Face mark for command prompt

face_mark_PS1.sh

PS1="\$(\
  ret=\$?
  rand=\$((RANDOM%36));\
  if [ \$ret -eq 0 ];then\
    if [ \$rand -lt 3 ];then
      printf '\[\e[m\](^_^)\[\e[m\] \$ ';\
    elif [ \$rand -lt 5 ];then\
      printf '\[\e[m\](^_-)\[\e[m\] \$ ';\
    elif [ \$rand -lt 6 ];then\
      printf '\[\e[m\](.^.)\[\e[m\] \$ ';\
    else\
      printf '\[\e[m\](-_-)\[\e[m\] \$ ';\
    fi;\
  else\
    if [ \$rand -lt 6 ];then\
      printf '\[\e[31m\](@o@)\[\e[m\] \$ ';\
    elif [ \$rand -lt 12 ];then\
      printf '\[\e[31;1m\](>_<)\[\e[m\] \$ ';\
    elif [ \$rand -lt 18 ];then\
      printf '\[\e[35m\](*_*)\[\e[m\] \$ ';\
    elif [ \$rand -lt 24 ];then\
      printf '\[\e[34m\](T_T)\[\e[m\] \$ ';\
    elif [ \$rand -eq 30 ];then\
      printf '\[\e[34;1m\](/_T)\[\e[m\] \$ ';\
    else\
      printf '\[\e[31m\](>_<)\[\e[m\] \$ ';\
    fi\
  fi;\
  )"

See demo