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
💻 We just wrapped up an incredible event, “How to Become an MLSA” and it was a huge success! A big thank you to everyone who joined us. 🚀
Our MLSA, Dilafruz Joraboyeva, shared her inspiring journey and valuable insights on becoming a successful Microsoft Ambassador. We were also honored to have Mukhammadkarim Tukhtaboyev, lead of the Microsoft Developers Community Uzbekistan, share important information about our vibrant community and opportunities for growth.⚡
Check out the highlights in our amazing video recap! Together, we’re building a stronger tech community. Stay tuned for more events! 🙃
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💻 Join Us for "Way to Become an MLSA"!
Are you interested in becoming a Microsoft Learn Student Ambassador? Curious about how to kickstart your journey in tech?
Join us for an inspiring event featuring Uzbekistan’s youngest and first female Microsoft Student Ambassador. She will share her unique experiences and insights into the MLSA program.⚡
📍Date & Time: November 2, 2:00 pm
⏰Location: C-Space, Yunusabad Branch
This is your opportunity to ask questions, network with peers, and learn how you can become a part of this exciting community. Don’t miss out—mark your calendars!🙃
Register here! Spots are limited.
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Our Core Team Member, Dilafruz Joraboyeva, Achieved Microsoft Learn Student Ambassador Status!
We are thrilled to share that our very own core team member, Dilafruz Joraboyeva, has achieved a remarkable milestone by becoming the first and youngest female Microsoft Learn Student Ambassador (MLSA) in Uzbekistan. Dilafruz, who has long been an active and dedicated part of our community, now stands as the only MLSA in the country.
In her new role, Dilafruz will be leading the MLSA program across universities in Uzbekistan, bringing Microsoft technologies and opportunities closer to students. Her efforts will help build a vibrant community of learners and innovators, inspiring others to take on leadership roles in tech.
Keep an eye on our official platforms for upcoming events related to the MLSA program, where you can discover how to join this exciting initiative and make an impact at your university.
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