Bash Pocket Reference: Help for Power Users and Sys Admins by Arnold Robbins PDF

By Arnold Robbins

ISBN-10: 1491941545

ISBN-13: 9781491941546

It’s basic: for you to engage deeply with Mac OS X, Linux, and different Unix-like platforms, you must know the way to paintings with the Bash shell. This concise little publication places the entire crucial information regarding Bash correct at your fingertips.

You’ll speedy locate solutions to the irritating questions that regularly arise whilst you’re writing shell scripts: What characters do you want to cite? How do you get variable substitution to do just what you will have? How do you utilize arrays? up-to-date for Bash model 4.4, this ebook has the solutions to those and different difficulties in a structure that makes looking quickly and easy.

Topics include:

  • Invoking the shell
  • Syntax
  • Functions and variables
  • Arithmetic expressions
  • Command history
  • Programmable completion
  • Job control
  • Shell options
  • Command execution
  • Coprocesses
  • Restricted shells
  • Built-in commands
  • Source: Amazon Retail AZW3

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    Additional info for Bash Pocket Reference: Help for Power Users and Sys Admins (2nd Edition)

    Sample text

    You can use this feature pack to create a security framework whose architecture is built on a hierarchal representation that matches the data access hierarchy, an array of that business entity, or a mix of the two. LBAC can also be used to restrict access to XML documents in columns (though as of the time of this writing, you cannot attach labels to fragments within the document itself). • Geodetic Data Management Feature Pack This feature pack includes the DB2 Geodetic Data Management Extender that can be used to provide advanced spatial analysis capabilities.

    Figure 1–8 Saving resources with the Database Partitioning Feature You can see that the servers comprising the partitioned database on the left side of Figure 1–8 require less memory, as each server is only responsible for 1/nth of the data. In contrast, the non-partitioned database on the right side of Figure 1–8 requires that much more memory be allocated to the buffer pool to accommodate the data. Product Overview The DB2 for Linux, UNIX, and Windows Data Server 26 Chapter 1 Product Overview Finally, DB2 can mix its intra-partition parallelism capabilities (where it runs components of an SQL statement in parallel on a single server) with its interpartition parallelism (the DPF feature) as shown in Figure 1–9.

    Replication Data Capture • 24x7 IBM Passport Advantage® support model (a special packaging of DB2 Express-C, called DB2 Express-C Fixed Term License, offers this support for Product Overview The DB2 for Linux, UNIX, and Windows Data Server 16 Chapter 1 Product Overview DB2 Express-C servers, but details on this option are outside the scope of this book). If you want to use any of these features in your environment, you need to, at a minimum, purchase DB2 Express. For the most part, all of the features found in DB2 Express-C are also available in any of the higher editions found in Figure 1–5.

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    Bash Pocket Reference: Help for Power Users and Sys Admins (2nd Edition) by Arnold Robbins


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