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How to check GUI on RHEL5 from Windows client? I got Xterm running using Xming. When I tried xclock I got
bash: xclock: command not found

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Well, you can check that your X forwarding is working by running any X command, however if you want to run xclock specifically, then you want the xorg-x11-utils package.

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I am new to linux. Where could I download and how could I install xorg-x11-utils package for RHEL 5? – A.A Philip Nov 2 '09 at 8:29
yum install xorg-x11-utils – womble Nov 2 '09 at 10:00

That simply means that xclock is either not in $PATH or not installed at the remote server. Try running another utility that is in $PATH or check your $PATH by:

echo $PATH
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One thing to be aware of is that running an X application remotely does /not/ ensure that the GUI would be working correctly at the physical machine.

The architecture of the X-windows system often seems a little backwards at first, but when you connect to your RHEL box and forward an application, your Windows machine is the X server and your RHEL box is the X client.

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