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: #policartoon
@social_justice_watch · Post #17658 · 18.10.2022 г., 17:20
Nobody Back Then Knew Slavery Was Wrong Transcript and description of cartoon: link A #PoliCartoon by me and @hawkins_becky, who did an awesome job with historic settings and costumes! Help us make cartoons at patreon.com/barry. Or by retweeting! :-) source
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@social_justice_watch · Post #17657 · 18.10.2022 г., 17:19
What We Can Afford A #PoliCartoon by @kevinwmoore and I! Transcript: link Read more (and moore) cartoons!: link You can support these cartoons with retweets or at patreon.com/barry! source
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@social_justice_watch · Post #17656 · 18.10.2022 г., 17:18
Just because you're rich white and privileged and you have an super-elite job and you haven't been fired doesn't mean you can't claim quit and claim victimhood! Transcript of #PoliCartoon: link Support by retweeting! Or directly at patreon.com/barry. source
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@social_justice_watch · Post #17655 · 18.10.2022 г., 17:17
Civil Forfeiture! A #PoliCartoon by me and @kevinwmoore! A topic that no one has been asking for a cartoon about! Read more toons! link Support more toons! patreon.com/barrysource
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@social_justice_watch · Post #17653 · 18.10.2022 г., 17:16
Equal Opportunity, Not Equal Outcomes Transcript of #PoliCartoon: link Read more cartoons! link Support more cartoons! patreon.com/barrysource
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@social_justice_watch · Post #17652 · 18.10.2022 г., 17:15
A Right-Winger's Guide to Labor Economics Transcript of #PoliCartoon: link Help us make more cartoons at patreon.com/barry! source
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@social_justice_watch · Post #17650 · 18.10.2022 г., 17:13
A Brief Taxonomy of Pro-Lifers Transcript of #PoliCartoon: link Help us make more cartoons at patreon.com/barry. :-) Read lots more cartoons here! linksource
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@social_justice_watch · Post #17645 · 18.10.2022 г., 04:07
There's Never Been A Worse Time For Free Speech! A #policartoon by me and @hawkins_becky. Transcript: link Help us make more by retweeting, or at patreon.com/barry. A $1 pledge really helps! Lots more toons to read! linksource
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@social_justice_watch · Post #17642 · 18.10.2022 г., 04:00
The Secret Home Lives of Teachers A #PoliCartoon by me and @hawkins_becky. Transcript: link Lots more cartoons to read here: link Help us make more! patreon.com/barrysource
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@social_justice_watch · Post #17639 · 18.10.2022 г., 03:57
My cartoon from May; and, The Washington Post, this week. Just me being a prophet of the incredibly obvious! #PoliCartoon transcript: linksource
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@social_justice_watch · Post #17637 · 18.10.2022 г., 03:47
The Free Speech Absolutist Transcript of #PoliCartoon: link Cartoons! Read more here: link Cartoons! Support 'em here: patreon.com/barrysource
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@social_justice_watch · Post #17636 · 17.10.2022 г., 23:09
On Those Largely Imaginary Cis Men In Women's Bathroom s Pretending To Be Trans Transcript of #PoliCartoon: link (Thread) source
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