While the average Unix user is generally satisfied by the date/time stamps that he sees when using the ls -l command, it is sometimes useful to remember that there are actually several time stamps ...

Solaris and other SVR4 versions of Unix provide file sharing through NFS and the /etc/dfs/dfstab file. The syntax of this particular file permits you to restrict file system sharing to a limited ...

Maybe you're married to Microsoft Exchange, but you secretly pine for open-source e-mail tools like SpamAssassin or fetchmail. Or maybe you're using Unix-based applications for some network services, ...

Secure Copy is a UNIX standard used to transfer files from one computer to another. He's how to use the function in macOS, all via the Terminal window. Before personal computers, there were mainframe ...

The fuser (pronounced “ef-user”) command is a very handy command for determining who is currently using a particular file or directory. If one user can’t access a file because another user has it ...

If you use Windows today and type ls, cat, grep, or awk in a terminal, there is a good chance something useful will happen. That was not always true. For most of the history of personal computing, ...