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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 OSF1

cdvd

cdvd(1) 						      General Commands Manual							   cdvd(1)

NAME

       cdvd - Read Primary Volume Descriptor from a CD-ROM

SYNOPSIS

       /usr/bin/cdvd [-b] file

OPTIONS

       Copies  the  entire Primary Volume Descriptor from a CD-ROM in binary format to standard output.  Names the block special file for a CD-ROM
       File System, or a file or directory within the CD-ROM file hierarchy of a mounted CD-ROM File System.

DESCRIPTION

       The cdvd command reads the Primary Volume Descriptor from a CD-ROM and lists the contents on standard output.

       The output is formatted in a table that contains the name of each field of the Primary Volume Descriptor and the corresponding contents	of
       the entry as recorded on the CD-ROM. Note that the Application Use Field is not listed because it may contain non-printable characters.

       Users must have read permission for file in order to execute the command.

EXIT STATUS

       The  following exit values are returned: The command was successful.  The named file was not found, or was not within the CD-ROM hierarchy,
       or not a block special file for a CD-ROM File System, or access permission was denied.  The named file is a block special file and  a  read
       error has occurred, or the CD-ROM is not recorded according to the ISO 9660 standard.

SEE ALSO

       Files:  cd_cpvd(3), cd_pvd(3)

																	   cdvd(1)
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