learn shell check host dependent pkg

【Purpose】

       Shell script check host dependent pkg

 

【Eevironment】

       Ubuntu 16.04 bash env

 

【Procdeure】

　　Source code: 

    dependent_pkg="gitk"
    for pkg in $dependent_pkg; do
    if ! dpkg-query -l $pkg | grep -q ii; then
        echo installing $pkg ..
        sudo apt-get -y install $pkg
    fi
    done