Software Management in linux

1. To install a RPM package :
# rpm -ivh foo-1.0-2.i386.rpm

2. To uninstall a RPM package :
# rpm -e foo

3. To upgrade a RMP package :
# rpm -Uvh foo-1.0-2.i386.rpm

4. To query a RPM package :
# rpm -q foo
# rpm -qa | grep foo

5. To display a RPM package information : 
# rpm -qi foo

6. To check the signatue of a RPM package :
# rpm --checksig foo

7. To list files in a RPM package :
# rpm -ql foo

8. To list all the installed RPMs :
# rpm -qa