.bashrc (.bash_profile)

alias ls='ls --color=auto'
alias grep='grep --color=auto'
alias l="ls -alh"
alias ..="cd .."
alias ...="cd ../.."
complete -W  "$(history|awk '{if ($2~"ssh|ping|telnet|traceroute") print $3}'|sort -u)" ssh ping telnet traceroute

# complete -W "$(echo $(cat ~/.ssh/known_hosts |awk '{print $1}'|sed 's/,/\n/g'|sort -u))" ssh ping telnet traceroute

alias vi="vim"