Category Archives: RedHat

Uses for ‘sed’

I’ve lost count of the number of times I’ve had to check how to remove extra spaces from the end of the lines, or convert between DOS and Unix style line feeds so I thought I’d better write down some … Continue reading

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Configuring Network Interfaces in RedHat

A minimal install of RedHat 7.x does not enable the network by default (network interfaces are enabled when you login to the GUI bu the network manager – which doesn’t work if there is no GUI).

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Changing network device names

The latest versions of the kernel now rely on the BIOS enumeration of device names which means that the name of the network interface can change depending on your bus configuration (specifically where your network interface is connected).

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Configuring X Windows on a Virtual Machine

When using X windows on a virtual machine I have found that the screen resolution is detected automatically it can often default to a maximum resolution of 1024×768 pixels.

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Installing updates from behind a firewall

If you are behind a web-proxy then installing packages or updating your system requires that the environment variable http_proxy is defined first – this then tells the system to use a web-proxy.

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