[Gllug] Installing Stuff?

[Paul Brazier]

> Does rpm look at all packages it knows to be installed on the 
> system or
> does it look only in the current directory?

rpm is basically a database of all packages installed on the computer.
You might think of it as slightly like the "Add/Remove Programs" in the
Windows control panel.

To see all the packages currently installed:

rpm -qa

which will scroll a long list. To page it slowly:

rpm -qa | less

(less displays it a page at a time, PgUp & PgDown to scroll, q to exit)

You can also sort it:

rpm -qa | sort | less

Or search if any packages with name containing the string "foo" is
installed 
( -i means case insensitive):

rpm -qa | grep -i foo

To see what an installed package e.g. sendmail does:
(leave off the version numbers - one of the strange things about rpm is
you sometimes need to put all the version numbers and sometimes not)

rpm -qi sendmail 

To see what an non-installed package does:
(in general use "p" and the path name to query non-installed packages)

rpm -qpi /path/to/sendmail-x.y.z-i386.rpm

To list the files a package contains:

rpm -ql sendmail

To remove a package:

rpm -e sendmail

That should get you started.


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