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
🔥Exciting Update!🔥
We’ve successfully burned nearly 200,000 $SING, reducing the circulating supply and driving the value of $SING to new heights! 🚀
💎Hold strong and secure your spot to enjoy exclusive benefits coming your way!
Check out details:
1️⃣https://bscscan.com/tx/0x461c7cd24107ea082e79c7427961ae2c044cdd756f94cd1eca0faeac54d83db2
2️⃣https://bscscan.com/tx/0xaceebe720391408dd4613590d8436f07305bb83d0059992bdfe5e97860faa6f6
If you have not got $SING, easily buy at:
- BingX: https://bingx.com/en/spot/SINGUSDT/
- CoinEx: https://www.coinex.com/en/exchange/sing-usdt
- SingSing Mini App: https://t.me/SingSing_TG_bot/app?startapp=_wallet (guideline)
#SING#TokenBurn
Wondering why Van Kedisi Coin is catching eyes?
Check the numbers:
🔥 914M tokens burned
💎 85M in circulation
🧠 No team unlock until $1B cap
Ca: 66bHtzcXqmLgkn668EG4ETzHL3RLz5ybdckqvrPppump
#VanKedisi#DeFi#TokenBurn
https://t.me/vankedisicoin_chat
https://x.com/vankedisicoin
🔣🔣🔣🔣🔣🔣🔣🔣🔣🔣🔣
💸Giveaway 5$❗️
💎Join https://t.me/vankedisicoin_chat
▶️ Comment done below
🔥 Another 121,343 $SING has been burned! 🔥
💨 Reducing supply, increasing value—step by step, we're building a stronger $SING ecosystem.
✔️Check out details: https://bscscan.com/tx/0xb3fac74c5744b68eee62ffa0efbdbe909ec4e719c2b644315a082c32a3aa9634
Stay tuned for more updates! 🚀
#SingSing#TokenBurn#Deflation
🔥 Breaking News!
Another 238,273 $SING has been burned, permanently removed from circulating supply! 🚀
💎 Reducing supply, increasing value — the journey to greater $SING potential continues! 🌟
Check out details here:https://bscscan.com/tx/0x79cd67fa0f249db0305743722bea3e1a68f3a62da74d586aa5f93faeff93d694
#TokenBurn#SingSing#DeflationaryEconomy
We are thrilled to unveil our revamped pre-sale page, promising a lightning-fast and more animated experience! 🌐✨ But wait, there's more – we're introducing a game-changing feature to supercharge our token value: the Automatic Token Burn function! 🔥
In every pre-sale, when you make a purchase without referrals using any amount of BNB, that exact amount will be automatically burned from the total supply. 🔄 This strategic move is crafted to reinforce our token's value, aiming to maintain 1 OBIT = $0.01. 📈💰
Join us on this exhilarating journey toward a stronger and more vibrant community! 🌟💪
🔗 Website: onebit.store
💸 Airdrop: onebit.store/airdrop/index.html
🚨 New Update: Purchase 10,000 OBIT for only 0.05 BNB – offer is limited!
Plus, if you join without a referral, 25% of the purchased amount is burned from the total supply each time. 🔄
#CryptoNews#TokenBurn#PresaleMagic#OBIT#ToTheMoon🚀🌕
🌈 Embark on this journey with us and let's make history together! 🚀🚀🚀
https://www.youtube.com/shorts/S4iu3jA6Kac
🚀 Exciting News! 🚀
Dear Friends, we have revamped our pre-sale page for a lightning-fast and more animated experience! 🌐✨
But that's not all – we've introduced a game-changing feature to boost our token value: the Automatic Token Burn function! 🔥
Now, in every pre-sale, if you make a purchase without referrals using any amount of BNB, that exact amount will be automatically burned from the total supply. 🔄 This strategic move is designed to fortify our token's value and aims to keep 1 OBIT = $0.01. 📈💰
Join us in this exciting journey towards a stronger and more vibrant community! 🌟💪
Website: https://onebit.store/
Airdrop: https://onebit.store/airdrop/index.html
#CryptoNews#TokenBurn#PresaleMagic#OBIT#ToTheMoon🚀
We are thrilled to unveil our revamped pre-sale page, promising a lightning-fast and more animated experience! 🌐✨ But wait, there's more – we're introducing a game-changing feature to supercharge our token value: the Automatic Token Burn function! 🔥
In every pre-sale, when you make a purchase without referrals using any amount of BNB, that exact amount will be automatically burned from the total supply. 🔄 This strategic move is crafted to reinforce our token's value, aiming to maintain 1 OBIT = $0.01. 📈💰
Join us on this exhilarating journey toward a stronger and more vibrant community! 🌟💪
🔗 Website: onebit.store
💸 Airdrop: onebit.store/airdrop/index.html
🚨 New Update: Purchase 10,000 OBIT for only 0.05 BNB – offer is limited!
Plus, if you join without a referral, 25% of the purchased amount is burned from the total supply each time. 🔄
#CryptoNews#TokenBurn#PresaleMagic#OBIT#ToTheMoon🚀🌕
🌈 Embark on this journey with us and let's make history together! 🚀🚀🚀
https://www.youtube.com/shorts/S4iu3jA6Kac
🚀 Exciting News! 🚀
Dear Friends, we have revamped our pre-sale page for a lightning-fast and more animated experience! 🌐✨
But that's not all – we've introduced a game-changing feature to boost our token value: the Automatic Token Burn function! 🔥
Now, in every pre-sale, if you make a purchase without referrals using any amount of BNB, that exact amount will be automatically burned from the total supply. 🔄 This strategic move is designed to fortify our token's value and aims to keep 1 OBIT = $0.01. 📈💰
Join us in this exciting journey towards a stronger and more vibrant community! 🌟💪
Website: https://onebit.store/
Airdrop: https://onebit.store/airdrop/index.html
#CryptoNews#TokenBurn#PresaleMagic#OBIT#ToTheMoon🚀
We are thrilled to unveil our revamped pre-sale page, promising a lightning-fast and more animated experience! 🌐✨ But wait, there's more – we're introducing a game-changing feature to supercharge our token value: the Automatic Token Burn function! 🔥
In every pre-sale, when you make a purchase without referrals using any amount of BNB, that exact amount will be automatically burned from the total supply. 🔄 This strategic move is crafted to reinforce our token's value, aiming to maintain 1 OBIT = $0.01. 📈💰
Join us on this exhilarating journey toward a stronger and more vibrant community! 🌟💪
🔗 Website: onebit.store
💸 Airdrop: onebit.store/airdrop/index.html
🚨 New Update: Purchase 10,000 OBIT for only 0.05 BNB – offer is limited!
Plus, if you join without a referral, 25% of the purchased amount is burned from the total supply each time. 🔄
#CryptoNews#TokenBurn#PresaleMagic#OBIT#ToTheMoon🚀🌕
🌈 Embark on this journey with us and let's make history together! 🚀🚀🚀
https://www.youtube.com/shorts/S4iu3jA6Kac
🔥 Breaking News: We just burned over 1,000,000 $SING tokens!
This move reinforces our commitment to boosting $SING's valuealongside the groundbreaking innovations we're building for the SingSing community. 🚀
🔮 Here's a sneak peek: Revolutionary AI coming to SingSing will forever change the face of gaming. Stay tuned!
Check out burning details: https://bscscan.com/tx/0x46ec5084869ae42ca73c1769deaba4fa952c5f790338be54ad415102b3a05c51
#SingSingAI#TokenBurn#NextGenGaming#BlockchainInnovation