[PLUG] Bash script question

[Rogan Creswick]

standard out (general output) and standard error (error output) are
treated differently.  To redirect stderr, you need to use 2>, instead
of > Here's an example that should do what you want (note, untested!):

#!/bin/bash

RDIFF=rdiff-backup
EXCLUDE_LIST=/home/jjj/rdiff_excludes.txt
SOURCE=/
DEST=/media/disk2/Full_system_backup
ERR_OUT=/home/jjj/rdiff-errors.txt
OUT=/home/jjj/rdiff-output.txt

STATS=/home/jjj/rdiff-stats.txt

$RDIFF --include-globbing-filelist $EXCLUDE_LIST $SOURCE $DEST 2>
$ERR_OUT > $OUT
$RDIFF --list-increment-sizes $DEST > $STATS

Note that you should be able to run this script with "sudo
<scriptname>" rather than using sudu within the script (which may stop
and ask for a password).

--Rogan

On Sat, Jun 27, 2009 at 4:16 PM, John Jason Jordan<johnxj at comcast.net> wrote:
> I'm sure this is trivial for most people here, but man bash is massive
> and I can't figure it out.
>
> In an effort to bend rdiff-backup to my will I have created the
> following script:
>
> #!/bin/bash
> sudo rdiff-backup --include-globbing-filelist /home/jjj/rdiff_excludes.txt / /media/disk2/Full_system_backup > /home/jjj/rdiff-errors.txt
> sudo rdiff-backup --list-increment-sizes /media/disk2/Full_system_backup > /home/jjj/rdiff-stats.txt
>
>
> The first line runs the backup. The second line obtains statistics
> about the backup.
>
> When running the backup several error messages are generated. I want
> these saved to a file. I also want the statistics in the second line
> written to a file.
>
> The statistics are going to the specified file perfectly. However, the
> error messages generated when the backup is run are just being
> displayed in a terminal window and not going to the file. When the
> script ends the terminal window disappears. taking the error messages
> with it. (I can see them if I watch while it is running.) The command
> does create the rdiff-errors.txt file, but it has -0- bytes.
>
> The question is how to modify the "> /home/jjj/rdiff-errors.txt" part
> of the first line so it sends the error messages to the file?
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