Checking for installed packages and if not found install
Try the following code :
if ! rpm -qa | grep -qw glibc-static; then yum install glibc-staticfior shorter :
rpm -qa | grep -qw glibc-static || yum install glibc-staticFor debian likes :
dpkg -l | grep -qw package || apt-get install packageFor archlinux :
pacman -Qq | grep -qw package || pacman -S package
if [ $(yum list installed | cut -f1 -d" " | grep --extended '^full name of package being checked$' | wc -l) -eq 1 ]; then echo "installed";else echo "missing"fiI use this because it returns installed / missing without relying on an error state (which can cause problems in scripts taking a "no tolerance" approach to errors via
set -o errexitfor example)