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Computer Science/๊ธฐํƒ€ 13

[pip install ์—๋Ÿฌ] (ํ•ด๊ฒฐ๋ฒ• ํฌํ•จ) ERROR: Could not install packages due to an OSError: HTTPSConnectionPool(host='files.pythonhosted.org', port=443): Max retries exceeded with url:

pip install jupyter ๋กœ ์ฅฌํ”ผํ„ฐ ๋…ธํŠธ๋ถ ์„ค์น˜ํ•˜๋ คํ•˜๋Š”๋ฐ ๊ณ„์™ ๋‹ค์Œ๊ณผ ๊ฐ™์€ ์—๋Ÿฌ๊ฐ€ ๋–ณ๋‹ค ERROR: Could not install packages due to an OSError: HTTPSConnectionPool(host='files.pythonhosted.org', port=443): Max retries exceeded with url: ํ•ด๊ฒฐ๋ฐฉ๋ฒ•์€ ๋‹ค์Œ๊ณผ ๊ฐ™๋‹ค pip install --trusted-host pypi.python.org --trusted-host pypi.org --trusted-host files.pythonhosted.orgjupyter ์œˆ๋„์šฐ์—์„œ jupyter notebook ์„ค์น˜ ์„ฑ๊ณต!!!

[git] fatal: the remote end hung up unexpectedly ์˜ค๋ฅ˜ (ํ•ด๊ฒฐ๋ฐฉ๋ฒ• ํฌํ•จโ—โ—)

git push๋ฅผ ํ•˜๋Š”๋ฐ ๋‹ค์Œ๊ณผ ๊ฐ™์€ ์˜ค๋ฅ˜ ๋ฉ”์„ธ์ง€๋ฅผ ๋งž์ดํ–ˆ๋‹ค fatal: the remote end hung hup unexpectedly send-pack: unexpected disconnect while reading sideband packet (์ฐธ๊ณ ๋กœ ๋‚˜๋Š” Window ์œˆ๋„์šฐํ™˜๊ฒฝ์—, Git Bash๋ฅผ ์ด์šฉํ•˜๊ณ  ์žˆ๋‹ค.) ํ•ด๊ฒฐ๋ฐฉ๋ฒ•์€ ๋‹ค์Œ๊ณผ ๊ฐ™๋‹ค git config --local http.postBuffer 1024M git config --local http.maxRequestBuffer 1024M git config --local pack.deltaCacheSize 1024M git config --local pack.packSizeLimit 1024M git config --local pack...

[๋น„ํŠธ์ฝ”์ธ] ๋น„ํŠธ์ฝ”์ธ ์ฑ„๊ตด์ด๋ž€? ์‰ฝ๊ฒŒ ์„ค๋ช…! โ›

๋น„ํŠธ์ฝ”์ธ์€ 2009๋…„์— ์‹œ์ž‘๋œ ์•”ํ˜ธํ™”ํ์ฃ ?? ์•”ํ˜ธํ™”ํ์˜ ๊ฐ€์žฅ ํฐ ํŠน์ง•์€ ์–ด๋Š๋‚˜๋ผ๋“  ์ •๋ถ€, ๊ธฐ์—…, ์€ํ–‰ ๋“ฑ์—์„œ ์ปจํŠธ๋กคํ•  ์ˆ˜ ์—†๋Š” ํ™”ํ๋ผ๋Š” ์ ์ธ๋ฐ์š”, ์ด์ค‘ ํ•˜๋‚˜๊ฐ€ ๋น„ํŠธ์ฝ”์ธ ์ž…๋‹ˆ๋‹ค! ์–ด์จ‹๋“  ๋ˆ„๊ตฐ๊ฐ€๋Š” ์ด ํ™”ํ๋ฅผ ์ฐ์–ด๋‚ด์•ผ ์‚ฌ๋žŒ๋“ค์ด ์‚ฌ๊ณ  ํŒ” ์ˆ˜ ์žˆ๋Š”๊ฑฐ๊ฒ ์ฃ ?? ์ด๋•Œ ์•”ํ˜ธํ™”ํ๋ฅผ ์ฐ์–ด๋‚ด๋Š”๊ฑธ ์ฑ„๊ตดํ•œ๋‹ค๊ณ  ํ‘œํ˜„ํ•˜๋Š”๋ฐ์š”! ์™œ ๊ทธ๋ ‡๊ฒŒ ํ‘œํ˜„์„ ํ•˜๋ƒ๊ตฌ์š”? ๋Œ€๊ฒŒ ๋น„ํŠธ์ฝ”์ธ์„ '๊ธˆ'์— ๋น„์œ ๋ฅผ ๋งŽ์ด ํ•ฉ๋‹ˆ๋‹ค ๊ธˆ์ด ๊ฐ€์ง„ ํฌ์†Œ์„ฑ ๋•Œ๋ฌธ์— ๊ทธ ๊ฐ€์น˜๋ฅผ ์ธ์ •๋ฐ›๋“ฏ์ด ๋น„ํŠธ์ฝ”์ธ๋„ ์ฐ์–ด๋‚ผ ์ˆ˜ ์žˆ๋Š” ์ตœ๋Œ€๋Ÿ‰์ด ์ •ํ•ด์ ธ์žˆ์–ด์š”! ์ด๋Ÿฐ์ ๊ณผ ๋”๋ถˆ์–ด ๊ธˆ๊ด‘์—์„œ ๊ธˆ์„ ์ฑ„๊ตดํ•˜๋Š” ๊ฒƒ์— ๋น„์œ ํ•˜์—ฌ ๋น„ํŠธ์ฝ”์ธ๋„ ์ฑ„๊ตดํ•œ๋‹ค๊ณ  ํ‘œํ˜„ํ•ฉ๋‹ˆ๋‹ค ๐Ÿ˜Š ๊ทธ๋ ‡๋‹ค๋ฉด ์ฑ„๊ตด์€ ์–ด๋–ป๊ฒŒ ํ•˜๋‚˜์š”?? ๋น„ํŠธ์ฝ”์ธ์„ ์ฑ„๊ตดํ•˜๊ธฐ ์œ„ํ•ด์„œ๋Š” ์ปดํ“จํ„ฐ๋Š” ๊ต‰์žฅํžˆ ์–ด๋ ค์šด ์ˆ˜ํ•™๋ฌธ์ œ๋ฅผ ํ’€์–ด์•ผํ•˜๋Š”๋ฐ์š”, ๋ฌธ์ œ๋ฅผ ํ’€๋ฉด ๋ธ”๋ก ํ•˜๋‚˜๋ฅผ ๋ฐ›์Šต๋‹ˆ๋‹ค. ๋ธ”๋ก..

[htop] htop install ์—๋Ÿฌ 'E: Unable to locate package htop' ํ•ด๊ฒฐ๋ฐฉ๋ฒ• !!

htop install ํ•˜๋ ค๊ณ  ํ• ๋•Œ ๋‹ค์Œ๊ณผ ๊ฐ™์€ ์—๋Ÿฌ๋ฉ”์„ธ์ง€๊ฐ€ ๋œจ๋Š” ๊ฒฝ์šฐ ..! user@test:~$ sudo apt-get install htop Reading package lists... Done Building dependency tree Reading state information... Done E: Unable to locate package htop ํ•ด๊ฒฐ๋ฐฉ๋ฒ•์€ ๋งค์šฐ ๊ฐ„๋‹จํ•˜๋‹ค sudo apt-get update ๋ฅผ ํ•ด์ฃผ๊ณ  ๋‹ค์‹œ installํ•˜๋ฉด ๋œ๋‹ค !!! user@test:~$ sudo apt-get update Get:1 http://security.ubuntu.com/ubuntu bionic-security InRelease [88.7 kB] Get:2 http://archive.ubu..

[python] ํ…์ŠคํŠธ ํŒŒ์ผ ์ž๋ฅด๊ธฐ (text file crop)

#ํŒŒ์ด์ฌ ํ…์ŠคํŠธ ํŒŒ์ผ ๋‚ ๋ฆฌ๊ธฐ #python textfile crop #python textfile delete line ๋‹ค์Œ๊ณผ ๊ฐ™์€ ํ…์ŠคํŠธํŒŒ์ผ์ด ์žˆ๋‹ค๊ณ  ํ•˜์ž ์—ฌ๊ธฐ์„œ ํŠน์ • line ํ˜น์€ ์—ฌ๋Ÿฌ๊ฐœ์˜ line์„ ์ง€์šฐ๊ณ  ์‹ถ๋‹ค๋ฉด..?? ์ ˆ๋ฐ˜์„ ๋‚ ๋ ค๋ฒ„๋ฆฌ๊ณ  ์‹ถ๋‹ค๋ฉด?? line 1 of the text file line 2 of the text file line 3 of the text file line 4 of the text file line 5 of the text file # 1. ํ…์ŠคํŠธ ํŒŒ์ผ ์ฝ์–ด๋“ค์ด๊ธฐ # filename์— ํ…์ŠคํŠธํŒŒ์ผ ๊ฒฝ๋กœ๋ฅผ string์œผ๋กœ ๋„ฃ์–ด์ค€๋‹ค filename = './textfile.txt' text_file = opend(filename).readlines() # 2. ์ง€์šฐ๊ณ  ์‹ถ์€ li..

[๊ฐœ๋ฐœ์šฉ์–ด] pilot ์ด๋ž€?

Pilot ์›์‹œ ํ”„๋กœ๊ทธ๋žจ์ด๋‚˜ ์‹œํ—˜ ํ”„๋กœ๊ทธ๋žจ ๋“ฑ์„ ์‹œํ—˜ํ•˜๋Š” ์ผ ์ฆ‰, ํ”„๋กœ๊ทธ๋žจ์„ ์‹ค์ œ๋กœ ์šด์šฉํ•˜๊ธฐ ์ „์— ์˜ค๋ฅ˜, ๋˜๋Š” ๋ถ€์กฑํ•œ ์ ์„ ์ฐพ๊ธฐ ์œ„ํ•˜์—ฌ ์‹ค์ œ ์ƒํ™ฉ๊ณผ ์œ ์‚ฌํ•œ ์กฐ๊ฑด์—์„œ ์‹œํ—˜๊ฐ€๋™ํ•˜๋Š” ํ–‰์œ„ ๊ทธ๋ ‡๊ธฐ์— ์ƒˆ๋กœ์šด ์„œ๋น„์Šค ์ถœ์‹œ ์ „์— ๋งŽ์ด ์‚ฌ์šฉ๋จ ๋น„์Šทํ•˜๊ฒŒ ์‹œ๋ฒ”ํ…Œ์ŠคํŠธ ํ†ตํ•ฉํ…Œ์ŠคํŠธ ๋‹จ๊ณ„์˜ SW ๊ฒฐํ•จ์ธก์ •ํ…Œ์ŠคํŠธ ํ’ˆ์งˆ ๊ฒ€์ฆ ๋ผ๊ณ  ๋ณผ ์ˆ˜ ์žˆ๋‹ค reference : m.blog.naver.com/PostView.nhn?blogId=musalyh&logNo=220990847736&proxyReferer=https:%2F%2Fwww.google.com%2F

[Window10 ๋‹จ์ถ•ํ‚ค] ์œˆ๋„์šฐ10 ์œ ์šฉํ•œ ๋‹จ์ถ•ํ‚ค ๐Ÿ•น

[๊ฐ€์ƒ ๋ฐ์Šคํฌํ†ฑ]Win + Tab : ์œˆ๋„ 10์˜ ํ…Œ์Šคํฌ ๋ฐ”(Task bar)๋ฅผ ์—ฝ๋‹ˆ๋‹ค.Win + Ctrl + D : ๊ฐ€์ƒ ๋ฐ์Šคํฌํ†ฑ(Virture Desktop)์„ ํ•˜๋‚˜ ๋งŒ๋“ญ๋‹ˆ๋‹ค.Win + Ctrl + F4 : ํ˜„์žฌ์˜ ๊ฐ€์ƒ ๋ฐ์Šคํฌํ†ฑ์„ ๋‹ซ์Šต๋‹ˆ๋‹ค.Win + Ctrl + ์ขŒ์šฐ ๋ฐฉํ–ฅํ‚ค : ๋‹ค๋ฅธ ๊ฐ€์ƒ ๋ฐ์Šคํฌํ†ฑ ํ™”๋ฉด์œผ๋กœ ์ด๋™ํ•ฉ๋‹ˆ๋‹ค. [๋“€์–ผ๋ชจ๋‹ˆํ„ฐ]Win + P : ํ”„๋กœ์ ํŠธ, ๋“€์–ผ๋ชจ๋‹ˆํ„ฐ ์„ค์ •์ฐฝWin + Shift + ์ขŒ/์šฐ ๋ฐฉํ–ฅํ‚ค : ํ˜„์žฌ ์ฐฝ์„ ํ™•์žฅ๋œ ํ™”๋ฉด์œผ๋กœ ์ด๋™์‹œํ‚ฌ ์ˆ˜ ์žˆ์Šต๋‹ˆ๋‹ค. ํ”„๋กœ์ ํ„ฐ๋‚˜ ๋“€์–ผ ๋ชจ๋‹ˆํ„ฐ ๊ตฌ์„ฑ์œผ๋กœ ํ™”๋ฉด์„ ํ™•์žฅํ–ˆ์„ ๋•Œ ์‚ฌ์šฉํ•˜๋ฉด ์ข‹์Šต๋‹ˆ๋‹ค. [์œˆ๋„์šฐ Sanp, ์ž‘์—…์ „ํ™˜]Win + ์ขŒ/์šฐ ๋ฐฉํ–ฅํ‚ค : ์‚ฌ์šฉ์ค‘์ธ ์ฐฝ์„ ์ขŒ์šฐ๋กœ ์ด๋™ ์‹œํ‚ต๋‹ˆ๋‹ค.Win + Tab : ์œˆ๋„์šฐ ์ž‘์—…๋ณด๊ธฐ๋ฅผ ์‹คํ–‰ํ•ฉ๋‹ˆ๋‹ค. (์—ด๋ ค์žˆ๋Š” ๋ชจ๋“  ์ฐฝ์„ ..

[์ •๋ณด์ฒ˜๋ฆฌ๊ธฐ์‚ฌ] ํ•„๊ธฐ ๊ด€๋ จ ์ž๋ฃŒ(์š”์•ฝ๋ณธ, ๊ธฐ์ถœ)์™€ ์‹œํ—˜ ํ›„๊ธฐ

"์ •๋ณด์ฒ˜๋ฆฌ๊ธฐ์‚ฌ" ์‹œํ—˜์— ๋Œ€ํ•œ ๋น ๋ฅธ ์ •๋ณด ๋‚˜์—ด! ์ž๊ฒฉ ์ข…๋ชฉ : ์ •๋ณด์ฒ˜๋ฆฌ๊ธฐ์‚ฌ ํ•„๊ธฐ (ํ•„๊ธฐ ์‹œํ—˜์„ ํ†ต๊ณผํ•ด์•ผ ์ •๋ณด์ฒ˜๋ฆฌ๊ธฐ์‚ฌ ์‹ค๊ธฐ ์‹œํ—˜์„ ๋ณด์‹ค ์ˆ˜ ์žˆ์–ด์š”!) ์‹œํ—˜ ์ ‘์ˆ˜ : http://www.q-net.or.kr ์‚ฌ์ดํŠธ๋ฅผ ํ†ตํ•ด ์‹ ์ฒญ ์‘์‹œ๋ฃŒ : 19400์› ์‹œํ—˜ ์น˜๋ฅธ ๋‚ ์งœ : 2019๋…„ 4์›” 27์ผ (ํ† ) ์‹œํ—˜ ์žฅ์†Œ : ์šฉ์‚ฐ๊ณต์—…๊ณ ๋“ฑํ•™๊ต (์„ ํƒ) ๊ณผ๋ชฉ : ๋ฐ์ดํ„ฐ๋ฒ ์ด์Šค ์ „์ž๊ณ„์‚ฐ๊ธฐ๊ตฌ์กฐ ์šด์˜์ฒด์ œ ์†Œํ”„ํŠธ์›จ์–ด๊ณตํ•™ ๋ฐ์ดํ„ฐํ†ต์‹  ๋ฌธ์ œ์ˆ˜ : 100๋ฌธ์ œ (๊ณผ๋ชฉ ๋‹น 20๋ฌธ์ œ) ํ•ฉ๊ฒฉ ๊ธฐ์ค€ : ํ‰๊ท  60์  ์ด์ƒ, ๊ณผ๋ฝ ๊ธฐ์ค€ : ๊ฐ ๊ณผ๋ชฉ 40์  ๋ฏธ๋งŒ ์ง์ ‘ ๊ณต๋ถ€ ํ›„ ์‹œํ—˜ ์นœ ํ›„๊ธฐ..! *์ €๋Š” 4๋…„์ œ ๋Œ€ํ•™๊ต ์ปด๊ณต๊ณผ์— ์žฌํ•™ ์ค‘์ž…๋‹ˆ๋‹ค* ์ผ๋‹จ ์ €๋Š” ์˜ฌํ•ด ์•ˆ์œผ๋กœ ์ •๋ณด์ฒ˜๋ฆฌ๊ธฐ์‚ฌ ์ž๊ฒฉ์ฆ์„ ๋”ฐ๋Š” ๊ฒƒ์ด ๋ชฉํ‘œ์˜€์–ด์š”! ์ฒ˜์Œ์— ์ž˜ ๋ชฐ๋ž์—ˆ์„ ๋•Œ ์ž์ฃผ ์žˆ๋Š” ์‹œํ—˜์ธ ์ค„ ์•Œ..

[์šด์˜์ฒด์ œ] ๋ฉ”๋ชจ๋ฆฌ ๊ตฌ์กฐ

๋ฉ”๋ชจ๋ฆฌ ๊ตฌ์กฐ : program์„ ์‹คํ–‰์‹œํ‚ค๋ฉด ์šด์˜์ฒด์ œ๋Š” ์šฐ๋ฆฌ๊ฐ€ ์‹คํ–‰์‹œํ‚จ program์„ ์œ„ํ•ด ๋ฉ”๋ชจ๋ฆฌ ๊ณต๊ฐ„์„ ํ• ๋‹นํ•ด์คŒ. ์ฆ‰ os๋Š” program์„ ์‹คํ–‰์‹œํ‚ค๊ธฐ ์œ„ํ•œ ๋ฉ”๋ชจ๋ฆฌ ๊ณต๊ฐ„์„ ์ œ๊ณต ํ• ๋‹น๋˜๋Š” ๋ฉ”๋ชจ๋ฆฌ ๊ณต๊ฐ„์€ stack, heap, data ์˜์—ญ์œผ๋กœ ๋‚˜๋ˆ ์ง ์ด๋Ÿฌํ•œ ๋ฉ”๋ชจ๋ฆฌ ๊ณต๊ฐ„์ด ์–ด๋– ํ•œ ์šฉ๋„๋กœ, ์–ธ์ œ, ์–ด๋””์„œ ํ• ๋‹น๋˜๋Š”๊ฐ€ ํ• ๋‹น ์‹œ๊ธฐ: ํ”„๋กœ๊ทธ๋žจ์ด ์‹คํ–‰๋ ๋•Œ๋งˆ๋‹ค ํ• ๋‹น ์žฅ์†Œ: main memory (RAM) ํ• ๋‹น ์šฉ๋„: program ์‹คํ–‰ ์‹œ ํ•„์š”ํ•œ ๋ฉ”๋ชจ๋ฆฌ ๊ณต๊ฐ„(์ง€์—ญ/์ „์—ญ๋ณ€์ˆ˜ ์„ ์–ธ์„ ์œ„ํ•ด) ํ• ๋‹น ๋ฐ์ดํ„ฐ ์˜์—ญ : ์ „์—ญ๋ณ€์ˆ˜์™€ static ๋ณ€์ˆ˜๊ฐ€ ํ• ๋‹น๋˜๋Š” ์˜์—ญ ํ”„๋กœ๊ทธ๋žจ์ด ์‹œ์ž‘๊ณผ ๋™์‹œ์— ํ• ๋‹น๋˜๊ณ  program์ด ์ข…๋ฃŒ๋˜๋ฉด ๋ฉ”๋ชจ๋ฆฌ์—์„œ ์†Œ๋ฉธ๋จ #include int a=10; // data ์˜์—ญ์— ํ• ๋‹น int b=20; // prog..

[์šด์˜์ฒด์ œ] process vs thread

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