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Sun Fundamentals of Solaris 7 EU-118 Student Guide With Instructor Notes phần 2

Tham khảo tài liệu 'sun fundamentals of solaris 7 eu-118 student guide with instructor notes phần 2', ngoại ngữ, ngữ pháp tiếng anh phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | 1 The Solaris Distributed Computing Solution Shell A shell is an interface between the user and the kernel. It acts as an interpreter or translator. In other words the shell accepts commands issued by you interprets these commands and executes the appropriate programs. Three shells are available in the Solaris environment Bourne shell - The default shell for the Solaris computing environment. The Bourne shell was developed for the AT T System V.2 UNIX environment. This shell does not have aliasing or history capabilities. It is typically used by system administrators. Korn shell - A superset of the Bourne shell. It has many of the Bourne shell features plus added features such as aliasing and history. This is the industry standard for normal system users. C shell - A shell based on the C programming language. Like the Korn shell it has additional features such as aliasing and history. C shell was developed by Sun s Bill Joy for programmers but is used with increasing frequency by normal system users. Fundamentals of Solaris 7 Copyright 1999 Sun Microsystems Inc. All Rights Reserved. Enterprise Services August 1999 Revision D 1-12 1 The Solaris Distributed Computing Solution Shell Note - Examples given in this course are primarily based on the Korn shell. Figure 1-3 Solaris Environment Shells Solaris Computing Environment 1-13 Copyright 1999 Sun Microsystems Inc. All Rights Reserved. Enterprise Services August 1999 Revision D 1 F Sun Educational Services The File System A hierarchy of directories subdirectories and files grouped together for a specific purpose. Directory - A location for other files and directories. The directory structure enables you to create files and directories accessed through a hierarchy of directories. Subdirectory - Any directory below another directory. For example some of the subdirectories under the root directory are usr etc and kernel. The Solaris Distributed Computing .