UNIX for Open: VMS Users by Philip Bourne, Richard Holstein and Joseph McMullen (Auth.)

By Philip Bourne, Richard Holstein and Joseph McMullen (Auth.)

UNIX for OpenVMS clients, 3E, makes it effortless to work out what OpenVMS and UNIX have in universal, and to move your wisdom and adventure in OpenVMS over to the realm of UNIX.

Since most department stores depend on a couple of working procedure, it's severe for method directors and bosses to appreciate the similarities and ameliorations among systems, to allow them to simply paintings in either environments whereas taking complete benefit of the instruments and functions on hand on each one. This booklet deals OpenVMS pros a concise resource of data, so we can quick convey their services to endure on UNIX dossier administration, electronic mail, networking, and security.

This re-creation of the ebook is better with up to date references to VMS, accommodates feedback made via readers of earlier variants, and especially, acknowledges different UNIX implementations as well as HP's Tru64.

· contains large additions to the sections on VMS logical names, at the emacs editor, and on shell programming and Perl
· Describes the interfaces universal to either working structures, with appendices overlaying command and editor summaries
· provides emphasis on Linux

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Numerous examples of these concepts appear in Chapter 4. Fourth, the novice UNIX user must understand the concept of metacharacters, which have special functions when interpreted by the shell. We met several metacharacters in this chapter. 5 introduces the use of metacharacters for the recall and editing of command lines, known as history substitution. 3 Getting Started I was thinking that all these tables [pointing to some logarithms] might be calculated by machinery. --Charles Babbage You are now ready to begin a terminal session.

The - r switch tells d i s k l a b e l t o access the disk directly for information, rather than relying on information cached in the operating system; rz6 names the disk unit. The RZ29B can be formatted either as a single partition c, as four partitions a, b, g, and h, or as five partitions, a, b, d, e, and f. Note how those combinations are chosen: Within each, the partitions do not overlap. Other versions of UNIX partition a disk drive similarly, but use numbers to identify the partitions, instead of letters.

In UNIX, on the other hand, commands are case-sensitive, and most are lowercase. The shell will not understand commands given in the wrong case. Make sure that the caps lock key has not been depressed when beginning a UNIX terminal session. Filenames are also case-sensitive. For example, UNIX interprets m y f i l e . d a t as a different file from I~FIV,~.. DA% In fact, commands are filenames (except for a relatively few commands built into the shells; see Chapter 8), and the shell looks for a file with the same name as the command in a search list of directories in order to execute that command.

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