For 'Linux' Force ownership and modes on file using sudo.

Avoid assuming certain things.
	Forcing creation of target dir with correct mode and ownership.
	Move files into place setting their modes too.
	These tasks done the same for binary and manpages.

docs/content/install.sh

@@ -156,24 +156,29 @@ case "$OS" in
   'linux')
     # - - - - - - - - - - - - - - - - - - - -
     #binary
+	# First verify our sudo ability. If we pass that then execute the steps
+	# requested but make sure we're doing it as root and not as any other user.
+	# (If sudo was run before this, the user may be set to something *other*
+	# than 'root', this makes sure.
     sudo -v
-    sudo -s <<-EOT
-        cp rclone ${binTgtDir}/rclone.new
-        chmod 755 ${binTgtDir}/rclone.new
-        chown root:root ${binTgtDir}/rclone.new
-        mv ${binTgtDir}/rclone.new ${binTgtDir}/rclone
-    EOT
+    sudo -u root -- bash -c "\
+		mkdir -m 0755 ${binTgtDir} && \
+        cp rclone ${binTgtDir}/rclone.new && \
+        chmod 0755 ${binTgtDir}/rclone.new && \
+        chown root:root ${binTgtDir}/rclone.new && \
+        mv ${binTgtDir}/rclone.new ${binTgtDir}/rclone"
     # - - - - - - - - - - - - - - - - - - - -
     #manual
     if ! [ -x "$(command -v mandb)" ]; then
         echo 'mandb not found. The rclone man docs will not be installed.'
     else
-    sudo -v
-    sudo -s <<-EOT
-        mkdir -p ${man1TgtDir}/man1
-        cp rclone.1 ${man1TgtDir}/man1/
-        mandb
-    EOT
+		# See sudo note above.
+		sudo -v
+		sudo -u root -- bash -c "\
+			mkdir -m 0755 -p ${man1TgtDir} && \
+			cp rclone.1 ${man1TgtDir} && \
+			chmod 0644 ${man1TgtDir}/rclone.1" && \
+			mandb --quiet --filename=${man1TgtDir}/rclone.1"
     # - - - - - - - - - - - - - - - - - - - -
     fi
     ;;