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unix
What are the control keys on my VMWare ESX guest to PXE boot or change the boot order?
The BIOS screen on VMWare guests flashes by pretty quickly, so below is a list of the possible key-sequences: There are two...
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unix
How do I delay the boot up of my VMWare ESX guest?
VMWare virtual machines boot up can be fast and sometimes may not allow the keyboard input to be received in that short...
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unix
How do I exclude files from a tarball using the tar command?
You can use two different methods to exclude files from a tarball using GNU tar: 1. Use the –exclude option like the...
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unix
How do I update the ELOM IP address on my Sun Fire x2100 M2?
To update the ELOM IP address on a Sun Fire x2100 M2 via ssh, you can do the following: set /SP/AgentInfo DhcpConfigured=disable...
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networking
How can I check my TTL from an external nameserver?
You can check the TTL using commands like dig and host. With dig, you can specify an external nameserver to check from....
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unix
How do I enable ssh on my VMWare ESXi server?
VMWare ESXi 4.0 by default has ssh disabled and it is not supported, however it is possible to run ssh. If you...
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unix
How do I update the ELOM date and time on my Sun Fire x2100 M2?
Updating the ELOM date and time on a Sun Fire x2100 M2 can be done using ipmitool. The following command should do...
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webserver
How can I run multiple Apache instances on port 80 on my Linux server?
To run multiple instances of Apache on port 80 they need to be listening on different IP addresses. If you have 1...
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webserver
How do I block certain IP addresses from accessing my Apache webserver using a RewriteMap?
To block specific IP addresses from accessing a specific VirtualHost or your entire webserver, you can set up a RewriteMap with the...
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webserver
How to restrict file access in Apache via the httpd.conf?
To restrict access to specific to files in Apache via the httpd.conf you can use the Files directive. An example is shown...