Does the script source your env? On Wed, Jul 23, 2025 at 10:47 AM Michael Barnes <barnmich...@gmail.com> wrote:
> On Fri, Jul 18, 2025, 09:56 Michael Barnes <barnmich...@gmail.com> wrote: > > > > > > > On Wed, Jul 16, 2025 at 11:59 PM Ben Koenig <techkoe...@protonmail.com> > > wrote: > > > >> > >> > >> > >> > >> -Ben > >> > >> > >> On Wednesday, July 16th, 2025 at 11:05 PM, Ben Koenig < > >> techkoe...@protonmail.com> wrote: > >> > >> > On Wednesday, July 16th, 2025 at 9:57 PM, Michael Barnes > >> barnmich...@gmail.com wrote: > >> > > >> > > I have a script that is supposed to grab a weather feed and return > the > >> > > current temperature. If grabs the file fine, but does not return the > >> > > temperature. > >> > > > >> > > Here is the line that fails: > >> > > > >> > > T=$(grep "<temp_f>" KEUG.xml |cut -c10- |cut -d '.' -f 1) > >> > > > >> > > Here is the KEUG.xml file: > >> > > <?xml version="1.0" encoding="ISO-8859-1"?> > >> > > > >> > > <?xml-stylesheet href="latest_ob.xsl" type="text/xsl"?> > >> > > > >> > > <current_observation version="1.0" xmlns:xsd=" > >> > > http://www.w3.org/2001/XMLSchema"; xmlns:xsi=" > >> > > http://www.w3.org/2001/XMLSchema-instance"; > >> xsi:noNamespaceSchemaLocation=" > >> > > http://www.weather.gov/view/current_observation.xsd";><credit>NOAA's > >> > > > >> > > National Weather Service</credit><credit_URL>https://weather.gov/ > >> > > > >> > > </credit_URL><image><url> > >> http://forecast.weather.gov/images/xml_badge.png</url><title>NOAA's > >> > > > >> > > National Weather > >> > > Service</title><link>https://www.weather.gov > >> </link></image><suggested_pickup>15 > >> > > > >> > > minutes after the > >> > > > >> > hour</suggested_pickup><suggested_pickup_period>60</suggested_pickup_period><location>Eugene, > >> > > > >> > > Mahlon Sweet Field, > >> > > > >> > OR</location><station_id>KEUG</station_id><latitude>44.13333</latitude><longitude>-123.21444</longitude><observation_time>Last > >> > > > >> > > Update on Jul 16 2025, 7:54 pm > >> > > PDT</observation_time><observation_time_rfc822>Wed, 16 Jul 2025 > >> 19:54:00 > >> > > > >> > > > >> > -0700</observation_time_rfc822><weather>Fair</weather><temperature_string>88.0 > >> > > > >> > > F (31.1 > >> > > > >> > C)</temperature_string><temp_f>88.0</temp_f><temp_c>31.1</temp_c><relative_humidity>26</relative_humidity><wind_string>West > >> > > > >> > > at 8.1 MPH (7 > >> > > > >> > KT)</wind_string><wind_dir>West</wind_dir><wind_degrees>250</wind_degrees><wind_mph>8.1</wind_mph><wind_kt>7</wind_kt><pressure_string>1008 > >> > > > >> > > > >> > mb</pressure_string><pressure_mb>1008</pressure_mb><pressure_in>29.78</pressure_in><dewpoint_string>48.9 > >> > > > >> > > F (9.4 > >> > > > >> > C)</dewpoint_string><dewpoint_f>48.9</dewpoint_f><dewpoint_c>9.4</dewpoint_c><heat_index_string>85 > >> > > > >> > > F (30 > >> > > > >> > C)</heat_index_string><heat_index_f>85</heat_index_f><heat_index_c>30</heat_index_c><visibility_mi>10.00</visibility_mi><icon_url_base> > >> > > > >> > > http://forecast.weather.gov/images/wtf/small/ > >> > > </icon_url_base><two_day_history_url> > >> > > > >> > > http://forecast.weather.gov/data/obhistory/KEUG.html > >> > > > </two_day_history_url><icon_url_name>nskc.png</icon_url_name><ob_url> > >> > > > >> > > http://forecast.weather.gov/data/METAR/KEUG.1.txt > >> </ob_url><disclaimer_url> > >> > > > >> > > https://www.weather.gov/disclaimer.html > >> </disclaimer_url><copyright_url> > >> > > > >> > > https://www.weather.gov/disclaimer.html > >> </copyright_url><privacy_policy_url> > >> > > > >> > > https://www.weather.gov/notice.html > >> > > </privacy_policy_url></current_observation> > >> > > > >> > > I should get: > >> > > > >> > > $ echo $T > >> > > 88 > >> > > > >> > > Instead, I get: > >> > > $ echo $T > >> > > observation version="1 > >> > > > >> > > This has been working for several years. The script runs each hour, > >> pulling > >> > > the weather statement and culling the current temperature. The > >> remainder of > >> > > the script uses the variable to select the appropriate audio file to > >> > > announce the current temperature. I set this up about five years ago > >> and my > >> > > feeble memory has no idea how it really works any more. > >> > > > >> > > Any ideas on what went wrong where? > >> > > > >> > > Thanks, > >> > > Michael > >> > > >> > > >> > > >> > I think the linebreaks are missing in your datafile. you are using > grep > >> to search for a specific line and then cut from there, but if newlines > are > >> removed from the xml then it does what you described. > >> > > >> > XML does not require newlines in order to be valid and it's possible > >> that the source of your data no longer prints the data with them. > >> > > >> > You will either need to make sure the downloaded xml includes all the > >> expected new lines or adjust the script to make sure it doesn't matter. > >> > > >> > -Ben > >> > >> This might be a more robust one-liner to get the information you need: > >> > >> T=$(awk -F'temp_f>|</temp_f' '{print $2}' KEUG.xml | cut -d. -f1) > >> > > > > > > This seems to do the trick. Thank you so much. > > > > Michael > > > > > > Well, this is strange. I finally got to lay hands on the actual machine > running this. (CENTOS7) Running the script from the command line does not > set the variable, however, running just that line by itself works fine. > Running it on my Mint machine at home works as desired. > I don't understand why the script would not set the variable, but does work > with just that line. > ??? > > Michael >
