dwm statusbar

statusbar.lua

local function exec (cmd, ...)
    local argstr = (table.maxn(arg) == 0 and '') or
        string.format(' %q', table.concat(arg))

    return os.execute(cmd .. argstr)
end

local function read (cmd)
    local prog = io.popen(cmd)
    local pout = prog:read('*a')
    prog:close()
    return pout
end

repeat
    local wlan = read('ifconfig wlan0')
    wlan = table.concat({
        string.match(wlan, 'ssid (%a+)') or 'no ssid',
        string.match(wlan, 'status: ([^%c]+)') or 'no carrier'
    }, ': ')

    local date = table.concat({
        string.match(
            os.date(),
            '(%a+) (%a+ %d+) (%d+:%d+):%d+ (%d+)'
        )
    }, ' ')

    exec(
        'xsetroot -name',
        table.concat({ wlan, date }, ' | ')
    )
until 0 < exec('sleep', 10)