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
💥#Example of Full Liquidation on Aqua Protocol
Triggering Liquidation: When the overall liquidation mode is activated.
Initial Setup:
• TON Value: 1 TON = $2.14
• Alice's Deposit: 1,000 TON, valued at about $2,140
• Minted AquaUSD: Alice mints 1,050 AquaUSD
• Initial Collateral Ratio (CR): ~203.81% (calculated as ($2,140 / $1,050) * 100%)
🔻Price Drop:
• New TON Price: Falls to $1.30
• Time Open: Position has been open for one year
• Accrued Borrowing Rate: 0.5% per year
• Borrowing Fee: Alice owes 5.25 AquaUSD for borrowing
Updated Values:
• Updated Collateral Value: 1,000 TON is now worth $1,300 (1,000 * $1.30)
• Updated CR: ~123% (calculated as ($1,300 / (1,050 AquaUSD + 5.25 AquaUSD)) * 100%)
⚖️Liquidation Calculation:
• Since CR < 125%, Alice’s position is eligible for full liquidation, allowing 1,050 AquaUSD to be liquidated.
🔄Liquidation Process:
• Bob's Action: Bob fully liquidates Alice’s position by repaying 1,050 AquaUSD.
• Borrowing Fees: 0.5% of 1,050 AquaUSD equals 4 TON ($5.25), paid to the Aqua Protocol treasury.
• Repayment Fee: Since the amount is over $1,000, a 0.5% fee applies, which is another 4 TON ($5.25), also paid to the treasury.
• Keeper Fee: Cathy, the Keeper, earns a 3% fee, totaling 24 TON ($31.50).
• Liquidator Fee: Bob receives the remaining collateral, totaling 968 TON (1,000 - 4 - 4 - 24), worth $1,258—a profit of 19.8%.
📊Post-Liquidation Status:
• Alice's Remaining Debt: Fully cleared to 0 AquaUSD
• Remaining Collateral: Fully liquidated to 0 TON
As a result, Bob earns a 19.8% premium for successfully executing the liquidation, with 3% of the reward going to the Keeper.
By participating in Aqua Protocol as a liquidator, redemption provider, or Keeper, you can help maintain the stability of AquaUSD and protect the system. Always remember the importance of a healthy collateral ratio to reduce the risk of liquidation and maximize rewards within the protocol!
💡#Example of Partial Liquidation on Aqua Protocol
Initial Setup:
• Value of TON: 1 TON = $2.14
• Alice's Deposit: 1,000 TON, worth about $2,140
• Minted AquaUSD: Alice mints 1,050 AquaUSD
• Initial Collateral Ratio (CR): ~203.81% (calculated as ($2,140 / $1,050) * 100%)
🔻Price Drop:
• New TON Price: The price drops to $1.47
• Time Open: The position has been open for one year
• Accrued Borrowing Rate: 0.5% per year
• Borrowing Fee: Alice owes 5.25 AquaUSD for borrowing
Updated Values:
• New Collateral Value: 1,000 TON is now worth $1,470 (1,000 * $1.47)
• Updated CR: ~139% (calculated as ($1,470 / (1,050 AquaUSD + 5.25 AquaUSD)) * 100%)
⚖️Liquidation Calculation:
• Maximum Liquidation Amount: The system allows up to $645 of Alice’s AquaUSD to be liquidated to maintain a safe collateral ratio.
🔄Liquidation Process:
• Bob's Action: Bob repays 645 AquaUSD to partially liquidate Alice’s position.
• Collateral Received by Bob: He gets $703 back, equivalent to about 478 TON (645 AquaUSD * 1.09).
• Keeper’s Reward (Cathy): Cathy earns $19.35 for assisting with the liquidation (3% of 645 AquaUSD).
📊Post-Liquidation Status:
• Alice's Remaining Debt: After the liquidation, Alice owes 405 AquaUSD (1,050 - 645).
• Repayment Fee: Alice pays a 0.5% fee on the 645 AquaUSD, totaling 3.26 AquaUSD.
• Total Fees Charged: Including borrowing fees, Alice pays back a total of approximately 5.8 TON.
• Remaining Collateral: Alice has 503.2 TON left after the liquidation (1,000 - 5.8 - 478 - 13 TON).
• Updated CR: Her new collateral ratio is about 183% (calculated as ($740 / 405 AquaUSD) * 100%).
This example illustrates the Aqua Protocol’s partial liquidation process, helping maintain a safe collateral ratio during market fluctuations. Keeping a healthy CR minimizes liquidation risks and maximizes your collateral protection.
@pic
Qué puede hacer este bot?
Este bot puede ayudarle a encontrar y compartir imágenes. Funciona automáticamente, sin necesidad de agregarlo en cualquier lugar. Simplemente abra cualquiera de sus chats y escriba @pic something en el campo de mensaje. A continuación, pulse sobre un resultado para enviar.
Idioma: Inglés
(visto en @BotsGram_cu)
#share, #result, #example, #funny, #message, #pic, #images