SG MRT Updates
@sgmrt · Post #2390 · 19.07.2025 г., 06:49
[BPLRT]: Due to a train fault, trains are moving slower towards #ChoaChuKang on Service A. We are investigating the fault. https://bit.ly/450rFrj - SMRT
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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
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SG MRT Updates
@sgmrt · Post #1961 · 03.06.2024 г., 12:39
[UPDATE] [NSL] : South bound train service from #ChoaChuKang to #Woodlands has resumed. Free Regular Bus and Bridging Bus have ceased. - SMRT
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SG MRT Updates
@sgmrt · Post #1960 · 03.06.2024 г., 12:14
[UPDATE] [NSL] : South bound train service from #ChoaChuKang to #Woodlands has resumed. Free Regular Bus and Bridging Bus Services are still available between #ChoaChuKang and #Woodlands. - SMRT
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SG MRT Updates
@sgmrt · Post #1959 · 03.06.2024 г., 11:54
[UPDATE] [NSL]North bound trains from #Woodlands towards #ChoaChuKang is in service. - SMRT
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SG MRT Updates
@sgmrt · Post #1958 · 03.06.2024 г., 11:49
[UPDATE] [NSL]Due to traction power fault, there is no South bound train service from #ChoaChuKang to #Woodlands. Free Regular Bus and Bridging Bus Services are available between #ChoaChuKang and #Woodlands, passengers are advised to take alternative lines via [TEL] & [CCL] line. - SMRT
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SG MRT Updates
@sgmrt · Post #1617 · 05.02.2023 г., 23:53
[NSL] UPDATE: Fault cleared, train services are progressively being restored. You may still experience crowding at some stations. Free regular bus & free bridging bus services are still available btwn #ChoaChuKang and #Yishun. - SMRT
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SG MRT Updates
@sgmrt · Post #1615 · 05.02.2023 г., 23:39
[NSL] UPDATE: Fault cleared, train services are progressively being restored. Pls add 5mins train travel time btwn #Yishun and #ChoaChuKang. Free regular bus & free bridging bus services are still available btwn #ChoaChuKang and #Yishun. - SMRT
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SG MRT Updates
@sgmrt · Post #1614 · 05.02.2023 г., 23:23
[NSL] UPDATE: Fault cleared, train services are progressively being restored. Pls add 15mins train travel time btwn #Yishun and #ChoaChuKang. Free regular bus and free bridging bus services are still available btwn #ChoaChuKang and #Yishun. - SMRT
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SG MRT Updates
@sgmrt · Post #1613 · 05.02.2023 г., 23:10
[NSL]: UPDATE: Due to a track fault, pls add 25mins train travel time btwn #ChoaChuKang and #Yishun. Free regular bus is available btwn #ChoaChuKang and #Yishun. You may take TEL or other alternative lines to city area. - SMRT
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SG MRT Updates
@sgmrt · Post #1612 · 05.02.2023 г., 23:10
[NSL]: UPDATE: Due to a track fault, pls add 25mins train travel time btwn #ChoaChuKang and #Yishun. Free regular bus and free bridging bus services are available btwn #ChoaChuKang and #Yishun. You may take TEL or other alternative lines to city area. - SMRT
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SG MRT Updates
@sgmrt · Post #1611 · 05.02.2023 г., 22:53
[NSL]: UPDATE: Due to a track fault, pls add 15mins train travel time btwn #ChoaChuKang and #Yishun. Free regular bus is available btwn #ChoaChuKang and #Yishun. You may also take alternative line to city area. - SMRT
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SG MRT Updates
@sgmrt · Post #1610 · 05.02.2023 г., 22:53
[NSL]: UPDATE: Due to a track fault, pls add 15mins train travel time btwn #ChoaChuKang and #Yishun. Free regular bus is available btwn #ChoaChuKang and #Yishun. You may take TEL or other alternative lines to city area. - SMRT
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