By Chris Johnson, Jayant Varma
Seasoned Bash Programming teaches you the way to successfully make the most of the Bash shell on your programming. The Bash shell is an entire programming language, no longer purely a glue to mix exterior Linux instructions. via taking complete good thing about Shell internals, Shell courses can practice as snappily as utilities written in C or different compiled languages. and you may see how, with out assuming Unix lore, you could write specialist Bash 4.3 courses via normal programming techniques.
This moment variation has up to date for Bash 4.3, and plenty of scripts were rewritten to cause them to extra idiomatically Bash, taking larger benefit of positive factors particular to Bash. you can learn, comprehend, and may train you ways to become familiar with Bash programming with out drowning you in pages and pages of syntax.
Using this publication it is possible for you to to exploit the shell successfully, make scripts run speedier utilizing growth and exterior instructions, and know how to beat many universal errors that reason scripts to fail. This ebook is ideal for all starting Linux and Unix approach directors who are looking to be in complete regulate in their platforms, and very become familiar with Bash programming.
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Additional resources for Pro Bash Programming: Scripting the GNU/Linux Shell (2nd Edition)
1. Data is stored on these platters in a cylindrical pattern. Cylinders can be grouped and isolated from one another. A group of cylinders is referred to as a slice. A slice is defined with start and end points, defined from the center of the stack of platters, which is called the spindle. 1. Disk platters and cylinders. 58 Part I: Exam Preparation Part I: Exam Preparation 59 Disk slices are defined by an offset and a size in cylinders. The offset is the distance from cylinder 0. To define a slice, the administrator provides a starting cylinder and an ending cylinder.
The header and trailer contain error-checking information to help ensure the accuracy of the data. Taken together, the set of tracks traced across all the individual disk platter surfaces for a single position of the heads is called a cylinder. Disk Controllers Associated with every disk is a controller, an intelligent device responsible for organizing data on the disk. Some disk controllers are located on a separate circuit board, such as SCSI. Other controller types are integrated with the disk drive, such as Integrated Device Electronics (IDE) and Enhanced IDE (EIDE).
Repair a file system. 3. 3. Device Directories Directory /dev/dsk /dev/rdsk /dev/rmt /dev/term /dev/cua /dev/pts /dev/fbs Part I: Exam Preparation Description Contents Block interface to disk devices Raw or character interface to disk devices Tape device Serial line devices Dial-out modems Pseudo terminals Frame buffe 51 52 Part I: Exam Preparation STREAMS administrative driver Metadevices managed by Solaris Volume Manager (SVM) Devices managed by Veritas Volume Manager /dev/sad /dev/md /dev/vx Block and Raw Devices Disk drives have an entry under both the /dev/dsk and /dev/rdsk directories.
Pro Bash Programming: Scripting the GNU/Linux Shell (2nd Edition) by Chris Johnson, Jayant Varma