Shell script `default/dns-utils'

Install dig, host, nslookup commands by installing dnsutils (Ubuntu/Debian) or bind-utils (CentOS)

if command -v "apt-get" > /dev/null 2>&1; then sudo apt-get -q -y -o Dpkg::Use-Pty=0 install dnsutils elif command -v "yum" > /dev/null 2>&1; then sudo yum -q -y -o Dpkg::Use-Pty=0 install bind-utils fi