Hi list,
An?bal Pacheco wrote on 27.11.2006 at 18:02:59 [[BackupPC-users] [Fwd: Re:
error in "--newer" tar's parameter]]:
> ooops, i think reply-to goes to the list. sorry.
my fault, I didn't reply to the list in the first place. Let's see who's
harvesting the list archives for e-mail addresses ;-).
> Hmmmmmm ... does my $fileList must have that plus sign at the end too?
For correctness: yes.
While $incrDate seems to be guaranteed to contain a character requiring
shell quoting (i.e. the space), $fileList may not, depending on your
BackupFilesOnly and BackupFilesExclude. That means you might be able to get
away with an incorrect setting of $fileList, while $incrDate will always
give you problems if you add the '+' and shouldn't or vice versa.
Of course, there's no reason to knowingly use '$fileList' if it should be
'$fileList+' ;-). It's just that if you were wondering why '$fileList' works
for full backups,
> # remove extra shell escapes ($fileList+ etc.) that are
> # needed for remote backups but may break local ones
> $Conf{TarFullArgs} = '$fileList';
> $Conf{TarIncrArgs} = '--newer=$incrDate $fileList';
that not necessarily means it is strictly correct.
> and now I must comment the two sencond lines to get the defaults or add
> the plus sign to the variables. I'm correct?
Yes.
After a bit of experimenting with 'sudo' I need to correct myself though.
Not 'sudo' is the source of your problem but your wrapper script. 'sudo'
preserves its argument boundaries (i.e. does not split or recombine
arguments).
> >> Running: /usr/bin/sudo /root/bin/tarCreate -v -f - -C /etc --totals
> >> --newer=2006-11-23 11:33:18 .
/root/bin/tarCreate probably does something along the lines of
exec /some/path/tar $some_extra_args $*
You can EITHER use '$incrDate+' and '$fileList+' (actually, your $fileList is
'.' as seen above, so as long as it stays that way, it won't make any
difference whether you use '$fileList' or '$fileList+') OR change your script
to use "$@" instead of $* (if it's that simple ... and, of course, if it's
really a bourne shell script) such as
exec /some/path/tar $some_extra_args "$@"
Note the quotes, and if you change the script, then don't use the '+' forms.
I hope that was not too confusing :).
Regards,
Holger
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