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: #hawkerheritage
@NEASingapore · Post #841 · 15.06.2024 г., 01:01
#HawkerHeritage📢 Originally the Seng Poh Road Market in 1951, Tiong Bahru Market served as a bustling centre for the community. Next time you’re there for a meal, don’t forget to soak up the history & nostalgia! #OurHawkerCulture#OurHawkerCentres
@NEASingapore · Post #832 · 30.05.2024 г., 01:03
#HawkerHeritage Fancy A Feast in a Garden 🌴? Since 1971, Newton Food Centre hawker has been serving up Singapore’s culinary diversity with its unique 'garden city' charm. Forward this post to someone who’ll appreciate this picturesque setting! #OurHawkerCulture#OurHawkerCentres#HawkerHeritage
@NEASingapore · Post #830 · 24.05.2024 г., 01:01
#HawkerHeritage📜 Tekka Centre: Let’s time-travel back to 1915, where 'Kandang Kerbau' and ‘Tekka’ tell tales of cattle and wild bamboo. What a journey for the senses! #OurHawkerCulture#OurHawkerCentres
@NEASingapore · Post #826 · 17.05.2024 г., 01:01
#HawkerHeritage🌟 People’s Park Food Centre: A Culinary Heritage Site 🌟 Starting as a hawker shelter in 1923 and evolving into the largest market by 1940, it's a place where history and cuisine meet. Share this with someone that you’ll like to explore this iconic food haven with! #OurHawkerCulture#OurHawkerCentres
@NEASingapore · Post #823 · 09.05.2024 г., 01:00
#HawkerHeritage🍲✨ Experience a rich blend of history and culinary excellence at Singapore's largest hawker centre: Chinatown Complex Market! Established in 1981 for the last of Chinatown’s street hawkers, it's now a vibrant gastronomic haven with around 700 stalls. Share this with your favourite foodies! #OurHawkerCulture#OurHawkerCentres
@NEASingapore · Post #834 · 06.06.2024 г., 01:01
#HawkerHeritage Changi Village Hawker Centre: From a military past to a seaside food haunt 🌴#DidYouKnow This dining spot was part of Changi's transformation into a resort? An idyllic memory to savour with your favourite hawker delights! #OurHawkerCulture#OurHawkerCentres
@NEASingapore · Post #815 · 26.04.2024 г., 02:13
#HawkerHeritage Architectural elegance meets culinary delight at Old Airport Road Food Centre 🍴🏛️#DidYouKnow that its modern structure was designed in '73 to match the housing estates in the area? #OurHawkerCulture#OurHawkerCentres
@NEASingapore · Post #812 · 19.04.2024 г., 01:02
#HawkerHeritage#DidYouKnow Adam Road Food Centre is nine-sided and almost circular? This popular spot is famous for its nasi lemak and a variety of delightful treats! This is your sign to organise that makan trip🍴 #OurHawkerCulture#OurHawkerCentres
@NEASingapore · Post #808 · 08.04.2024 г., 04:03
❤️#HawkerHeritage❤️#DidYouKnow that Maxwell Food Centre was once a wet market? It was also one of the places where the poor and displaced could find cheap meals after WWII. Today, it’s a treasure trove of local delights! #OurHawkerCulture#OurHawkerCentres