The "lkm" script used in chapter 4 for loading kernel modules uses dmesg which fails on

gregbuchholz · gregbuchholz · commit d60fb716a496 · 2021-08-28T11:31:46.000-07:00
permissions.  Changing to "sudo dmesg" fixes it.
diff --git a/lkm b/lkm
@@ -49,5 +49,5 @@ runcmd "make || exit 1"
 }
 
 runcmd "sudo insmod ./$1.ko && lsmod|grep $1"
-runcmd dmesg
+runcmd "sudo dmesg"
 exit 0

Original file line number	Diff line number	Diff line change
`@@ -49,5 +49,5 @@ runcmd "make \|\| exit 1"`
`49`	`49`	`}`
`50`	`50`
`51`	`51`	`runcmd "sudo insmod ./$1.ko && lsmod\|grep $1"`
`52`		`-runcmd dmesg`
	`52`	`+runcmd "sudo dmesg"`
`53`	`53`	`exit 0`