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 ...

After two and a half decades of working with Unix, I’ve seen a lot of change in my favorite OS and, at the same time, retained a number of favorite commands that continue to keep my job as a Unix ...

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 ...

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, ...

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 head, tail and more commands are among the first ten or twenty commands that most beginning Unix users are going to learn. A far more intriguing command for many of the tasks they will end up ...