TGINSIGHT SIMILAR POSTS
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
Пребарај: #iceland
@internationalgeographic · Post #5792 · 03.07.2025 г., 09:44
#Iceland🇮🇸 A special place in Iceland is considered to be the black beach. It was here that such cult movies as "The Lord of the Rings", "Game of Thrones" and "Star Wars" were filmed. The black beach was formed as a result of volcanic activity. This event happened many years ago
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@internationalgeographic · Post #5448 · 24.02.2025 г., 00:26
#Iceland, Gudlfoss 🇮🇸 Gyudlfoss is a waterfall in Iceland, in the Syudurland region. The depth of the waterfall to the place of water falling in the valley is about 70 meters. The Güdlfoss itself consists of two steps - 21 meters and 11 meters high, dumped to each other at an angle of 90 °. It is considered one of the most beautiful places in Iceland and is the most visited tourists.
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@VOYAGE · Post #1690 · 16.03.2026 г., 13:14
🌟Breathtaking Views of Iceland! 🟠A mesmerizing landscape where a powerful waterfall meets silent green hills and dramatic clouds on the horizon. 🟠Nature here stuns with its beauty and scale, offering perfect spots for adventure seekers and photography enthusiasts. Feel the grandeur and tranquility of these magnificent landscapes! #Iceland | @voyage
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@VOYAGE · Post #1612 · 30.11.2025 г., 13:14
🗺 Iceland 🇮🇸 Following a recent volcanic eruption, the main highway to the Icelandic town of Grindavík is now impassable, and the surrounding area is covered in lava for several kilometers. #Iceland | @voyage
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@VOYAGE · Post #1609 · 27.11.2025 г., 13:14
Iceland🇮🇸 🟠A canyon located in the Jokuldalur Valley, Iceland. 🟠It is famous for its columnar basalt formations and blue-green water. #Iceland | @voyage
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@VOYAGE · Post #1541 · 25.08.2025 г., 12:14
Iceland🇮🇸 🟠A canyon located in the Jokuldalur Valley, Iceland. 🟠It is famous for its columnar basalt formations and blue-green water. #Iceland | @voyage
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@VOYAGE · Post #1531 · 15.08.2025 г., 12:14
Iceland 🇮🇸 🟠After the eruption of Eldfell volcano on Heimaey Island, a stunning natural wonder emerged — a rock formation shaped like an elephant drinking from the Atlantic. 📏 📏 📏 📏 📏 📏 📏 📏 #Iceland | @voyage
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@VOYAGE · Post #1525 · 09.08.2025 г., 12:14
⚡️Hallgrímskirkja – a majestic church in the heart of Reykjavík! ✨🏔️ 🟠Inside, it houses a massive pipe organ with 5,275 pipes, standing 15 meters tall and weighing 25 tons – a true musical masterpiece! 📏 📏 📏 📏 📏 📏 📏 📏 #Iceland | @voyage
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@VOYAGE · Post #1444 · 07.06.2025 г., 12:14
⭐️ The rugged beauty of Iceland 📏 📏 📏 📏 📏 📏 📏 📏 #Iceland🇮🇸@voyage
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@VOYAGE · Post #1386 · 11.04.2025 г., 12:14
✨ Hallgrímskirkja — the highest point in Reykjavik. 🟠Imagine a majestic church rising above the city like a guardian of time. Its unique architecture and panoramic views of Reykjavik make it a must-visit place. 📏 📏 📏 📏 📏 📏 📏 📏 #Iceland🇮🇸@voyage
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@VOYAGE · Post #1372 · 29.03.2025 г., 13:14
😍The breathtaking beauty of Iceland 📏 📏 📏 📏 📏 📏 📏 📏 #Iceland🇮🇸@voyage
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@VOYAGE · Post #1360 · 17.03.2025 г., 13:14
⭐️ The rugged beauty of Iceland 📏 📏 📏 📏 📏 📏 📏 📏 #Iceland🇮🇸@voyage
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