell. It is very good to have the time and date for a command in history, especially for root.
and when you are logged in as root the prompt is red, and blue for normal users.
put this in your .bash_profile and in root’s .bash_profile
export HISTCONTROL=ignoredups
export HISTFILE=$HOME/.bash_history
export HISTFILESIZE=5000
export HISTIGNORE=
export HISTSIZE=2000
export HISTTIMEFORMAT="%a %b %Y %T %z "
if [[ ${EUID} == 0 ]] ; then
PS1='\[\033[01m\][ \[\033[01;31m\]\u@\h \[\033[00m\]\[\033[01m\]] \[\033[01;32m\]\w\[\033[00m\]\[\033[01;31m\]#\[\033[00m\]> '
else
PS1='\[\033[01m\][ \[\033[01;34m\]\u@\h \[\033[00m\]\[\033[01m\]] \[\033[01;32m\]\w\[\033[00m\]\[\033[01;34m\]$\[\033[00m\]> '
fi