grub2 equalivent of bash $(cat /path/to/file)

Question

I use grub2 to boot a Linux system. This Linux system requires a very long kernel cmdline, stored in a file at the path of /cmdline. This system does not have a grub configuration file, so I have to use the grub shell to boot the system manually with the linux command, followed by the path to a kernel image and the cmdline, and then boot. So I have to run cat /cmdline, then retype the cmdline. This is very tedious, and it would be a lot easier to do something like linux /boot/vmlinuz-3.4 $(cat /cmdline). I have tried the following:

`cat /cmdline`
 $(cat /cmdline)
 $(</cmdline)

So what grub/grub2 equalivents are there to the comon $(cat /path/to/file)?

Ipor Sircer · Accepted Answer · 2016-09-07T21:42:15.123

0

There's no equivalent. Use configfile /mygrub.cfg.

edited Sep 07 '16 at 21:42

answered Sep 07 '16 at 21:12

Ipor Sircer

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grub2 equalivent of bash $(cat /path/to/file)

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