allTools=(bwa mummer trimomatic) decFlag=0; for name in ${allTools[@]}; do #echo "enter your package name" # read name dpkg -s $name &> /dev/null if [ $? -ne 0 ] then echo " $name not installed :: Try installing $name with conda first" #sudo apt-get update #sudo apt-get install $name decFlag=1; else echo " $name installed" fi done if [[ $decFlag -ne 0 ]] then echo "Install all the missing sotware first" exit fi