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Full Discussion: Boy, is the shell powerful.
The Lounge What is on Your Mind? Boy, is the shell powerful. Post 302803337 by wisecracker on Monday 6th of May 2013 12:13:44 PM
Old 05-06-2013
Hi Corona688...
Quote:
Second, the shell is a good interface to the UNIX system, but a poor interface to other systems where not everything is a file... Imagine you didn't have utilities like SOX or an external /dev/dsp, how simple would your oscilloscope be then?
I would have to develop the hardware to suit an existing port.
Like this for example using the AMIGA A2100 parallel port;
It is a GIF animation of such an animal that required HW to be built using standard tools...

http://wisecracker.host22.com/public/SCOPE.GIF

The whole project required 4 AMIGA floppies and is PD on AMINET.
Quote:
Another thing the shell is poor at is performance. It's great at summoning other programs to do its work for it... not the greatest if you have to sum 3 million numbers in a flash with no outside help.
I found this type of limitation using RANDOM which is why I switched to /dev/urandom instead.

Quote:
Also, you are using nonstandard capabilities of the BASH shell (i.e. dealing with binary data). Imagine you were forced to use an ancient bourne shell, not bash. I don't think you'd consider it quite as fantastic.
Already in that situation with the AMIGA shell. Found a solutuon and created an execuatble from it...

Aminet - dev/src/Filter.shell.txt

There is always a back door... <wink - wink>
 

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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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