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Top Forums Programming Terminal emulator from scratch. Post 302504128 by Corona688 on Sunday 13th of March 2011 06:53:09 PM
Old 03-13-2011
You having put it in quote tags instead of code tags means I can't even quote it to get the program with sane indentation and must do it all by hand.. I'll take a look ati t...

---------- Post updated at 04:53 PM ---------- Previous update was at 04:45 PM ----------

Your program actually worked without modification, first try:
Code:
$ ./a.out /bin/cat 
./a.out: Starting [/bin/cat]...
./a.out: OUTPUT of PROGRAM B is: 
fake input
��
$

...though you forget to null-terminate your read string, read doesn't do that for you!
Code:
...
                line[rv]='\0';
                error(0,0,"OUTPUT of PROGRAM B is: \n%s", line);

Code:
$ ./a.out /bin/cat
$ ./a.out /bin/cat 
./a.out: Starting [/bin/cat]...
./a.out: OUTPUT of PROGRAM B is: 
fake input
$

And depending on your system the pipe may actually buffer and wait forever. You should close() the pipe after you're done writing to it, to force it to send the stuff along before you try and read() from the other pipe.
 

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gnomevfs-cat(1) 						   User Commands						   gnomevfs-cat(1)

NAME
gnomevfs-cat - print a file to standard output using the VFS system SYNOPSIS
gnomevfs-cat URI DESCRIPTION
gnomevfs-cat is obsolete. It has been superseded by gvfs-cat. See gvfs-cat(1). gnomevfs-cat prints a file to standard output using the virtual file system to access the file via a URI. OPERANDS
The following operands are supported: URI Specifies the file location in standard URI format. EXAMPLES
Example 1: Cat a File From a Web Server example% gnomevfs-cat http://www.sun.com Example 2: Cat a Local File example% gnomevfs-cat file:///home/user/README.txt ENVIRONMENT VARIABLES
See environ(5) for descriptions of the following environment variables: NLSPATH. EXIT STATUS
The exit value 0 is returned regardless of success or failure. FILES
The following files are used by this application: /usr/bin/gnomevfs-cat Executable to print a file to standard output using the VFS system ATTRIBUTES
See attributes(5) for descriptions of the following attributes: +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |Availability |SUNWgnome-vfs | +-----------------------------+-----------------------------+ |Interface stability |Obsolete Volatile | +-----------------------------+-----------------------------+ SEE ALSO
gnomevfs-copy(1), gnomevfs-info(1), gnomevfs-ls(1), gnomevfs-mkdir(1), gvfs-cat(1), attributes(5), environ(5) NOTES
Written by Stephen Browne, Sun Microsystems Inc., 2004. SunOS 5.11 14 May 2008 gnomevfs-cat(1)
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