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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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Venture Village Wall 🦄

@venturevillagewall · Post #3672 · 21.12.2024 г., 18:50

Sheldon Schiff Proposes USAcoin Peter Schiff advocates replacing Bitcoin as a strategic US reserve with a new crypto asset, USAcoin, featuring a limited supply of 21 million coins and an improved blockchain for better payment capability. He highlights this shift as a pathway to wealth, contrasting his views on Bitcoin, which he refers to as digital gold. Schiff also generated an image with Elon Musk and Donald Trump against a Bitcoin backdrop, criticizing ChatGPT for its content restrictions. _"HODL to the Moon, America!"_ #PeterSchiff#USAcoin#Crypto#Bitcoin#Blockchain#Investment#DigitalGold#Wealth#PaymentSystems#Grok

Crypto M - Crypto News

@CryptoM · Post #65365 · 13.04.2026 г., 02:44

🚀 Hong Kong's Cautious Approach to Digital Asset Licensing Hong Kong's Financial Secretary, Paul Chan, has outlined a cautious strategy for issuing digital asset licenses. According to Foresight News, Chan emphasized a 'small steps, quick progress' approach, initially granting a limited number of licenses. The focus is on practical application scenarios, with plans to evaluate experiences before issuing a second batch. Chan highlighted that stablecoins and digital assets represent financial innovation, requiring encouragement for breakthroughs. However, he stressed the importance of maintaining security and implementing mechanisms to prevent money laundering, necessitating appropriate regulation. While stablecoins offer benefits such as decentralization and high efficiency, Chan noted they should be viewed as payment tools rather than investment instruments. #HongKong#DigitalAssets#FinTech#Stablecoins#FinancialRegulation#CryptoLicensing#Innovation#AML#PaymentSystems

Venture Village Wall 🦄

@venturevillagewall · Post #4295 · 03.03.2025 г., 13:00

Trump Announces National Crypto Reserve 🇺🇸 President Trump announces plans for a U.S. national crypto reserve, including assets like XRP, SOL, and ADA. He established a presidential working group to strategize this reserve. The announcement has sparked controversy, with accusations of insider trading and mixed opinions on asset choice. Bitcoin and Ethereum will also play significant roles in the reserve. Read more details here. #Crypto#XRP#Bitcoin#Ethereum#SOL#ADA#US#Reserve#InsiderTrading#Blockchain#Trump#Finance#Investments#VC#Regulation#DigitalAssets#Stablecoins#PaymentSystems

Venture Village Wall 🦄

@venturevillagewall · Post #3669 · 21.12.2024 г., 13:51

USAcoin Proposal by Peter Schiff Peter Schiff suggests that instead of building a strategic reserve in BTC, the U.S. could save money by launching a new cryptocurrency called USAcoin, which would have a capped supply of 21 million coins, utilizing updated blockchain technology for payment efficiency. He emphasizes the potential wealth this could generate and encourages HODL. 🔗Read more here🔗Join Crypto Twitter #USAcoin#Cryptocurrency#BTC#Blockchain#PaymentSystems#Investment#WealthBuilding#HODL#Crypto#Finance#PeterSchiff#CryptoTwitter#DigitalCurrency