[Techtalk] Grub2 entry for booting into shell

[James Sutherland]

On 14/02/2016 05:04, Gwen Morse wrote:
> On Fri, Feb 12, 2016 at 5:21 AM, A. Mani <a.mani.cms at gmail.com> wrote:
>
>> On Wed, Feb 10, 2016 at 5:19 PM, Gwen Morse <gwen.morse at gmail.com> wrote:
>>> I'd like to create a GRUB2 menu option to allow me to boot into the shell
>>> from the GRUB menu.
>>
>>
>> You need to edit files in /etc/grub.d and generate the required
>> configuration.
>>
>> RTFM
>
> This is the linuxchix techtalk list, isn't it? Did the list change, has it
> stopped being a cooperative environment for women to ask Linux questions
> without being brushed off with a "RTFM" response?
>
> Should I ask on the newchix list instead?
>
> PS - I have edited my files in /etc/grub.d and I am trying to generate the
> required configuration but I'm failing. That's why I'm asking for
> assistance.

RTFM is indeed an unhelpful answer there! Presumably, if it were 
actually explained in the FM, there'd be no need to ask here...

The root problem is that the script you have at the moment just copies 
itself minus the first few lines - leaving any variables as-is. I 
*think* the answer is to replace that logic with a "heredoc", which will 
interpret the variables as you want:

cat <<EOF
(text from the previous script goes here, including any $var bits)
EOF

You should be able to run the grub.d script itself on the command line, 
by the way, and see exactly what it prints out. That might save a bit of 
time re-building the config to get it the way you need.


James.