3.Document-installing-mutliple-packages-with-for-loop-and-command-line-arguments.txt

#!/bin/bash
#Author: Narendra 
#Installing mutliple pkags

if [[ $# -eq 0 ]]
then
  echo "Usage: $0 pkg1 pkg2 ...."
  exit 1
fi


if [[ $(id -u) -ne 0 ]]
then
  echo "Please run from root user or with sudo privilage"
  exit 2
fi


for each_pkg in $@
do
  if which $each_pkg &> /dev/null
  then
     echo "Already $each_pkg is installed"
  else
     echo "Installing $each_pkg ......"
     yum install $each_pkg -y &> /dev/null 
     if [[ $? -eq 0 ]]
     then
       echo "Successfully installed $each_pkg pkg"
     else
       echo "Unable to install vim $each_pkg"
     fi
  fi

done
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