Notify system startup errors

.config/awesome/rc.lua

@@ -31,6 +31,11 @@ if ostype == "Linux" then
 	vicious = require("vicious")
 end
 
+-- Custom variables.
+local termcmd = os.getenv("TERMCMD") or "urxvt"
+local term = termcmd .. " -e "
+local home = os.getenv("HOME")
+
 --------------------------------------------------------------------------------
 -- Error handling
 --------------------------------------------------------------------------------
@@ -58,6 +63,19 @@ do
 	end)
 end
 
+-- Notify system startup errors.
+do
+	for _, file in pairs({home .. "/errors-dmesg.log", home .. "/errors-systemd.log"}) do
+		local f = io.open (file,'r')
+		if f ~= nil then
+			f:close ()
+			naughty.notify({ preset = naughty.config.presets.critical,
+					title = "System startup error!",
+					text = "See " .. file })
+		end
+	end
+end
+
 --------------------------------------------------------------------------------
 -- Themes define colours, icons, and wallpapers
 --------------------------------------------------------------------------------
@@ -231,9 +249,6 @@ move_mouse_away()
 -- Note that some laptop will not work when pressing Super+Fn.
 -- Therefore we only use Fn and Mod1+Fn.
 --------------------------------------------------------------------------------
-termcmd = os.getenv("TERMCMD") or "urxvt"
-term = termcmd .. " -e "
-home = os.getenv("HOME")
 
 globalkeys = awful.util.table.join(
 	-- Terminal

.profile

@@ -123,6 +123,20 @@ if [ -d "$HOME/.go" ]; then
 	appendpath "$GOPATH/bin"
 fi
 
+## Startup error log.
+## dmesg
+log_dmesg="$(dmesg | grep -i error)"
+[ -n "$log_dmesg" ] && echo "$log_dmesg" > "$HOME/errors-dmesg.log" || rm -f "$HOME/errors-dmesg.log"
+## systemd
+if command -v systemctl >/dev/null 2>&1; then
+	count="$(systemctl -l --failed | awk '{print $1;exit}')"
+	if [ $count -ne 0 ]; then
+		systemctl -l --failed > "$HOME/errors-systemd.log"
+	else
+		rm -f "$HOME/errors-systemd.log"
+	fi
+fi
+
 ## Hook. Should be sourced last
 [ -f ~/.profile_hook ] && . ~/.profile_hook
 ################################################################################