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

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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Пребарај: #measles

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Our #Measles situation report for weeks 45, 2024 has been published. The weekly report provides a summary of the #Measles epidemiological situation as at November 2024 and response activities in Nigeria. 🔗 Download, read, and share via: https://ncdc.gov.ng/ncdc.gov.ng/themes/common/files/sitreps/ac1f0718b5d4964c70a2de687309f94d.pdf

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#Measles is highly infectious. Early symptoms are high-grade fever, cough, runny nose, red eyes & tiny white spots in the mouth. Please report immediately to a health facility when these symptoms are observed. Read more via: https://ncdc.gov.ng/diseases/info/M

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REDNESS OF THE EYE is an early indication of #Measles when observed with symptoms like high-grade fever, running nose, dry cough & tiny spots in the mouth. Please report immediately to a health facility when these symptoms are observed. Visit https://ncdc.gov.ng/diseases/info/M for more information.

Hashtags

#Measles is highly infectious. Early symptoms are high-grade fever, cough, runny nose, red eyes & tiny white spots in the mouth. Please report immediately to a health facility when these symptoms are observed. Read more via: https://ncdc.gov.ng/diseases/info/M

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Runny nose, red eyes, cough, high fever and tiny white spots in the mouth are early symptoms of #measles infection. Seek immediate medical attention if you experience these symptoms or notice them in your loved ones. Visit https://ncdc.gov.ng/diseases/info/M to read more

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RUNNING NOSE is an early indication of #Measles when observed with symptoms like high fever, red eyes, dry cough & tiny spots in the mouth. Please report immediately to a health facility when these symptoms are observed. Visit https://ncdc.gov.ng/diseases/info/M for more.

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REDNESS OF THE EYE is an early indication of #Measles when observed with symptoms like high-grade fever, running nose, dry cough & tiny spots in the mouth. Please report immediately to a health facility when these symptoms are observed. Visit https://ncdc.gov.ng/diseases/info/M for more.

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#Measles is an acute, highly infectious disease with initial symptoms of high fever, cough, runny nose, red eyes & tiny white spots in the mouth. Please immediately report to a health facility if you experience these symptoms. Read more: https://ncdc.gov.ng/diseases/info/M

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