Bash malfunction, or something else ??

[Richard Hubbell]

Since you don't really give the details I would bet
that you're expecting cdrecord to print only on stdout but it
probably prints to stderr as well.

Capture stdout and stderr to a file and see if that is what you expect.

cdrecord -scanbus 2>&1 myfile

Richard

On Sun, 23 Jan 2005 22:44:09 -0500, David Curry <dsccable at comcast.net> wrote:
> Reference materials on commands and features of BASH that I have
> consulted include material stating that a line command in the form
> 
> $ command [options] [directory (if different than the current directory)
> ] > [filename]
> 
> will re-direct the output of the command from stdout to the named file.
> 
> In evaluating the installation of FC2 on my PC (box?), I have noticed a
> difference between outputs sent to stdout and outputs to > [filenames].
> 
> Is this a bug?
> 
> To illustrate, cdrecord -scanbus > scanbus.txt on my machine produces
> the following text file.
> 
> listing of scanbus.txt:
> Cdrecord-Clone 2.01-dvd (i686-pc-linux-gnu) Copyright (C) 1995-2004
> Jörg Schilling
> Note: This version is an unofficial (modified) version with DVD support
> 
> Note: and therefore may have bugs that are not present in the original.
> Note: Please send bug reports or support requests to http://bugzilla.redhat.com/bugzilla
> Note: The author of cdrecord should not be bothered with problems in this version.
> Using libscg version 'schily-0.8'.
> scsibus1:
>         1,0,0   100) 'ATAPI   ' 'CD-R/RW 24X10   ' 'P.MJ' Removable CD-ROM
>         1,1,0   101) 'LITEON  ' 'CD-ROM LTN301   ' 'MM07' Removable CD-ROM
>         1,2,0   102) *
>         1,3,0   103) *
>         1,4,0   104) *
>         1,5,0   105) *
>         1,6,0   106) *
>         1,7,0   107) *
> 
> Output of cdrecord -scanbus directed to stdout reads
> 
> Cdrecord-Clone 2.01-dvd (i686-pc-linux-gnu) Copyright (C) 1995-2004 Jörg Schilling
> Note: This version is an unofficial (modified) version with DVD support
> Note: and therefore may have bugs that are not present in the original.
> Note: Please send bug reports or support requests to http://bugzilla.redhat.com/bugzilla
> Note: The author of cdrecord should not be bothered with problems in this version.
> scsidev: 'ATA'
> devname: 'ATA'
> scsibus:  -2 target:  -2 lus:  -2
> Linux sg driver version: 3.5.27
> Using libscg version 'schily-0.8'.
> cdrecord:  Warning: using inofficial libscg transport code version (schily - Red Hat-scsi-linux-sg.c-1.83-RH '@(#)scsi-linux-sg.c     1.83 04/05/20 Copyright 1997 J. Schilling').
> scsibus1:
>         1,0,0   100) 'ATAPI   ' 'CD-R/RW 24X10   ' 'P.MJ' Removable CD-ROM
> cdrecord:  warning: controller returns wrong size for CD capabilities page.
>         1,1,0   101) 'LITEON  ' 'CD-ROM LTN301   ' 'MM07' Removable CD-ROM
>         1,2,0   102) *
>         1,3,0   103) *
>         1,4,0   104) *
>         1,5,0   105) *
>         1,6,0   106) *
>         1,7,0   107) *
> 
> There are six more lines of output sent to the display screen than are sent to a file via use of the > [filename] option in BASH.
> 
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