TGINSIGHT SIMILAR POSTS
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
Пребарај: #antimicrobialresistance
@ncdcgov · Post #4295 · 05.06.2024 г., 08:36
Do not save your drugs for later or share them with another person. Ensure you complete your dosage as prescribed by a certified healthcare worker. Play your part to prevent #AntimicrobialResistance.
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@ncdcgov · Post #3946 · 09.08.2023 г., 12:09
Dear Healthcare Workers, Remember that many infections present with similar signs and symptoms. Always maintain a high index of suspicion. To prevent #AntimicrobialResistance, conduct a test before you treat a patient.
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@ncdcgov · Post #3881 · 04.07.2023 г., 08:50
Dear Healthcare Workers, Remember that many infections present with similar signs and symptoms. Always maintain a high index of suspicion. To prevent #AntimicrobialResistance, conduct a test before you treat a patient.
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@ncdcgov · Post #3845 · 22.05.2023 г., 11:53
#AntimicrobialResistance is a global health issue leading to the ineffectiveness of drugs against the illness they were developed to treat. Health care practitioners should always conduct a test before prescribing treatment for a patient
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@ncdcgov · Post #3812 · 19.04.2023 г., 08:56
Do not save your drugs for later or share them with another person. Ensure you complete your dosage as prescribed by a healthcare worker. Play your part to prevent #AntimicrobialResistance.
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@ncdcgov · Post #3795 · 04.04.2023 г., 16:11
Do not save your drugs for later or share them with another individual Complete your dosage as prescribed by a healthcare worker. Play your part to prevent #AntimicrobialResistance.
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@ncdcgov · Post #4339 · 31.07.2024 г., 09:29
#Antimicrobials are not always needed when you are feeling unwell. Antibiotics should only be prescribed by healthcare professionals after an appropriate diagnostic test. Be an #AntimicrobialResistance guardian.
@ncdcgov · Post #4273 · 10.05.2024 г., 10:58
#Antimicrobials are not always needed when you are feeling unwell. Antibiotics should only be prescribed by healthcare professionals after an appropriate diagnostic test. Be an #AntimicrobialResistance guardian
@ncdcgov · Post #4071 · 14.11.2023 г., 08:25
#Antimicrobials are not always needed when you are feeling unwell. Antibiotics should only be prescribed by healthcare professionals after an appropriate diagnostic test. Be an #AntimicrobialResistance guardian
@ncdcgov · Post #3884 · 05.07.2023 г., 14:30
#Antimicrobials are not always needed when you are feeling unwell. Antibiotics should only be prescribed by healthcare professionals after an appropriate diagnostic test. Be an #AntimicrobialResistance guardian
@ncdcgov · Post #4357 · 19.08.2024 г., 12:44
The misuse and overuse of #antibiotics💊 & other antimicrobials reduces their effectiveness in treating common infections in animals & humans. Everyone has a role to play to help fight #AntimicrobialResistance, do your part!
@ncdcgov · Post #3856 · 02.06.2023 г., 09:20
Misuse or overuse of #antibiotics💊 & other antimicrobials can reduce their effectiveness in treating common infections in animals & humans. Everyone has a role to play to help fight #AntimicrobialResistance, do your part!