# directory operations
alias ..='cd ..'
alias ...='cd ../..'
alias ....='cd ../../..'
alias .....='cd ../../../..'
alias -- -='cd -'
alias md='mkdir -p'
alias rd='rm -r'
# directory listings
alias ll='ls -l'
alias la='ls -la'
alias lh='ls -lh'
alias sl='ls'
# super user
alias please='sudo'
# show history
alias history='fc -ln 1'