On Thu, Nov 21, 2024 at 08:32:30AM +0000, Michael Kjörling wrote: > On 20 Nov 2024 17:49 -0500, from g...@wooledge.org (Greg Wooledge): > >> sudo echo "something" >>/etc/postfix/virtual_alias_maps > > > >> Can you help me why the first sudo failed? > > > > The redirection >> is being done before sudo is executed. > > Indeed. > > The usual pattern if you need to do this in a non-root-only script is > to do something like `echo | sudo tee` to tie the sudo to the thing > that needs write access to the output file.
My favourite is actually "sudo dd of=<file>" it hasn't the side effect of flooding your stdout (esp. with a larger, uglier thing). Cheers -- t
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