After adding a network card (NIC or Network Interface Card) to an OpenSuSE system, and configuring the device with YaST, I could not get it to activate.  After a reboot it also didn’t show up as an active interface.

Many of the utilities in Ubuntu Linux use a text editor to allow you to edit configuration options and files. An example of this is using the crontab command, which allows you to edit your cron jobs using the default editor.

It's really easy to set the default editor using the update-alternatives command. Open up a terminal window and type in the following command:

There are times you want to enter a single-line command to unzip all the files in a directory.  If the current directory is:

/home/timb/download/files

the command would be:

There are times when you need to route all your web traffic (http) and file transfer (ftp) traffic through a proxy.  This may be because you're in a business environment and all traffic is "inspected" prior to going to the destination site or it may be at home where you've installed proxy software to monitor the kids or block them from some web sites / ftp sites.

Setting up the information in Linux to use the proxy is as simple as adding the following lines in one of several files.