How do I find out PHP version under Linux operating systems? What command do I need to type to show the PHP version under Unix-like systems? How to find out what PHP version is installed on my server when I can now login using the ssh command and check the PHP version?
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How do I verify that the system using correct GPG keys to verify all patches, packages and update installed from RHN or repo under RHEL 5 or 6 server operating systems?
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I‘m a new Linux system administrator and wanted to perform software installation and maintenance. I’ve downloaded a file called awstats.i386.rpm and how do I install it under CentOS / RHEL / Suse / Fedora / Redhat Linux?
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How do I find out mysql version under Linux or Unix operating systems?
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My CentOS Linux based server failed to boot with the following error:

read_urandom: /dev/urandom: open failed: No such file or directory

How do I fix this problem?
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All rpm packages can run scripts after a package is added or removed. How do I view pre/post install and uninstall rpm file scripts under rpm based Linux distributions?
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