์ „์ฒด ๊ธ€

์ „์ฒด ๊ธ€

    Script - ์—ฐ์‚ฐ

    1. bash ์—ฐ์‚ฐ - ๊ด„ํ˜ธ๋ฅผ ์ด์šฉ a=1 b=10 c=$((a+b)) c=$[a+b] echo $c #11 2. let ๋ช…๋ น์–ด a=1 b=10 let c=$a+$b echo $c #11 3. expr ๋ช…๋ น์–ด - ์ˆซ์ž์™€ ์—ฐ์‚ฐ์ž ์‚ฌ์ด ๋„์›Œ์จ์•ผ ํ•จ a=1 b=10 expr $a + $b #11 4. awk ๋ช…๋ น์–ด - ์†Œ์ˆ˜์  ๊ณ„์‚ฐ ๊ฐ€๋Šฅ - ํŒŒ์ดํ”„ ์ „๋‹ฌ ๊ณผ์ • ํ•„์š” a=1 b=10 echo $a $b | awk '{print $1+$2}' #11 echo $a $b | awk '{print $1/$2}' #0.75 5. bc ๋ช…๋ น์–ด - ๋ฆฌ๋ˆ…์Šค bc๊ฐ€ ์„ค์น˜๋˜์–ด์•ผ ํ•จ - ์†Œ์ˆ˜์  ๊ณ„์‚ฐ ๊ฐ€๋Šฅ - ํŒŒ์ดํ”„ ์ „๋‹ฌ ๊ณผ์ • ํ•„์š” a=1 b=10 echo "$a+$b" | bc #11

    Script - ์—ฐ์‚ฐ์ž

    1. ์ˆซ์ž ๋น„๊ต ์—ฐ์‚ฐ์ž -lt : ๋ฏธ๋งŒ() ex) if["$a" -gt "$b"] ex) (("$a" > "$b")) -le : ์ดํ•˜(= "$b")) -eq : ๊ฐ™์Œ ex) if["$a" -eq "$b"] -ne : ๊ฐ™์ง€์•Š์Œ ex) if["$a" -ne "$b"] 2. ๋ฌธ์ž์—ด ๋น„๊ต ์—ฐ์‚ฐ์ž =, == : ๊ฐ™์Œ ex) if["$a" = "$b"] ex) if["$a" == "$b"] != : ๊ฐ™์ง€์•Š์Œ ex) if["$a" != "$b"] -z : ๋ฌธ์ž์—ด์ด null์ž„(๊ธธ์ด๊ฐ€ 0์ž„) ex) if[-z "$a"] -n : ๋ฌธ์ž์—ด์ด null์ด ์•„๋‹˜(๊ธธ์ด๊ฐ€ 0์ด ์•„๋‹˜) ex) if[-n "$a"] > : ASCII๊ฐ’์ด ๋ณด๋‹ค ํผ ex) if[["$a" > "$b"]] ex) if["$a" \> "$b"] < : ASC..

    Script - ์„ ์–ธ ๋ฐ ์‚ฌ์šฉ

    1. Shell Script - ๋ฆฌ๋ˆ…์Šค ์„œ๋ฒ„ ์ž๋™ํ™”๋ฅผ ์œ„ํ•ด ํ•„์š”ํ•จ - ๊ธฐ๋ณธ์ ์ธ ๋ฆฌ๋ˆ…์Šค ๋ช…๋ น์–ด์—์„œ ๋ช‡ ๊ฐ€์ง€ ๋ฌธ๋ฒ•์ด ์ถ”๊ฐ€ - ํŒŒ์ผ(.sh)๋กœ ์ €์žฅ ํ›„ ์‹คํ–‰ - ํŒŒ์ผ ๋งจ ์œ„์— ์ค„์— #! /bin/bash ์ •์˜ ํ›„ ์ž‘์„ฑ 2. ์ฃผ์„ ์ฒ˜๋ฆฌ - #์œผ๋กœ ์‹œ์ž‘ํ•˜๋Š” ๋ผ์ธ ์ฃผ์„ ์ฒ˜๋ฆฌ ๋จ - ์˜ˆ) # ์ฃผ์„์ž…๋‹ˆ๋‹ค. 3. ๋ณ€์ˆ˜ ์„ ์–ธ ๋ฐ ์‚ฌ์šฉ - ๋ณ€์ˆ˜=data ํ˜•ํƒœ๋กœ ์„ ์–ธ - ๊ธฐ๋ณธ ๋ฌธ์ž์—ด๋กœ ์ธ์‹ - " ", ' ' ๋Š” ๋‹จ์ˆœ ๊ทธ๋ฃน ์ง€์ •(' '๊ฐ€ ๋” ๊ฐ•๋ ฅ) - ์˜ˆ) test=1 - ์˜ˆ) test=hello - $๋ณ€์ˆ˜๋กœ ์‚ฌ์šฉ - ์˜ˆ) echo $test 4. ๋ฆฌ์ŠคํŠธ(๋ฐฐ์—ด) ์„ ์–ธ ๋ฐ ์‚ฌ์šฉ - ๋ณ€์ˆ˜=(data1 data2 data3) ํ˜•ํƒœ๋กœ ์„ ์–ธ - ์˜ˆ) test=(apple banana melon) - ${๋ณ€์ˆ˜[ ]}๋กœ ์‚ฌ์šฉ - ์˜ˆ) $..

    URI, URL, URN

    1. URI Uniform Resource Identifier ํ†ตํ•ฉ ์ž์› ์‹๋ณ„์ž๋กœ URL๊ณผ URN ํ˜•ํƒœ๊ฐ€ ์žˆ์Œ 2. URL Uniform Resource Locator ์›น ์„œ๋ฒ„์— ํ•„์š”ํ•œ ๋ฆฌ์†Œ์Šค์˜ ์œ„์น˜๋ฅผ ๋‚˜ํƒ€๋ƒ„ 3. URN Uniform Resource Name ์›น ์„œ๋ฒ„์— ํ•„์š”ํ•œ ๋ฆฌ์†Œ์Šค์˜ ์ด๋ฆ„์„ ๋‚˜ํƒ€๋ƒ„ 4. ํ‘œ๊ธฐ ๋ฐฉ๋ฒ• Protocol : ํ†ต์‹  ํ”„๋กœํ† ์ฝœ Subdomain(Host) : ์„œ๋ฒ„ ์ด๋ฆ„ Domain Name : ๋„๋ฉ”์ธ ๋„ค์ž„ TLD : ํƒ‘ ๋„๋ฉ”์ธ ๋„ค์ž„ Port : ์—ฐ๊ฒฐ ํฌํŠธ Path : ํŒŒ์ผ ๊ฒฝ๋กœ File Name : ํŒŒ์ผ ์ด๋ฆ„ Parameters(Query) : Request GET ์ •๋ณด

    HTTP Method(GET/POST)

    1. GET ์„œ๋ฒ„์ธก์— ์ •๋ณด ์š”์ฒญ ์š”์ฒญํ•˜๋Š” data๊ฐ€ url ๋’ค์— ๋ถ™์Œ data๋ฅผ ํŒŒ๋ผ๋ฏธํ„ฐ๋ผ๊ณ  ํ•˜์—ฌ url ๋’ค '?', '&'๋ฅผ ์‚ฌ์šฉํ•˜์—ฌ ๋‚˜ํƒ€๋ƒ„ data์— ์ œํ•œ์ด ์žˆ์Œ ์ง€์›ํ•˜์ง€ ์•Š๋Š” ์–ธ์–ด๋Š” url encoding์„ ๋”ฐ๋ผ์•ผ ํ•จ ์ƒ๋Œ€์ ์œผ๋กœ ๋น ๋ฆ„ GET์ด ๋™์ž‘ํ•จ์œผ๋กœ์จ ์›น ์„œ๋ฒ„์—์„œ ๋‹จ์ˆœ data๋ฅผ ๊ฐ€์ง€๊ณ  ์˜ด ์บ์‹ฑ ๊ฐ€๋Šฅ ex) ๊ฒ€์ƒ‰์‹œ https://search.naver.com/search.naver?sm=top_hty&fbm=1&ie=utf8&query=get+post+%EC%B0%A8%EC%9D%B4 > ๋„ค์ด๋ฒ„์—์„œ 'get post ์ฐจ์ด'๋ฅผ ๊ฒ€์ƒ‰ํ•ด url์ด ๋ฐ”๋€œ 2. POST ์„œ๋ฒ„์ธก์— ์ •๋ณด๋ฅผ ์ƒ์„ฑํ•˜์—ฌ ์ „๋‹ฌ ์š”์ฒญํ•˜๋Š” data๊ฐ€ body์— ํฌํ•จ data์— ์ œํ•œ์ด ์—†์Œ message encoding์„ ๋”ฐ๋ผ์•ผ ํ•จ ti..

    HTTP Header

    1. ๊ณตํ†ต Data : HTTP Message๊ฐ€ ๋งŒ๋“ค์–ด์ง„ ์‹œ๊ฐ„ Pragma : ์บ์‹œ ์ œ์–ด(HTTP/1.0) Cache-Control : ์ฃผ๋กœ Response์—์„œ ์‚ฌ์šฉ๋˜๋ฉฐ ์บ์‹œ ์ œ์–ด(HTTP/1.1) - no-store : ์•„๋ฌด๊ฒƒ๋„ ์บ์‹œํ•˜์ง€ ์•Š์Œ - no-cache : ๋ชจ๋“  ์บ์‹œ๋ฅผ ์“ฐ๊ธฐ ์ „์— ์„œ๋ฒ„์— ํ•ด๋‹น ์บ์‹œ๋ฅผ ์‚ฌ์šฉํ•ด๋„ ๋˜๋Š”์ง€ ํ™•์ธ - no-transform : ์‘๋‹ต์— ๋Œ€ํ•œ ๋ณ€ํ˜„์ด๋‚˜ ๋ณ€ํ™˜์„ ํ—ˆ์šฉํ•˜์ง€ ์•Š์Œ - only-if-cached : ๋ฌด์กฐ๊ฑด ์บ์‹œ๋ฅผ ์‚ฌ์šฉ - must-revalidate : ๋งŒ๋ฃŒ๋œ ์บ์‹œ๋งŒ ์„œ๋ฒ„์—์„œ ํ™•์ธ์„ ๋ฐ›๋„๋ก ํ•จ - proxy-revalidate : must-revalidate์™€ ๋™์ผํ•˜์ง€๋งŒ ๊ณต์œ  ์บ์‹œ์—๋งŒ ์ ์šฉ - public : ๊ณต์œ  ์บ์‹œ(๋˜๋Š” ์ค‘๊ฐœ ์„œ๋ฒ„)์— ์ €์žฅํ•ด๋„ ๋œ๋‹ค๋Š” ๊ฒƒ์„ ์˜๋ฏธ ..

    HTTP Response Code

    1. 1xx(์กฐ๊ฑด๋ถ€ ์‘๋‹ต, Request ์ฒ˜๋ฆฌ ์ค‘) 100(Continue, ๊ณ„์†): ์š”์ฒญ์ž๋Š” ์š”์ฒญ์„ ๊ณ„์†ํ•ด์•ผ ํ•œ๋‹ค. ์„œ๋ฒ„๋Š” ์ด ์ฝ”๋“œ๋ฅผ ์ œ๊ณตํ•˜์—ฌ ์š”์ฒญ์˜ ์ฒซ ๋ฒˆ์งธ ๋ถ€๋ถ„์„ ๋ฐ›์•˜์œผ๋ฉฐ ๋‚˜๋จธ์ง€๋ฅผ ๊ธฐ๋‹ค๋ฆฌ๊ณ  ์žˆ์Œ์„ ๋‚˜ํƒ€๋‚ธ๋‹ค. 101(Swithching Protocols, ํ”„๋กœํ† ์ฝœ ์ „ํ™˜): ์š”์ฒญ์ž๊ฐ€ ์„œ๋ฒ„์— ํ”„๋กœํ† ์ฝœ ์ „ํ™˜์„ ์š”์ฒญํ–ˆ์œผ๋ฉฐ ์„œ๋ฒ„๋Š” ์ด๋ฅผ ์Šน์ธํ•˜๋Š” ์ค‘์ด๋‹ค. 102(Processing, ์ฒ˜๋ฆฌ, RFC 2518) 2. 2xx(์„ฑ๊ณต, Request ์ฒ˜๋ฆฌ ์™„๋ฃŒ) 200(OK, ์„ฑ๊ณต): ์„œ๋ฒ„๊ฐ€ ์š”์ฒญ์„ ์ œ๋Œ€๋กœ ์ฒ˜๋ฆฌํ–ˆ๋‹ค๋Š” ๋œป์ด๋‹ค. ์ด๋Š” ์ฃผ๋กœ ์„œ๋ฒ„๊ฐ€ ์š”์ฒญํ•œ ํŽ˜์ด์ง€๋ฅผ ์ œ๊ณตํ–ˆ๋‹ค๋Š” ์˜๋ฏธ๋กœ ์“ฐ์ธ๋‹ค. 201(Created, ์ž‘์„ฑ๋จ): ์„ฑ๊ณต์ ์œผ๋กœ ์š”์ฒญ๋˜์—ˆ์œผ๋ฉฐ ์„œ๋ฒ„๊ฐ€ ์ƒˆ ๋ฆฌ์†Œ์Šค๋ฅผ ์ž‘์„ฑํ–ˆ๋‹ค. 202(Accepted, ํ—ˆ์šฉ๋จ): ์„œ๋ฒ„๊ฐ€ ์š”์ฒญ์„..

    HTTP Message

    1. HTTP - TCP/UDP ๊ธฐ๋ฐ˜์œผ๋กœ ์›น์—์„œ ์‚ฌ์šฉํ•˜๋Š” ํ”„๋กœํ† ์ฝœ 2. Message - Request Message : ์›น ํด๋ผ์ด์–ธํŠธ > ์›น ์„œ๋ฒ„ (์‚ฌ์šฉ์ž์˜ ๋ชฉ์ ์— ๋”ฐ๋ผ 9๊ฐœ์˜ Methods๋ฅผ ์‚ฌ์šฉ) - Respose Message : ์›น ํด๋ผ์ด์–ธํŠธ < ์›น ์„œ๋ฒ„ - Message ๊ตฌ์„ฑ ํ˜•ํƒœ : Request/Response Line + Header + Blank Line + Body 1. Request/Response Line - Request : Request Method + Request URI + HTTP Version - Response : HTTP Version + Response Code + Response Message 2. Header - Request : Host, Accept, Acc..

    html Tag

    web์—์„œ ๊ฐ€์žฅ ๋งŽ์ด ์‚ฌ์šฉํ•˜๋Š” html Tag๋ฅผ ์ˆœ์„œ๋Œ€๋กœ ํ™•์ธ ๊ฐ€๋Šฅํ•œ ์‚ฌ์ดํŠธ : https://www.advancedwebranking.com/html/ The average web page from top twenty Google results Apparently, an average web page uses twenty-eight different element types: The twenty-eight elements used on most pages, ordered by appearance frequency: www.advancedwebranking.com html Tag ์ •์˜๋ฅผ ์นดํ…Œ๊ณ ๋ฆฌ, ์•ŒํŒŒ๋ฒณ ์ˆœ์„œ๋Œ€๋กœ ํ™•์ธ ๊ฐ€๋Šฅํ•œ ์‚ฌ์ดํŠธ : https://www.w3schools.com/tags/default..

    1. ์‰˜์ด๋ž€ ๋ฌด์—‡์ธ๊ฐ€?

    Shell - ํ‚ค๋ณด๋“œ๋กœ ์ž…๋ ฅํ•œ ๋ช…๋ น์–ด๊ฐ€ ์šด์˜์ฒด์ œ ์ „๋‹ฌํ•˜์—ฌ ๋ช…๋ น์–ด๊ฐ€ ์‹คํ–‰๋  ์ˆ˜ ์žˆ๋„๋ก ํ•ด์ฃผ๋Š” ํ”„๋กœ๊ทธ๋žจ Shell ์ข…๋ฅ˜ - Bash Shell : ์ตœ์ดˆ์˜ ์œ ๋‹‰์Šค Shell์ธ Bourne Shell๊ณผ ํ˜ธํ™˜๋˜๋„๋ก ๋งŒ๋“ค์–ด์ง„ Shell - csh(C Shell) : BSD ๊ณ„์—ด ์œ ๋‹‰์Šค ์‚ฌ์šฉ์ž๋“ค์ด ์„ ํ˜ธํ•˜๋Š” Shell - ksh(Korn Shell) : ์œ ๋‹‰์Šค ์‹œ์Šคํ…œ V ๊ณ„์—ด ์‚ฌ์šฉ์ž๋“ค์ด ์„ ํ˜ธํ•˜๋Š” Shell - tccsh : C Shell๊ณผ ํ˜ธํ™˜๋˜๋Š” Shell - ash : Borune Shell๊ณผ ํ˜ธํ™˜๋˜๋Š” Shell ํ„ฐ๋ฏธ๋„ ์—๋ฎฌ๋ ˆ์ดํ„ฐ - GUI ํ™˜๊ฒฝ์—์„œ Shell๊ณผ ์ง์ ‘ ์ž‘์—…ํ•  ์ˆ˜ ์žˆ๋„๋ก ๋„์™€์ฃผ๋Š” ํ”„๋กœ๊ทธ๋žจ - ํ”ํžˆ ํ„ฐ๋ฏธ๋„์ด๋ผ๊ณ  ๋ถ€๋ฆ„ ์ผ๋ฐ˜ ์œ ์ € [eunhye@computer ~ ]$ ์Šˆํผ ์œ ์ € - ๋ฃจํŠธ(root) or ..

    AWS Module3

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    AWS Module2

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    ์˜คํ”ˆ ์†Œ์Šค์˜ ์กฐ๊ฑด Free Redistribution Souce Code Derived Works Integrity of The Author's Source Code No Discrimination Against Persons or Groups No Discrimination Against Fields of Endeavor Distribution of License License Must Not Be Specific to a Product License Must Not Restrict Other Software License Must Be Technology-Neutral GPL ๋ผ์ด์„ ์Šค(General Public License) ํ•ด๋‹น ๋ผ์ด์„ ์Šค๋ฅผ ์ด์šฉํ•ด SW๋ฅผ ๊ฐœ๋Ÿ‰/๊ฐœ๋ฐœํ•  ๊ฒฝ์šฐ ํ•ด๋‹น SW์˜ ์†Œ์Šค ์ฝ”๋“œ๋„ ..