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
#Lassafeverinfo
Our latest Lassa Fever Situation Report has been published on our website (week 23).
This week's situation report and that of previous weeks can be downloaded via https://ncdc.gov.ng/diseases/sitreps/?cat=5&name=An%20update%20of%20Lassa%20fever%20outbreak%20in%20Nigeria
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Our latest Lassa Fever Situation Report has been published on our website (week 22).
This week's situation report and that of previous weeks can be downloaded via https://ncdc.gov.ng/diseases/sitreps/?cat=5&name=An%20update%20of%20Lassa%20fever%20outbreak%20in%20Nigeria
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Our latest Lassa Fever Situation Report has been published on our website (week 6).
In this reporting week, a total of 68 confirmed cases were recorded.
This week's situation report and that of previous weeks can be downloaded via https://ncdc.gov.ng/diseases/sitreps/?cat=5&name=An%20update%20of%20Lassa%20fever%20outbreak%20in%20Nigeria
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Our latest Lassa Fever Situation Report has been published on our website (week 4).
This week's situation report and that of previous weeks can be downloaded via https://ncdc.gov.ng/diseases/sitreps/?cat=5&name=An%20update%20of%20Lassa%20fever%20outbreak%20in%20Nigeria
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Our latest Lassa Fever Situation Report has been published on our website (week 2).
This week's situation report and that of previous weeks can be downloaded via https://ncdc.gov.ng/diseases/sitreps/?cat=5&name=An%20update%20of%20Lassa%20fever%20outbreak%20in%20Nigeria
#Lassafeverinfo
Our latest Lassa Fever Situation Report has been published on our website (week 49).
This week's situation report and that of previous weeks can be downloaded via https://ncdc.gov.ng/diseases/sitreps/?cat=5&name=An%20update%20of%20Lassa%20fever%20outbreak%20in%20Nigeria
In total for 2024, 1035 confirmed cases of #LassaFever have been recorded across 28 States in Nigeria.
🔗Download, read, and share our latest #LassaFever situation report via:
https://ncdc.gov.ng/diseases/sitreps/?cat=5&name=An%20update%20of%20Lassa%20fever%20outbreak%20in%20Nigeria
#LassaFeverInfo
In total for 2024, 1018 confirmed cases and 172 deaths of #LassaFever have been recorded across 28 States in Nigeria.
🔗Download, read, and share our latest #LassaFever situation report via:
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#LassaFeverInfo
In total for 2024, 1005 confirmed cases of #LassaFever have been recorded across 28 States in Nigeria.
🔗Download, read, and share our latest #LassaFever situation report via:
https://ncdc.gov.ng/diseases/sitreps/?cat=5&name=An%20update%20of%20Lassa%20fever%20outbreak%20in%20Nigeria
#LassaFeverInfo
In this week's #LassaFever situation report, we provide a summary of the epidemiological situation and response activities in Nigeria.
🔗Download, read, and share via
https://ncdc.gov.ng/diseases/sitreps/?cat=5&name=An%20update%20of%20Lassa%20fever%20outbreak%ll20in%20Nigeria
#LassaFeverInfo
In this week's #LassaFever situation report, we provide a summary of the epidemiological situation and response activities in Nigeria.
🔗Download, read, and share via
https://ncdc.gov.ng/diseases/sitreps/?cat=5&name=An%20update%20of%20Lassa%20fever%20outbreak%ll20in%20Nigeria
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You can not be too safe!
#Lassafever presents with symptoms similar to those of many illnesses like malaria.
Healthcare workers are urged to always have a high index of suspicion and practice standard infection prevention and control measures when attending to patients.
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