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Full Discussion: Learning to program in c
Top Forums Programming Learning to program in c Post 8452 by rwb1959 on Thursday 11th of October 2001 05:42:02 PM
Old 10-11-2001
You might try writing a simple shell (command line interpreter).
Start with the basics...
read line input
execute the request

...then add more functionality
parse "special" characters in the line input
(i.e. I/O redirection)

add built-ins
etc, etc...
 

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line(1)                                                            User Commands                                                           line(1)

NAME
line - read one line SYNOPSIS
line DESCRIPTION
The line utility copies one line (up to and including a new-line) from the standard input and writes it on the standard output. It returns an exit status of 1 on EOF and always prints at least a new-line. It is often used within shell files to read from the user's terminal. EXIT STATUS
Exit status is: 0 Successful completion >0 End-of-file on input. ATTRIBUTES
See attributes(5) for descriptions of the following attributes: +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |Availability |SUNWcsu | +-----------------------------+-----------------------------+ SEE ALSO
sh(1), read(2), attributes(5) SunOS 5.10 1 Feb 1995 line(1)
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