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.
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Some of us prefer to have some fun while also learning new things about our favorite subjects😎
#videogame#privacy#fun#security
So, in this post, we recommend three video games that are fun, but also help you learn a lot about data privacy, cybersecurity, and related topics💻
🔢Hacknet: A famous hacker known as "Bit" has died, and you must investigate his death. Released in 2015, this game teaches you about real-world hacking techniques and cybersecurity principles. You learn to navigate networks, analyze data, and see the importance of data privacy.
🔢Orwell: It's a narrative-driven game in which you are a government operative who monitors citizens' data to prevent crime. The game raises questions about privacy, surveillance, and the ethical implications of data collection.
🔢Cybersecurity Lab: This game is designed for students, and it puts them in engaging scenarios and challenges to teach them about cybersecurity concepts, including data privacy.
Hope you have a lot of fun playing these. Best wishes🌹
🆔Privacy
Alla ricerca di un qui ed un ora dalla forma conveniente per quanto ridotta all'osso.
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