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
🔻 RT @60PlusAssoc: 60 Plus President @sanuzis said, “On behalf of more than five million senior citizen supporters we applaud Sen @tedcruz for introducing S. 275, the Retirement Freedom Act that will allow individuals to choose to opt out of the #Medicare part A benefit." https://t.co/YU2i7whWK8
June 24, 2021 at 07:52PM
via Twitter
@SenTedCruz
Donald Trump bragged that the U.S. is spending so much money on his war in Iran it has no funds to pay for daycare or healthcare. 💰⚔️
The 79-year-old president made the boast during a typically rambling speech while hosting an Easter lunch at the White House on Wednesday. 🦅🍽
“The United States can’t take care of daycare. That has to be up to a state,” Trump said. “We’re a big country. We have 50 states. We have all these other people, we’re fighting wars. We can’t take care of daycare. You’ve got to let a state take care of daycare, and they should pay for it too.” 🏛💼
“Medicaid, Medicare, all these individual things. They can do it on a state basis. You can’t do it on a federal [level]. We have to take care of one thing: military protection—we have to guard the country. But all these little things, all these little scams that have taken place, you have to let states take care of them.” 🎖🛡
#Trump#Medicare
👂More on Trump's Ear
⚠️
Summed AI Secures $500K Funding
Summed AI has raised $500K in funding to enhance its AI-driven platform that streamlines Medicare sales calls. The innovative technology allows users to access Medicare plan benefit details 90% faster, improving client enrollment and retention processes. For more information, visit Summed AI.
#Funding#AI#Medicare#Healthcare
🏥💸20 MILLION AMERICANS HIT BY HEALTHCARE "SUBSIDY CLIFF" — PREMIUMS DOUBLE OVERNIGHT
🔹 Congress failed to extend enhanced ACA subsidies expiring Dec 31 — families face 100%+ premium hikes starting January 2026 📈
🔹 Medicare Part B premiums jump $17.90/month to $202.90, eating away entire 2.8% Social Security COLA increase 💰
🔹 Social Security taxable earnings cap rises to $184,500 from $176,100 — higher earners pay more into system 📊
🔹 New senior tax deductions passed but millions may drop coverage entirely due to affordability crisis 🚨
Congress left 20 million hanging while pharma lobbies got their wins 😡🔥
#Healthcare#Medicare
@america
💥 Social Security and Medicare on the brink of disaster! 💔😢
Trust funds rapidly depleting, retirees in jeopardy 😱
Benefit cuts looming, up to 23% reduction! 💔💸
Healthcare access at risk, hospitals facing delays! 🏥😷
Presidential candidates must address this crisis! 🗳️🤔
Bipartisan solutions needed, time is running out! ⏰🤝
Fiscal commission proposed for comprehensive action! 💪💼
Let's save these vital programs for future generations! 🙏🌍
#SocialSecurity#Medicare#RetirementCrisis#BipartisanSolutions
https://www.foxbusiness.com/politics/social-security-trust-fund-path-insolvency
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#The_Barron's 🇺🇸📕[PDF]⬇️
3 #November2025
#Weekly_Magazines
For learning, for free(dom).
@backupofmagazines
Barron’s says Boeing is back, as new leadership tackles years of crises. A warning on “crypto-treasury” firms shows #Bitcoin risk. #Meta’s AI buildout has flaws, while funds that track #Buffett surge. Don’t count out the #Jobs market; the classic 60/40 portfolio is hot again. Features span medical devices, housing-broker disruption, dividend diversification, and mortgage #REITs. Global angles include Gulf states’ #AI push and Argentina’s reform shot. Columns debate #Fed signals, tech overspending, and Musk’s trillion-dollar gambit, plus strategies to lower #Taxes and a key #Medicare to-do for retirees. #Stocks#Markets#Investing#Boeing#Economy#ETFs