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Изворен канал @pythonotes · Post #411 · 9 фев.

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reload_flag="" if [[ -n "${DEBUG}" ]]; then reload_flag="--reload" fi if [[ -n "${WORKER_COUNT}" ]]; then workers=${WORKER_COUNT} else workers=2 fi gunicorn --workers ${workers} \ --bind 0.0.0.0:8000 \ ${reload_flag} main.wsgi Писали такие конструкции чтобы проверить наличие флага и сформировать команду правильно? На самом деле можно сделать тоже самое проще. Для этого используются операторы условной подстановки, доступные в оболочках семейства POSIX. :- для установки значений по умолчанию ${WORKER_COUNT:-2} Если переменная не объявлена, то будет дефолтное значение 2. :+ подставляет указанный текст, если переменная не пуста ${DEBUG:+--reload} Если что-то есть в переменной то распечатается текст после символа +, в противном случае - ничего. Удобно для опциональных флагов, как в нашем примере. Итого наш скрипт может выглядеть так: gunicorn --workers ${WORKER_COUNT:-2} \ --bind 0.0.0.0:8000 \ ${DEBUG:+--reload} main.wsgi Есть еще два оператора. := не только подставить дефолтное значение, но и присвоить его переменной, если она пуста # никаких переменных еще нет VAL1=${VAL2:=hello} # теперь доступны обе echo $VAL1 $VAL2 # hello hello :? остановить выполнение с ошибкой, если переменной нет. echo ${MISS:?is required} bash: MISS: is required Код выхода будет 1. #tricks#linux

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Reuters: World

@reutersworldchannel · Post #149273 · 12.10.2021 г., 20:28

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Red-hot lava forces evacuations in Spain's La Palma Over 700 residents on the Spanish island of La Palma were ordered to abandon their homes as lava advanced toward their neighborhoods. #LaPalma#Spain#volcano#CanaryIslands#CumbreVieja#News#Reuters Subscribe: http://smarturl.it/reuterssubscribe Reuters brings you the latest business, finance and breaking news video from around the globe. Our reputation for accuracy and impartiality is unparalleled. Get the latest news on: http://reuters.com/ Follow Reuters on Facebook: https://www.facebook.com/Reuters Follow Reuters on Twitter: https://twitter.com/Reuters Follow Reuters on Instagram: https://www.instagram.com/reuters/?hl=en ➖@reutersworldchannel➖

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#lapalma#spain#volcano#canaryislands#cumbrevieja#news#reuters
Reuters: World

@reutersworldchannel · Post #149213 · 11.10.2021 г., 14:34

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Lava spews from La Palma volcano The Cumbre Vieja volcano on Spain's La Palma island continues to spew lava and smoke. #Volcano#LaPalma#Spain#Lava#CanaryIslands#CumbreVieja#News#Reuters Subscribe: http://smarturl.it/reuterssubscribe Reuters brings you the latest business, finance and breaking news video from around the globe. Our reputation for accuracy and impartiality is unparalleled. Get the latest news on: http://reuters.com/ Follow Reuters on Facebook: https://www.facebook.com/Reuters Follow Reuters on Twitter: https://twitter.com/Reuters Follow Reuters on Instagram: https://www.instagram.com/reuters/?hl=en ➖@reutersworldchannel➖

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#volcano#lapalma#spain#lava#canaryislands#cumbrevieja#news#reuters
Reuters: World

@reutersworldchannel · Post #149428 · 15.10.2021 г., 19:42

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LIVE: Night view of La Palma's erupting volcano The night view of the Cumbre Vieja volcano on Spain's La Palma island as it continues to spew lava since it first erupted on September 19. #News#Reuters#Live#volcano#LaPalma#Spain#CumbreVieja#lava#science#environment Subscribe: http://smarturl.it/reuterssubscribe Reuters brings you the latest business, finance and breaking news video from around the globe. Our reputation for accuracy and impartiality is unparalleled. Get the latest news on: http://reuters.com/ Follow Reuters on Facebook: https://www.facebook.com/Reuters Follow Reuters on Twitter: https://twitter.com/Reuters Follow Reuters on Instagram: https://www.instagram.com/reuters/?hl=en ➖@reutersworldchannel➖

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Reuters: World

@reutersworldchannel · Post #149155 · 09.10.2021 г., 11:51

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Volunteers take in La Palma's homeless pets This makeshift shelter in La Palma, Spain, is housing hundreds of homeless pets after their owners were forced to flee from the Cumbre Vieja volcano. #Volcano#LaPalma#Spain#Lava#CanaryIslands#CumbreVieja#HomelessPets#Pets#News#Reuters Subscribe: http://smarturl.it/reuterssubscribe Reuters brings you the latest business, finance and breaking news video from around the globe. Our reputation for accuracy and impartiality is unparalleled. Get the latest news on: http://reuters.com/ Follow Reuters on Facebook: https://www.facebook.com/Reuters Follow Reuters on Twitter: https://twitter.com/Reuters Follow Reuters on Instagram: https://www.instagram.com/reuters/?hl=en ➖@reutersworldchannel➖

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#volcano#lapalma#spain#lava#canaryislands#cumbrevieja#homelesspets#pets#news#reuters