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Full Discussion: Cat/File Descriptor Question
Homework and Emergencies Homework & Coursework Questions Cat/File Descriptor Question Post 302993034 by Don Cragun on Monday 6th of March 2017 03:00:33 AM
Old 03-06-2017
Assuming that the file memo is a non-empty text file containing:
Code:
1
3
5
6
4
2

and that there is no file named none, what output would you expect to get in the files named save1, save2, and letter if you were to run the pipeline:
Code:
cat memo none 2>save1 | sort - none 2>save2 > letter

? If you then actually run this pipeline with the input files set up as described above, did you get the output you expected? If not, what did you get and what did you expect to get?
 

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LEARN ABOUT SUNOS

gnomevfs-cat

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 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	     |External			   |
       +-----------------------------+-----------------------------+

SEE ALSO

       gnomevfs-copy(1), gnomevfs-info(1), gnomevfs-ls(1), gnomevfs-mkdir(1)

NOTES

       Written by Stephen Browne, Sun Microsystems Inc., 2004.

SunOS 5.10							    6 Sep 2004							   gnomevfs-cat(1)
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