You have thousands of commands at your disposal as a Unix administrator. However, even the most advanced administrators only use a finite number of tools and utilities on an ongoing basis. The ...

Last week’s column introduced NTP, the Network Time Protocol and the concept of highly accurate timekeeping. While numerous commands exist to help system administrators maintain fairly accurate time ...

Unix sysadmins routinely use the “ifconfig -a” command to list network parameters associated with their systems. In particular, they use this command to determine the IP address, netmask and broadcast ...

The UNIX ping command lets you test network servers and latency. Here's how to use it in the macOS Terminal app. The UNIX ping command is a tiny UNIX network tool that allows you to test your network, ...

The answer, of course, is to use rm -rf commands, but this isn’t immediately obvious until you’ve run into this problem half a dozen times. Another problem I’ve seen Unix newbies run into a lot is ...

Is there a command in Unix, but in OS X in particular, which will display the IPs of all the machines in a LAN? And if so, is there a GUI version of said program? If such program exists, what would ...