What the differences between a Linux or UNIX software update and an upgrade? How do I perform the both?
Suse Linux is similar to RPM based Linux distro such as RHEL but does not comes with yum command. How do I install a rpm file or packages such as Apache or PHP under Suse Enterprise / OpenSuse Linux?
Q. Why do the other virtual network interfaces go down when I bring down eth0:0 under CentOS Linux?
My RHEL / CentOS Linux 4.x virtual network interfaces go down when I bring down eth0:0. How do I fix this issue?
Q. I’m using RHEL 4.x as database server. How can I run the up2date command to find out what package will satisfy library / module dependencies via RHN?
A.Update Agent provides a complete system for updating the RPM packages installed on a Red Hat Enterprise Linux system. Both command line and graphical interfaces are included.
Update Agent has a quite a few configuration options, including but not limited to: installing packages after they are downloaded; downloading source RPMs along with binary RPMs; whether or not to upgrade packages where the default configuration file(s) have been modified, and more.
Use the following syntax to query the RHN servers to resolve the comma separated list of dependencies. It will return a list of packages that will satisfy these dependencies:
For example, if an error read as follows:
error: failed dependencies:
libxyz.so is needed by httpd
libabc.so.1 is needed by httpd
To find out all libs or module dependencies in any of the package, enter:
# up2date --whatprovides=libxyz.so,libabc.so.1
Now just install packagename-1.15:
# up2date packagename
Q. How do I install ImageMagick software under Redhat enterprise Linux version 4 update 5?
A. ImageMagick is an image display and manipulation tool for the X Window System. ImageMagick can read and write JPEG, TIFF, PNM, GIF, and Photo CD image formats. It can resize, rotate, sharpen, color reduce, or add special effects to an image, and when finished you can either save the completed work in the original format or a different
one. ImageMagick also includes command line programs for creating animated or transparent .gifs, creating composite images, creating thumbnail images, and more.
ImageMagick is one of your choices if you need a program to manipulate and display images. If you want to develop your own applications which use ImageMagick code or APIs, you need to install ImageMagick-devel as well.
Use up2date command to install ImageMagick, enter ( <= RHEL 4 only):
# up2date install ImageMagick
OR use yum if you are using Fedora Core/CentOS/RHEL 5:
# yum install ImageMagick
Essential ImageMagick Hacks/Tips/Faqs…
Now use ImageMagick from command line or GUI: