[sf-lug] sudo

Alex Kleider akleider at sonic.net
Wed Nov 8 18:30:28 PST 2017

I am working with a headless Raspberry Pi and would like to be able
to add a line to a file owned by root but would like to do this from
within a bash script that itself is not run with root privileges.[1]

Here is what I have come up with so far:

# File: t.sh

export ap_ip=

sudo sh -c 'echo "$ap_ip  library library.lan rachel rachel.lan" >> 

This seems to work except for the fact that the variable ap_ip
does not get inserted, only the other part of the line.
I think it's because the quoting has not allowed the variable to
be passed.

Can anyone advise how this should be done?
Thanks in advance.

[1] It so happens that the Raspberry Pi does not ask for a password
when an sudo command is issued (not sure how that is- not seen it
on any other Linux system.)

Alex Kleider
(sent from my current gizmo)

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