mdcd() {
	mkdir -p "$@" && cd "$@"
}

rmalias() {
        unalias $1 && sed -i "/alias $1\=/d" ~/.bashrc.d/aliases
}

mkalias() {
	echo -e "\n# added `date "+%F %T"`" >>  ${HOME}/.bashrc.d/aliases
	echo "alias $@" >> ${HOME}/.bashrc.d/aliases
	alias $@
}

###
###	Handy Extract Program
###     found at http://dotfiles.org/~blackbook/.bashrc
###	added 2008-10-07
extract () {
     if [ -f $1 ] ; then
         case $1 in
             *.tar.bz2)   tar xvjf $1    ;;
             *.tar.gz)    tar xvzf $1    ;;
             *.bz2)       bunzip2 $1     ;;
             *.rar)       unrar x $1     ;;
             *.gz)        gunzip $1      ;;
             *.tar)       tar xvf $1     ;;
             *.tbz2)      tar xvjf $1    ;;
             *.tgz)       tar xvzf $1    ;;
             *.zip)       unzip $1       ;;
             *.Z)         uncompress $1  ;;
             *.7z)        7z x $1        ;;
             *)           echo "'$1' cannot be extracted via >extract<" ;;
         esac
     else
         echo "'$1' is not a valid file"
     fi
}