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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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Crypto M - Crypto News

@CryptoM · Post #64886 · 10.04.2026 г., 07:04

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🚀 BlackRock's Bitcoin Trust Sees Significant Inflows Amid Market Dynamics Investors directed $269.3 million into BlackRock’s iShares Bitcoin Trust on Thursday, marking its most successful day since early March, coinciding with the escalation of the US-Iran conflict. According to Cointelegraph, this influx helped reverse two days of net outflows among the 12 U.S. spot Bitcoin ETFs, culminating in a net inflow of $358.1 million. Bitcoin ETF inflows serve as a measure of both retail and institutional interest in Bitcoin. The Fidelity Wise Origin Bitcoin Fund (FBTC) followed with $53.3 million in inflows, while the newly launched Morgan Stanley Bitcoin Trust (MSBT) contributed $14.9 million on its second trading day, as reported by Farside Investors. Bitwise and ARK 21Shares' Bitcoin ETFs saw inflows of $11.7 million and $4.8 million, respectively, while Franklin Templeton and VanEck’s Bitcoin products recorded around $2 million. Since March 23, BlackRock’s IBIT has accumulated $1.5 billion in net inflows, despite a broader crypto market downturn that saw Bitcoin's price drop from a 2026 high of $97,000 to $72,100. Robert Mitchnick, BlackRock’s digital assets head, remarked in March that IBIT investors tend to be "disproportionately long-term buy and hold" investors, even amid significant selling pressure in the Bitcoin market. Meanwhile, Amy Oldenburg, Morgan Stanley’s digital asset head, highlighted in a Bloomberg interview that MSBT was the bank’s most successful ETF launch to date. She noted, "This is just the first of a long roadmap of new products on the asset management side." Morgan Stanley has also filed to list a staked Ether (ETH) ETF and Solana (SOL) ETF. With the recent inflows, U.S. spot Bitcoin ETFs are nearing a year-to-date net inflow. The Bitcoin ETFs concluded 2025 with $56.59 billion in net inflows and currently stand at $56.51 billion, just $80 million shy of returning to their initial inflow figures for the year. #BlackRock#BitcoinTrust#BitcoinETF#MarketInflows#Fidelity#MorganStanley#Cryptocurrency#Bitcoin#ETFs#Investment#DigitalAssets#USIranConflict#CryptoMarket#BTC#ETH#SOL

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