Bash alias functions

• Function to add alias of command

function addalias() {
    echo -e "adding alias $1 for $2\n"
    echo -e "alias ${1}=\"${2}\"" >> ~/.bashrc
    . ~/.bashrc
}

Usage : addalias nameofalias "command"

• Function to find newly installed python module working

function import(){
    python -c "import ${1}" 2> /dev/null
    [ $? -eq 0 ] && echo -e "Python module ${1} installed properly" || \
    echo -e "Python module ${1} is missing or perhaps mispelled"
}

Usage : import python_modulename

• Function to mkdir and cd into directory

function mkcd () {
    mkdir -p "$@" && eval cd "\"\$$#\"";
}

Usage : mkcd abc

• Function to show IP of all connections

function ips () {
  local interface=""
  local types='vmnet|en|eth|vboxnet|wlan|wl|tap|tun'
  local i
  for i in $(ifconfig \
      | egrep -o '(^('$types')[0-9]|inet (addr:)?([0-9]+\.){3}[0-9]+)' \
      | egrep -o '(^('$types')[0-9]|([0-9]+\.){3}[0-9]+)' \
      | grep -v 127.0.0.1
  ); do
      if ! [ "$( echo $i | perl -pi -e 's/([0-9]+\.){3}[0-9]+//g' )" == "" ]; then
          interface="$i":
      else
          echo $interface $i
      fi
  done
}

Usage: ips

• Function to check "Are you root ?"

function chk_root () {
    if [ ! $( id -u ) -eq 0 ]; then
        echo -e "Must be run as root"
        exit
    fi
}

Usage: Just use chk_root in script