Login or Register to Ask a Question and Join Our Community

Sponsored Content
Full Discussion: Question about Shell Programming
Top Forums Shell Programming and Scripting Question about Shell Programming Post 18159 by AtleRamsli on Monday 25th of March 2002 08:54:48 AM
Old 03-25-2002
The question of what is 'programming' or not is actually quite interesting.
The autors of Beta (www.mjolner.com - look for Beta, Solaris or Linux version) say that everything relating to system development is programming, including drawing up UML diagrams, doing object analysis, even requirements alalysis.
This is why their Mjølner system can be programmed using UML diagrams (the object analysis part,anyway). If shell programming is not programming, then what is?
The only difference between a shell script and a binary is in the way it is being executed - completely transparent to both programmer and user.
If interpreted programs were not 'real' programs, then what to say about Java? Java programs are interpreted /and/ compiled!
In fact, there is nothing that stops you from writing a compiler for you shell script and running it as a binary ... or running a C-program in an interpreter.
I know what this is about: What is the most macho programming one can do?
Answer: cat > prg.
Then enter the ASCII codes that correspond to the CPU instructions you want executed, if one of them is 0x4 then you can not continue, MOV store to accumulator on a 16-bit ISA PC system, fx. is in binary 1010000wLLLLHHHH, you fill in the operands, look up the corresponding ASCII characters, and write them into the file after the ELF header and stuff. That way, you can run 'arbitrary code' on a Linux system with only cat and write permissions as your tools. You don't get more macho than that, but is it 'programming'?
Sure!
Is it 'serious programming' - no way!
 

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

Post Shell programming: Question about source a file and read data from the file

This is shell programming assignment. It needs to create a file called .std_dbrc contains STD_DBROOT=${HOME}/class/2031/Assgn3/STD_DB (which includes all my simple database files) and I am gonna use this .std_dbrc in my script file (read the data from the database files) like this: .... (3 Replies)
Discussion started by: ccwq
3 Replies

2. Shell Programming and Scripting

question about about Shell programming

1.if 2.then 3. # save the number of args and first argument in variables. 4. num_args=$# 5. id="$1" 6. echo "$id" 7. #echo "$1" > crapfile.txt 8. echo `sed 's/\*/'\*'/g' < crapfile.txt` Above is a partial code.I would like to ask: at line 1:... (1 Reply)
Discussion started by: thungmail
1 Replies

3. Shell Programming and Scripting

question about testing in shell programming

I created a file named q2.c in /home/tuan/Desktop/Shell_programming. I coded a script named "test" to check whether the file existed or not. My code : #!/bin/sh submitDir=/home/tuan/Desktop/Shell_programming/submit if then echo "There is no q2.c" else echo "There is q2.c" fi After... (3 Replies)
Discussion started by: thungmail
3 Replies

4. Shell Programming and Scripting

question about testing in shell programming

Hi i would like to write a "script" which takes a directory as an argument and the script will output the content of a file in this directory.Here is my code #!/bin/sh #set an argument to be a specified path $1=/home/tuan/Desktop/Shell_programming/directory #check if an argument is a... (3 Replies)
Discussion started by: thungmail
3 Replies

5. Shell Programming and Scripting

question about testing in shell programming

I have 2 different directories. The first has 2 sub-folders A and B. The second as 2 sub-folders C and D and script named "script".There is a code of "script" to list 2 sub-folders C and D #!/bin/sh for file in * do && echo $file done I would like to ask how can I make a change if I... (2 Replies)
Discussion started by: thungmail
2 Replies

6. Shell Programming and Scripting

question about testing in shell programming(modifications were made)

In folder A i have a file "a' and text file named infile00.I would like to do redirection :a<infile01. There is a code to do this #get a file "a" in /home/A for file in /home/A/* do if $file ] then #printing out if file is an execute file echo $file "is an... (2 Replies)
Discussion started by: thungmail
2 Replies

7. Shell Programming and Scripting

question about testing in shell programming

In folder A i have a file "a' and text file named infile00.I would like to do redirection :a<infile01. There is a code to do this #get a file "a" in /home/A for file in `ls /home/A` do if then #printing out if file is an execute file echo $file "is an execute... (6 Replies)
Discussion started by: thungmail
6 Replies

8. Shell Programming and Scripting

Beginner Shell Programming Question

Hello all, I am currently try to learn the linux operating system as well as some bash programming. I have come across some online course work which has been very helpful, I have been working through some assignments and since I have no teacher to ask I have come to you experts. So the... (6 Replies)
Discussion started by: g2axiom
6 Replies

9. Shell Programming and Scripting

Plz Help Me in This question in Shell Programming

2- Write a bash shell script filestatic. The script should examine the number files in directories given as arguments (parameters) to this script. a. if one argument is given, the script should count and report the number of files in this directory. Only regular files should be counted, not... (1 Reply)
Discussion started by: tahseen_22334
1 Replies

10. Homework & Coursework Questions

Plz Help Me in This question in Shell Programming

2- Write a bash shell script filestatic. The script should examine the number files in directories given as arguments (parameters) to this script. a. if one argument is given, the script should count and report the number of files in this directory. Only regular files should be counted, not... (1 Reply)
Discussion started by: tahseen_22334
1 Replies

LEARN ABOUT NETBSD

atf

ATF(7)						       BSD Miscellaneous Information Manual						    ATF(7)

NAME

     ATF -- introduction to the Automated Testing Framework

DESCRIPTION

     IMPORTANT: If you are here because you want to know how to run the tests in /usr/tests, you most likely want to read the tests(7) manual page
     instead.

     The Automated Testing Framework (ATF) is a collection of libraries and utilities designed to ease unattended application testing in the hands
     of developers and end users of a specific piece of software.

     As regards developers, ATF provides the necessary means to easily create test suites composed of multiple test programs, which in turn are a
     collection of test cases.	It also attempts to simplify the debugging of problems when these test cases detect an error by providing as much
     information as possible about the failure.

     As regards users, it simplifies the process of running the test suites and, in special, encourages end users to run them often: they do not
     need to have source trees around nor any other development tools installed to be able to certify that a given piece of software works on
     their machine as advertised.

     If your operating systems distributes ATF, it is possible that it provides an introductory tests(7) manual page.  You are encouraged to read
     it now.

   License
     ATF is distributed under the terms of the TNF License, a 2-clause BSD license.  For more details please see:

	   /usr/share/doc/atf/COPYING

   Components
     ATF is a highly modular piece of software.  It provides a couple of libraries to ease the implementation of test programs: one for the C and
     C++ languages and another one for shell scripts.  It also includes multiple small utilities that follow the principle of doing a single thing
     but doing it right.  This section outlines which these components are.

     Public utilities:

     atf-check(1)	    Executes a command and checks that its exit code, its standard output and its standard error output match pre-speci-
			    fied expected values.

     atf-config(1)	    Queries static configuration information.

     atf-report(1)	    Converts the output of atf-run to user-friendly and/or machine-parseable reports.

     atf-run(1) 	    Automates the execution of a series of test programs and collects their results in a unified report.

     atf-sh(1)		    Shell interpreter for shell-based test programs.

     Programming interfaces:

     atf-c-api(3)	    C programming interface for test programs.

     atf-c++-api(3)	    C++ programming interface for test programs.

     atf-sh-api(3)	    POSIX shell programming interface for test programs.

     Other:

     atf-formats(5)	    Description of the machine-parseable data formats used by the tools.

     atf-test-case(4)	    Generic description of test cases, independent of the language they are implemented in.

     atf-test-program(1)    Common interface provided by the test programs written using the ATF libraries.

   Recommended reading order
     For end users wishing to run tests:
     1.   tests(7) (only if provided by your operating system).
     2.   atf-test-program(1)
     3.   atf-run(1)
     4.   atf-report(1)
     5.   atf-config(1)

     For developers wanting to write their own tests:
     1.   Everything recommended to users.
     2.   atf-test-case(4)
     3.   atf-c-api(3)
     4.   atf-c++-api(3)
     5.   atf-sh-api(3)
     6.   atf-sh(1)
     7.   atf-check(1)

     For those interested in ATF internals:
     1.   Everything recommended to users.
     2.   Everything recommended to developers.
     3.   atf-formats(5)

SEE ALSO

     tests(7)

HISTORY

     ATF started as a Google Summer of Code 2007 project mentored by The NetBSD Foundation.  Its original goal was to provide a testing framework
     for The NetBSD Operating System, but it grew as an independent project because the framework itself did not need to be tied to a specific
     operating system.

     For more details on this subject, please see:

	   /usr/share/doc/atf/NEWS
	   /usr/share/doc/atf/ROADMAP

AUTHORS

     For more details on the people that made ATF possible, please see:

	   /usr/share/doc/atf/AUTHORS

BSD
								  August 28, 2010							       BSD
All times are GMT -4. The time now is 04:37 AM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy