Multi session dvd using cdrecord Post: 302574624

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Top Forums UNIX for Advanced & Expert Users Multi session dvd using cdrecord Post 302574624 by jgt on Thursday 17th of November 2011 06:22:33 PM

11-17-2011

Registered User

Multi session dvd using cdrecord

I wrote the following script after reading a tutorial, but...

Code:

#!/usr/bin/ksh                                      
DATE=`date +"%y%m%d%H%M"`                           
echo $DATE                                          
FILENAME=`echo "obase = 16\n $DATE"|bc`             
echo $FILENAME                                      
cd /                                                
tar ctvf /home/$FILENAME.tar u >/dev/null           
cd /home                                            
gzip $FILENAME.tar                                  
mv $FILENAME.tar.gz $FILENAME.tgz                   
POSITION=`cdrecord -msinfo`                         
echo $POSITION                                      
mkisofs -o $FILENAME.iso -C $POSITION $FILENAME.tgz 
cdrecord -sao -multi $FILENAME.iso

but when I run

Code:

cdrecord -msinfo

afterwards, it always says 0,0
The media is DVD-RW
What I had hoped would happen is that the latest backup would be appended to the dvd.

jgt

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setusershell

getusershell(3C)					   Standard C Library Functions 					  getusershell(3C)

NAME

       getusershell, setusershell, endusershell - get legal user shells

SYNOPSIS

       #include <unistd.h>

       char *getusershell(void);

       void setusershell(void);

       void endusershell(void);

DESCRIPTION

       The  getusershell()  function  returns  a  pointer  to  a  legal  user  shell  as defined by the system manager in the file /etc/shells. If
       /etc/shells does not exist, the following locations of the standard system shells are used in its place:

	 /bin/bash		    /bin/csh
	 /bin/jsh		    /bin/ksh
	 /bin/ksh93		    /bin/pfcsh
	 /bin/pfksh		    /bin/pfsh
	 /bin/sh		    /bin/tcsh
	 /bin/zsh		    /sbin/jsh
	 /sbin/pfsh		    /sbin/sh
	 /usr/bin/bash		    /usr/bin/csh
	 /usr/bin/jsh		    /usr/bin/ksh
	 /usr/bin/ksh93 	    /usr/bin/pfcsh
	 /usr/bin/pfksh 	    /usr/bin/pfsh
	 /usr/bin/sh		    /usr/bin/tcsh
	 /usr/bin/zsh		    /usr/sfw/bin/zsh
	 /usr/xpg4/bin/sh

       The getusershell() function opens the file /etc/shells, if it exists, and returns the next entry in the list of shells.

       The setusershell() function rewinds the file or the list.

       The endusershell() function closes the file, frees any memory used by getusershell() and setusershell(), and rewinds the file /etc/shells.

RETURN VALUES

       The getusershell() function returns a null pointer on EOF.

BUGS

       All information is contained in memory that may be freed with a call to endusershell(), so it must be copied if it is to be saved.

NOTES

       Restricted shells should not be listed in /etc/shells.

SunOS 5.11							    1 Nov 2007							  getusershell(3C)