Added new option to get numeric value of sensor only

[rmtsrc]

Returns only the numeric value of the sensor.
Known types: temperature, humidity, "dew point"

[c72578]

due-point->dew-point, dew point,

[c72578]

Here is a suggestion for updating the PR:

diff --git a/utils/tempered.c b/utils/tempered.c
index 023ca5f..d9b3ab1 100644
--- a/utils/tempered.c
+++ b/utils/tempered.c
@@ -31,9 +31,9 @@ void show_help()
 "Known options:\n"
 "    -h\n"
 "    --help                 Show this help text\n"
-"    -t\n"
-"    --type                 Returns only the numeric value of the sensor.\n"
-"                           Known sensors: temperature, humidity, dew point\n"
+"    -t <type>\n"
+"    --type <type>          Returns only the numeric value of the sensor.\n"
+"                           Known types: temperature, humidity, \"dew point\"\n"
 "    -e\n"
 "    --enumerate            Enumerate the found devices without reading them.\n"
 "    -s <scale>\n"

[c72578]

Thanks for updating the PR.
This PR looks pretty useful, to get only the numeric value, which saves parsing or splitting the default, verbose output of tempered.

[c72578]

I guess it is intended, that the value is printed without a newline after it.