For some reason Arch and Antergos do not have this simple command that many other distros have. There may be a technical reason, I just don’t know what.
But here’s the contents of that simple script:
#!/bin/sh grub-mkconfig -o /boot/grub/grub.cfg
and you can put it to your system, e.g. with these commands:
su cd /usr/local/bin echo '#!/bin/sh' > update-grub echo 'grub-mkconfig -o /boot/grub/grub.cfg' >> update-grub chmod +x update-grub
If some day Antergos officially releases this command, then you need to remove this by:
sudo rm /usr/local/bin/update-grub
before installing the official command.