install_easy: do not use privileged /proc/1/exe

install_easy.sh

@@ -206,7 +206,8 @@ check_system()
 
 	local UNAME=$(uname)
 	if [ "$UNAME" = "Linux" ]; then
-		local INIT="$(basename $(readlink /proc/1/exe))"
+		# do not use 'exe' because it requires root
+		local INIT="$(basename $(sed 's/\x0/\n/g' /proc/1/cmdline  | head -n 1))"
 		# some distros include systemctl without systemd
 		if [ -d "$SYSTEMD_DIR" ] && [ -x "$SYSTEMCTL" ] && [ "$INIT" = "systemd" ]; then
 			SYSTEM=systemd

uninstall_easy.sh

@@ -53,7 +53,8 @@ check_system()
 
 	local UNAME=$(uname)
 	if [ "$UNAME" = "Linux" ]; then
-		local INIT="$(basename $(readlink /proc/1/exe))"
+		# do not use 'exe' because it requires root
+		local INIT="$(basename $(sed 's/\x0/\n/g' /proc/1/cmdline  | head -n 1))"
 		# some distros include systemctl without systemd
 		if [ -d "$SYSTEMD_DIR" ] && [ -x "$SYSTEMCTL" ] && [ "$INIT" = "systemd" ]; then
 			SYSTEM=systemd