DIR:/xieerqi|16:01|skolodya@ubuntu:
$ file $(which update-grub)
/usr/sbin/update-grub: POSIX shell script, ASCII text executable
DIR:/xieerqi|16:01|skolodya@ubuntu:
$ cat $(which update-grub)
#!/bin/sh
set -e
exec grub-mkconfig -o /boot/grub/grub.cfg "$@"