TGINSIGHT SIMILAR POSTS
Изворен канал @pythonotes · Post #169 · 21 окт.
А знаете ли вы, что в Bash есть особая переменная "$_" ? Из описания можно узнать, что в переменную "$_" помещается последний аргумент последней команды. Что-то знакомое? Конечно, в Python есть примерно тоже самое. Мы знаем, что дата первого релиза Bash (8 июня 1989) несколько раньше чем первый релиз Python (20 февраля 1991). Если учесть, что по задумке автора Python это агрегация самых успешных практик отовсюду, можно ли сказать что именно эта фишка к нему пришла из Bash? Ни подтверждения ни опровержения я пока не нашел. Давайте просто считать это совпадением 😉 А как это может быть полезно в Bash? Приведу простой пример, который оценят те, кто часто работает в терминале. Допустим, нам надо создать директорию и зайти в неё. Что обычно делаем? :~$ mkdir foldername :~$ cd foldername :~/foldername$ Как это сделать в одну команду? :~$ mkdir foldername && cd foldername :~/foldername$ Уже лучше, но хочется короче, без повторов. Вот тут и пригодится наша переменная. Напомню, что в неё сохраняется последний аргумент предыдущей команды. :~$ mkdir foldername && cd $_ :~/foldername$ _________________ PS. Символы "&&"" разделяют команды и означают, что требуется выполнить вторую команду только если первая завершилась успешно. #linux#tricks
Пребарај: #eleven
@MOONIVRSE · Post #49019 · 17.04.2023 г., 11:11
👩🏻🚀🪐: *𝗕𝗢𝗢𝗠* 🤯🤯 Woah 😵💫😵... What was that 🤔🤔? Its was a super-duper big *boom* 💥💥 that just come to our 𝗯𝗲𝗮𝘂𝘁𝗶𝗳𝘂𝗹 𝗺𝗼𝗼𝗻 🌑🌕, and look. They giving us a super-duper adorable 𝗽𝗮𝗰𝗸𝗮𝗴𝗲 📦📦, lets check it now! Ooh 😯😯, its a #SpaceShip called Karina aespa from our 𝗳𝗿𝗶𝗲𝗻𝗱𝘀 👨👩👧👦, which is #eleven . Ah, thank you @moonivrse lets check the licence first! Oh, its only for PU (Personal Use)
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@MOONIVRSE · Post #49017 · 17.04.2023 г., 11:09
👩🏻🚀🪐: *𝗕𝗢𝗢𝗠* 🤯🤯 Woah 😵💫😵... What was that 🤔🤔? Its was a super-duper big *boom* 💥💥 that just come to our 𝗯𝗲𝗮𝘂𝘁𝗶𝗳𝘂𝗹 𝗺𝗼𝗼𝗻 🌑🌕, and look. They giving us a super-duper adorable 𝗽𝗮𝗰𝗸𝗮𝗴𝗲 📦📦, lets check it now! Ooh 😯😯, its a #SpaceShip called Hanni new jeans from our 𝗳𝗿𝗶𝗲𝗻𝗱𝘀 👨👩👧👦, which is #eleven . Ah, thank you @moonivrse lets check the licence first! Oh, its only for PU (Personal Use)
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@MOONIVRSE · Post #48193 · 27.03.2023 г., 04:56
👩🏻🚀🪐: *𝗕𝗢𝗢𝗠* 🤯🤯 Woah 😵💫😵... What was that 🤔🤔? Its was a super-duper big *boom* 💥💥 that just come to our 𝗯𝗲𝗮𝘂𝘁𝗶𝗳𝘂𝗹 𝗺𝗼𝗼𝗻 🌑🌕, and look. They giving us a super-duper adorable 𝗽𝗮𝗰𝗸𝗮𝗴𝗲 📦📦, lets check it now! Ooh 😯😯, its a #SpaceShip called Mina twice from our 𝗳𝗿𝗶𝗲𝗻𝗱𝘀 👨👩👧👦, which is #eleven . Ah, thank you @moonivrse lets check the licence first! Oh, its only for PU (Personal Use)
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@MOONIVRSE · Post #48191 · 27.03.2023 г., 04:53
👩🏻🚀🪐: *𝗕𝗢𝗢𝗠* 🤯🤯 Woah 😵💫😵... What was that 🤔🤔? Its was a super-duper big *boom* 💥💥 that just come to our 𝗯𝗲𝗮𝘂𝘁𝗶𝗳𝘂𝗹 𝗺𝗼𝗼𝗻 🌑🌕, and look. They giving us a super-duper adorable 𝗽𝗮𝗰𝗸𝗮𝗴𝗲 📦📦, lets check it now! Ooh 😯😯, its a #SpaceShip called Haerin newjeans from our 𝗳𝗿𝗶𝗲𝗻𝗱𝘀 👨👩👧👦, which is #eleven . Ah, thank you @moonivrse lets check the licence first! Oh, its only for PU (Personal Use)
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@MOONIVRSE · Post #48171 · 26.03.2023 г., 15:54
👩🏻🚀🪐: *𝗕𝗢𝗢𝗠* 🤯🤯 Woah 😵💫😵... What was that 🤔🤔? Its was a super-duper big *boom* 💥💥 that just come to our 𝗯𝗲𝗮𝘂𝘁𝗶𝗳𝘂𝗹 𝗺𝗼𝗼𝗻 🌑🌕, and look. They giving us a super-duper adorable 𝗽𝗮𝗰𝗸𝗮𝗴𝗲 📦📦, lets check it now! Ooh 😯😯, its a #SpaceShip called Minji newjeans from our 𝗳𝗿𝗶𝗲𝗻𝗱𝘀 👨👩👧👦, which is #eleven . Ah, thank you @moonivrse lets check the licence first! Oh, its only for PU (Personal Use)
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@MOONIVRSE · Post #48160 · 26.03.2023 г., 15:02
👩🏻🚀🪐: *𝗕𝗢𝗢𝗠* 🤯🤯 Woah 😵💫😵... What was that 🤔🤔? Its was a super-duper big *boom* 💥💥 that just come to our 𝗯𝗲𝗮𝘂𝘁𝗶𝗳𝘂𝗹 𝗺𝗼𝗼𝗻 🌑🌕, and look. They giving us a super-duper adorable 𝗽𝗮𝗰𝗸𝗮𝗴𝗲 📦📦, lets check it now! Ooh 😯😯, its a #SpaceShip called Jennie blackpink from our 𝗳𝗿𝗶𝗲𝗻𝗱𝘀 👨👩👧👦, which is #eleven . Ah, thank you @moonivrse lets check the licence first! Oh, its only for PU (Personal Use)
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@MOONIVRSE · Post #48158 · 26.03.2023 г., 14:57
👩🏻🚀🪐: *𝗕𝗢𝗢𝗠* 🤯🤯 Woah 😵💫😵... What was that 🤔🤔? Its was a super-duper big *boom* 💥💥 that just come to our 𝗯𝗲𝗮𝘂𝘁𝗶𝗳𝘂𝗹 𝗺𝗼𝗼𝗻 🌑🌕, and look. They giving us a super-duper adorable 𝗽𝗮𝗰𝗸𝗮𝗴𝗲 📦📦, lets check it now! Ooh 😯😯, its a #SpaceShip called Karina aespa from our 𝗳𝗿𝗶𝗲𝗻𝗱𝘀 👨👩👧👦, which is #eleven . Ah, thank you @moonivrse lets check the licence first! Oh, its only for PU (Personal Use)
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@MOONIVRSE · Post #48168 · 26.03.2023 г., 15:39
👩🏻🚀🪐: *𝗕𝗢𝗢𝗠* 🤯🤯 Woah 😵💫😵... What was that 🤔🤔? Its was a super-duper big *boom* 💥💥 that just come to our 𝗯𝗲𝗮𝘂𝘁𝗶𝗳𝘂𝗹 𝗺𝗼𝗼𝗻 🌑🌕, and look. They giving us a super-duper adorable 𝗽𝗮𝗰𝗸𝗮𝗴𝗲 📦📦, lets check it now! Ooh 😯😯, its a #BOOM called Ryujin × Haechan from our 𝗳𝗿𝗶𝗲𝗻𝗱𝘀 👨👩👧👦, which is #eleven . Ah, thank you @moonivrse lets check the licence first! Oh, its only for PU (Personal Use
@MOONIVRSE · Post #48166 · 26.03.2023 г., 15:26
👩🏻🚀🪐: *𝗕𝗢𝗢𝗠* 🤯🤯 Woah 😵💫😵... What was that 🤔🤔? Its was a super-duper big *boom* 💥💥 that just come to our 𝗯𝗲𝗮𝘂𝘁𝗶𝗳𝘂𝗹 𝗺𝗼𝗼𝗻 🌑🌕, and look. They giving us a super-duper adorable 𝗽𝗮𝗰𝗸𝗮𝗴𝗲 📦📦, lets check it now! Ooh 😯😯, its a #BOOM called Taeyong × Dita from our 𝗳𝗿𝗶𝗲𝗻𝗱𝘀 👨👩👧👦, which is #eleven . Ah, thank you @moonivrse lets check the licence first! Oh, its only for PU (Personal Use
@MOONIVRSE · Post #48164 · 26.03.2023 г., 15:22
👩🏻🚀🪐: *𝗕𝗢𝗢𝗠* 🤯🤯 Woah 😵💫😵... What was that 🤔🤔? Its was a super-duper big *boom* 💥💥 that just come to our 𝗯𝗲𝗮𝘂𝘁𝗶𝗳𝘂𝗹 𝗺𝗼𝗼𝗻 🌑🌕, and look. They giving us a super-duper adorable 𝗽𝗮𝗰𝗸𝗮𝗴𝗲 📦📦, lets check it now! Ooh 😯😯, its a #BOOM called Ryujin × Haechan from our 𝗳𝗿𝗶𝗲𝗻𝗱𝘀 👨👩👧👦, which is #eleven . Ah, thank you @moonivrse lets check the licence first! Oh, its only for PU (Personal Use
@MOONIVRSE · Post #48162 · 26.03.2023 г., 15:20
👩🏻🚀🪐: *𝗕𝗢𝗢𝗠* 🤯🤯 Woah 😵💫😵... What was that 🤔🤔? Its was a super-duper big *boom* 💥💥 that just come to our 𝗯𝗲𝗮𝘂𝘁𝗶𝗳𝘂𝗹 𝗺𝗼𝗼𝗻 🌑🌕, and look. They giving us a super-duper adorable 𝗽𝗮𝗰𝗸𝗮𝗴𝗲 📦📦, lets check it now! Ooh 😯😯, its a #BOOM called Jennie × Taehyung from our 𝗳𝗿𝗶𝗲𝗻𝗱𝘀 👨👩👧👦, which is #eleven . Ah, thank you @moonivrse lets check the licence first! Oh, its only for PU (Personal Use
@MOONIVRSE · Post #48195 · 27.03.2023 г., 06:51
👩🏻🚀🪐: *𝗕𝗢𝗢𝗠* 🤯🤯 Woah 😵💫😵... What was that 🤔🤔? Its was a super-duper big *boom* 💥💥 that just come to our 𝗯𝗲𝗮𝘂𝘁𝗶𝗳𝘂𝗹 𝗺𝗼𝗼𝗻 🌑🌕, and look. They giving us a super-duper adorable 𝗽𝗮𝗰𝗸𝗮𝗴𝗲 📦📦, lets check it now! Ooh 😯😯, its a #Saturnus called Miyeon cyber theme from our 𝗳𝗿𝗶𝗲𝗻𝗱𝘀 👨👩👧👦, which is #eleven . Ah, thank you @moonivrse lets check the licence first! Oh, its only for PU (Personal Use)