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Top Forums Shell Programming and Scripting Shell Programming? Post 53736 by google on Friday 23rd of July 2004 08:04:06 AM
Old 07-23-2004
Shell Programming, also commonly called shell scripting is used all across the unix landscape. It is used to control everything from the boot process, to starting/stopping daemon processes, as a wrapper around binaries, and used to create many other small stand alone procedures. Probably one of the easiest books to read and learn from is "Sams Teach Yourself Shell Programming in 24 Hours". This book starts with very basics about unix and moves quickly into shell programming - a great book for a novice. There are quite a few more advanced books out there though. Scripting also has many variants that are defined by shell that they run under, for example, Korn Shell (ksh), Bourne Shell (sh), C Shell (csh), and Bourne Again Shell (bash) to name a few. Korn shell is probably the most ubiquitous and the most powerful.
 

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platform::shell(n)					       Tcl Bundled Packages						platform::shell(n)

__________________________________________________________________________________________________________________________________________________

NAME
platform::shell - System identification support code and utilities SYNOPSIS
package require platform::shell ?1.1.4? platform::shell::generic shell platform::shell::identify shell platform::shell::platform shell _________________________________________________________________ DESCRIPTION
The platform::shell package provides several utility commands useful for the identification of the architecture of a specific Tcl shell. This package allows the identification of the architecture of a specific Tcl shell different from the shell running the package. The only requirement is that the other shell (identified by its path), is actually executable on the current machine. While for most platform this means that the architecture of the interrogated shell is identical to the architecture of the running shell this is not generally true. A counter example are all platforms which have 32 and 64 bit variants and where a 64bit system is able to run 32bit code. For these running and interrogated shell may have different 32/64 bit settings and thus different identifiers. For applications like a code repository it is important to identify the architecture of the shell which will actually run the installed packages, versus the architecture of the shell running the repository software. COMMANDS
platform::shell::identify shell This command does the same identification as platform::identify, for the specified Tcl shell, in contrast to the running shell. platform::shell::generic shell This command does the same identification as platform::generic, for the specified Tcl shell, in contrast to the running shell. platform::shell::platform shell This command returns the contents of tcl_platform(platform) for the specified Tcl shell. KEYWORDS
operating system, cpu architecture, platform, architecture platform::shell 1.1.4 platform::shell(n)
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