Shell basics The Unix command line shell is roughly equivalent to the command window in Microsoft Windows (cmd or PowerShell). The commands we walk through below will work on any Unix-like system ...

While today’s Unix systems primarily store configuration files and system start-up files in /etc, the focus in those early days seems to have been on the characterization of these files as being ...

When I prepare a file system summary report on Unix, a handful of Unix commands easily provide some very useful statistics. To count the files in a directory, you can use a find command like this.

The first thing this particular script does is request that the user select the file system that he is concerned about. We do this with a select statement. However, to ensure that we are looking ...

IBM's UNIX System Services implements a directory-based file system that is very similar to the file systems used in UNIX. The SAS System under OS/390 enables you to read and write UNIX System ...

If you're new to the UNIX operating system, especially if you're familiar with Windows, you'll find that the file access control mechanisms might not be exactly what you expect.

If the X statement does not specify a command, the SAS System ignores the statement. If any UNIX command in the X statement attempts to get input, it receives an end-of-file (standard input is set to ...