Bash Pocket Reference: Help for Power Users and Sys Admins - download pdf or read online

By Arnold Robbins

ISBN-10: 1491941561

ISBN-13: 9781491941560

It s easy: with a view to have interaction deeply with Mac OS X, Linux, and different Unix-like structures, you must know the way to paintings with the Bash shell. This concise little ebook places all the crucial information regarding Bash correct at your fingertips.

You ll fast locate solutions to the irritating questions that typically arise for those who re writing shell scripts: What characters do you want to cite? How do you get variable substitution to do just what you will want? How do you utilize arrays?

Updated for Bash model 4.4, this e-book has the solutions to those and different difficulties in a layout that makes looking quickly and easy.

Topics contain:
• Invoking the shell
• Syntax
• capabilities and variables
• mathematics expressions
• Command history
• Programmable completion
• task control
• Shell options
• Command execution
• Coprocesses
• constrained shells
• integrated commands"

Show description

Read Online or Download Bash Pocket Reference: Help for Power Users and Sys Admins (2nd Edition) PDF

Best unix books

Get bash Cookbook: Solutions and Examples for bash Users PDF

The major to gaining knowledge of any Unix procedure, in particular Linux and Mac OS X, is an intensive wisdom of shell scripting. Scripting is the way to harness and customise the ability of any Unix procedure, and it's a vital ability for any Unix clients, together with approach directors OS X builders.

Teach Yourself Perl 5 in 21 Days by David Till PDF

Sams educate your self Perl five in 21 Days is the suitable booklet for amateur and intermediate point clients who are looking to achieve a fantastic figuring out of this programming language. utilizing step by step tutorials, you will examine every thing you must learn about this renowned programming language. realize the right way to manage textual content, generate reviews, and practice procedure projects.

Download PDF by Bill Calkins: Solaris 9 System Administration Training Guide (Exam

Writer invoice Calkins is the top voice of this undefined, and he is once more introduced the fitting learn spouse for UNIX approach pros getting ready for the Solaris nine process Administrator checks (310-014 and 310-015). Readers getting ready for this examination locate our education advisor sequence to be the best self-study instrument available in the market.

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

Sample text

CHILD_MAX=n Set the maximum number of child processes for which the shell will remember exit statuses. The maximum is 8192; the minimum is system-dependent. COLUMNS=n Screen’s column width; used in line edit modes and select lists. Defaults to current terminal width. COMPREPLY=(words …) Array variable from which Bash reads the possible completions generated by a completion function. EMACS If the value starts with t, Bash assumes it’s running in an Emacs buffer and disables line editing. ENV=file Name of script that is executed at startup in POSIX mode or when Bash is invoked as /bin/sh; useful for storing alias and function definitions.

COMP_KEY For programmable completion. The key, or final key in a sequence, that caused the invocation of the current completion function. COMP_LINE For programmable completion. The current command line. COMP_POINT For programmable completion. The position of the cursor as a character index in $COMP_LINE. COMP_TYPE For programmable completion. A character describing the type of programmable completion. The character is one of Tab for normal completion, ? for a completions list after two Tabs, ! for the list of alternatives on partial word completion, @ for completions if the word is modified, or % for menu completion.

The Bourne shell allows only nine parameters to be referenced directly (n = 1–9); Bash allows n to be greater than 9 if specified as ${n}. $*, $@ All arguments on the command line ($1 $2 …). "$*" All arguments on the command line as one string ("$1 $2…"). The values are separated by the first character in $IFS. "$@" All arguments on the command line, individually quoted ("$1" "$2" …). 32 | The Bash Shell Bash automatically sets the following additional variables:2 $_ Temporary variable; initialized to the pathname of the script or program being executed.

Download PDF sample

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

by Christopher

Rated 4.02 of 5 – based on 16 votes