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Old 06-23-2004, 07:33 AM   #1
dennis_89
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tar options


I am running a backup script using tar. I am trying to set the option to update, but I am getting the error

tar: options 'Aru' are incompatible with '-f-'

the script I am using is:

tar uvpz $DRIVE/$TARGET_MACHINE > laptop.tar.gz
rm -rf $DRIVE/$TARGET_MACHINE

when I use:

tar cvpz $DRIVE/$TARGET_MACHINE > laptop.tar.gz
rm -rf $DRIVE/$TARGET_MACHINE

with the c instead of the u, everything works ok, it just does the full backup. Does anyone have any idea how to change this? I have already looked at the help for tar but it didn't help me.

Cheers,

Dennis
 
Old 06-23-2004, 07:50 AM   #2
320mb
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did you read the man page??
http://man.linuxquestions.org/index....ction=0&type=2

Code:
man tar
 
Old 06-23-2004, 08:00 AM   #3
dennis_89
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yup and as you can see the options are set right as tar uvpz

any other suggestions or am I missing something??
 
Old 06-23-2004, 08:35 AM   #4
whansard
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redirecting the output is about the same as using f. maybe tar can't update a file. you should use something like dar.
 
Old 06-23-2004, 09:17 AM   #5
dennis_89
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tar should be able to update though, the option is there
 
Old 06-23-2004, 09:24 AM   #6
linmix
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Dunno much about scripts, but I've used tar from tha command line and got an error when using several parameters. When I changed the order of the parametres everything went fine... might just work in your case.
 
Old 06-23-2004, 09:49 AM   #7
whansard
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tar: options 'Aru' are incompatible with '-f-'

tar told him he can't update with f. i'm guessing you can only update with a tape, which is what tar was made for.

here's how.
http://www-es.fernuni-hagen.de/cgi-b...%20to%20update
 
Old 06-23-2004, 12:23 PM   #8
david_ross
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Moved: This thread is more suitable in Linux General and has been moved accordingly to help your thread/question get the exposure it deserves.
 
  


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