alias ll="ls -hl"
alias l="ll -a"
+alias la="ll -A"
alias lasth='last | head -n "$((LINES-1))"'
alias lastf='last | grep -v "^$LOGNAME"'
alias 7='cd ~7 && pwd'
alias 8='cd ~8 && pwd'
alias 9='cd ~9 && pwd'
+alias -- -='cd -'
+
+alias md='mkdir -p'
+alias rd=rmdir