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I have set-up Deja Dup to take backup over a ssh connection on the LAN. At times when the link is down, Deja Dup pops out a box 'No route to host'.

Is there a way to avoid this? Like a -quiet switch?? Or at least redirect the output to some log-file?

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No, there is no way to tell deja-dup to not display errors. But modern versions of deja-dup (Ubuntu 12.04 or above) should not start a scheduled backup if it can't resolve the hostname.

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You can redirect standard output this way:

<command> > <file>

To redirect standard error, use this:

<command> 2> <file>

To redirect both, use this:

<command> > <file> 2> <file>

If you don't want to actually save the file, you can redirect to /dev/null. Anything written there will simply disappear.

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This is too general. My question was specifically was about Deja Dup -- the backup utility with a GUI. – deshmukh Oct 5 '12 at 7:20
So how about replacing <command> with deja-dup? – Kalle Elmér Oct 5 '12 at 9:49
Then I will need to launch my command and not Deja Dup. Plus, I do not know if the No route is the error of Deja Dup. – deshmukh Oct 9 '12 at 8:51
I don't get it. If you type deja-dup > /dev/null, doesn't that start Deja Dup? – Kalle Elmér Oct 10 '12 at 12:29
It might. But that is not how it operates. Deja Dup is kind of always on. It backs up at a particular schedule set up in the application itself – deshmukh Oct 11 '12 at 6:37

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