host-name

The name of any host from the /etc/hosts ®le. AS/400 does not support the /etc/hosts ®le as a separate integrated ®le system ®le. The/etc/hosts

is built in to AS/400 TCP/IP support.

user-name

The name of any user from the /etc/passwd ®le. AS/400 does not support the /etc/passwd ®le concept.

domain-name

The name of any domain.

On AS/400, the following format rules apply to netgroups:

1.All entries are ended by the end of a line.

2.The continuation character '\' can be used to extend one entry across multiple lines when it is the last character in the line.

3.All characters following the pound sign '#' are considered comments until the end of the line.

4.In the triple (host-name,user-name,domain-name) only the host-name is recognized. Any value supplied for user-name or domain-name will be ignored.

5.Commas ',' should be used to separate elements in a list.

6.A blank host-name will not be considered as a wild-card. There is no wild-card support.

7.Blanks are allowed anywhere except within a netgroup-name or a host-name.

8.Imbedded hexadecimal characters are not allowed.

9.No control-characters are allowed (this includes any characters below ASCII x020).

10.Entries are not case-sensitive.

11.Triplets (x,y,z) (a,b,c) may be separated by spaces or commas only.

 

/etc/rpcbtab File

 

This ®le is used by the RPC binder (port mapper) daemon. Information for all

 

daemons is stored in this ®le, which is used to register daemons upon recovery of

an RPC binder (port mapper) daemon crash.

Note: It is recommended that users never write to or change the /etc/rpcbtab ®le.

 

 

/etc/statd File

 

 

This ®le is used exclusively by the server Network Status Monitor daemon. This ®le

 

stores information about any clients that hold byte-range locks on open server ®les.

 

When a user starts the NSM daemon after a crash, the NSM daemon contacts all

 

the clients listed in this ®le so that the clients can release any locks they hold on

 

the server.

 

Note: It is recommended that users never write to or change the /etc/statd ®le.

Appendix B. Understanding the /etc Files 97

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IBM AS/400E manual Etc/rpcbtab File, Etc/statd File, Host-name, User-name, Domain-name
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AS/400E specifications

The IBM AS/400E, now more commonly known as IBM i, is a robust and versatile midrange server that has been designed to provide a comprehensive computing solution for businesses of all sizes. First introduced in the late 1980s, the AS/400 series has undergone multiple enhancements and rebranding, with the AS/400E being one of the notable iterations. This powerful platform is closely associated with IBM's commitment to reliability, scalability, and integrated business solutions.

One of the main features of the AS/400E is its highly integrated architecture that combines hardware and software into a cohesive system. This integration allows for seamless operations, reducing the complexity typically associated with managing disparate systems. The system is powered by IBM's proprietary OS/400 operating system, which has evolved into IBM i, featuring advanced capabilities like object-oriented programming, integrated database management, and security features that are essential for enterprise environments.

A key characteristic of the AS/400E is its robust database support, primarily through the use of DB2 for i. This integrated database management system enables efficient data handling and retrieval, facilitating real-time business analytics and reporting. Furthermore, the platform supports a variety of programming languages, including RPG, COBOL, and Java, making it flexible for developers who require diverse tools for application development.

The AS/400E is also known for its exceptional reliability and uptime, making it a preferred choice for critical business applications in industries such as finance, healthcare, and manufacturing. This reliability is backed by advanced error detection and correction mechanisms, as well as redundancy features that help prevent data loss and minimize downtime.

In terms of scalability, the AS/400E can effortlessly expand to accommodate growing business demands. Organizations can increase processing power by adding more resources without significant disruption. This scalability, combined with the system’s built-in virtualization capabilities, allows businesses to optimize resource usage and streamline operations.

Security is another defining feature of the AS/400E. The platform incorporates various layers of security measures, including user authentication, encryption, and comprehensive auditing capabilities, ensuring that sensitive business data is protected against unauthorized access.

Overall, the IBM AS/400E remains a powerful tool in the enterprise computing landscape, providing businesses with an integrated, reliable, and secure solution for their technological needs. Its enduring popularity is a testament to its capability to evolve with changing business requirements while maintaining its core attributes of high performance and stability.
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