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
MicroStrategy bought another 18,300 $BTC($1.11B) at $60,408 between Aug 6 and Sept 12!
#MicroStrategy currently holds 244,800 $BTC($14.15B), and the average buying price is $38,585.
At current prices, the profit is ~$4.71B!
💰#MicroStrategy has announced an offer of convertible senior bonds maturing in 2032 in the amount of $500 million
The company intends to use the net proceeds from the sale of bonds to purchase additional $BTC and for general corporate purposes.
⚡️ MicroStrategy purchased another $ 14,620BTC for $ 615.7 million at an average price of $42110 per BTC
As of December 26, 2023 — #MicroStrategy stores 189150 BTC purchased for $5.9 billion at an average price of $31,168
Just in: Strategy (prev. #MicroStrategy) has bought 4,225 $BTC for $472.5M at an average price of $111,827 per #Bitcoin
They now hold 601,550 $BTC, bought for a total of approximately $42.87B at an average price of $71,268 per #Bitcoin💰
Strategy (prev. #MicroStrategy) has bought 1,031 $BTC for $76.6M at an average price of $74,326 per #Bitcoin.
They now hold 762,099 $BTC, bought for a total of ~$57.69B at an average price of $75,694 per #Bitcoin.
https://x.com/OnchainLens/status/2036053169927852109
Follow @onchainlens for more onchain updates
Strategy (prev. #MicroStrategy) has bought 22,337 $BTC for $1.57B at an average price of $70,194 per #Bitcoin.
They now hold 761,068 $BTC, bought for a total of ~$57.61B at an average price of $75,696 per #Bitcoin.
https://x.com/OnchainLens/status/2033514795459318052
Follow @onchainlens for more onchain updates
Strategy (prev. #MicroStrategy) has bought 17,994 $BTC for $1.28B at an average price of $70,946 per #Bitcoin.
They now hold 738,731 $BTC, bought for a total of ~$56.04B at an average price of $75,862 per #Bitcoin.
https://x.com/OnchainLens/status/2030978061630603508
Follow @onchainlens for more onchain updates
Strategy (prev. #MicroStrategy) has bought 3,015 $BTC for $204.1M at an average price of $67,700 per #Bitcoin.
They now hold 720,737 $BTC, bought for a total of ~$54.77B at an average price of $75,985 per #Bitcoin.
https://x.com/i/status/2028459100837974064
Follow @onchainlens for more onchain updates
Strategy (prev. #MicroStrategy) has bought 2,486 $BTC for $168.4M at an average price of $67,710 per #Bitcoin.
They now hold 717,131 $BTC, bought for a total of ~$54.52B at an average price of $76,027 per #Bitcoin.
https://x.com/OnchainLens/status/2023746019868160182
Follow @onchainlens for more onchain updates