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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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@dailychannels · Post #6727 · 05.03.2026 г., 13:00

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🗺 Travel the World | Private Expeditions

@expeditionsworldwide · Post #11 · 08.08.2020 г., 05:16

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Today I am adding a Stratis coin (#STRAT) to my portfolio, paired with #USDT on Binance. The coin looks attractive for a long-term investment. Purchasing it in my 10$ Experiment portfolio. The coin ranks 124th in the CoinMarketCap rating. Briefly about the project: #STRAT is a blockchain-based platform that makes it easy to develop, test and deploy C# applications on the dotNET framework. STRATIS will act as a blockchain-as-a-service (BAAS) platform for corporations and institutions. This will help the enterprises that have joined the project to quickly implement blockchain technology for use in various industries. 🎯 The mission of the STRATIS platform is to become a one-stop shop for all blockchain-based products. The technology is a clone of the core bitcoin code, with several advanced features and written in C# instead of C++. #STRAT increased in value from August 2016 ($ 0.023) to the summer of 2017 (about $ 7.71), which is 49,000% in 10 months. It became one of the few currencies to be adopted and implemented very quickly thanks to numerous trusted exchanges and cryptocurrency wallets such as Poloniex, Jaxx and Ledger. At the moment, the price is moving in a neat upward channel. We have already retested the mirror support level 0.5440 twice. We have 2 support zones around 0.50 and 0.40. According to the Fibonacci grid, growth is expected by 70% to the level of 0.9588, which is near the psychological $1. This is the 6th coin in my portfolio. Before that, I bought for $10 such coins as: #NEO, #EOS, #REP, #XRP and of course #BTC.

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Libertà è ragione

@libertaeragione · Post #3964 · 25.09.2023 г., 10:01

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