I use add below scripts at /etc/bashrc on my CentOS server

/etc/bashrc
# added by Chun on 2020-03-04
umask 002
alias ls='ls --color -h'
alias vi=vim
alias weather='curl wttr.in'
alias useradd='useradd -g 48'
alias adduser='useradd -g 48'
PS1="\u@\h \w\\$ "
PATH=.:$PATH:/etc/init.d/:$HOME/.local/bin:$HOME/bin