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ishideo id:ishideo

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ishideo 2019/10/17
golang

go

sar

top

process

webapp

cpu

load

linux

os
ãƒªãƒ³ã‚¯
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osãƒ‘ãƒƒã‚±ãƒ¼ã‚¸ Goã§ãƒ•ã‚¡ã‚¤ãƒ«ã¸ã®å…¥å‡ºåŠ›ã‚’è¡Œã†ã«ã¯ã€osãƒ‘ãƒƒã‚±ãƒ¼ã‚¸ã‚’åˆ©ç”¨ã™ã‚‹ã®ãŒåŸºæœ¬ã§ã™ã€‚ ãƒ•ã‚¡ã‚¤ãƒ«ã‹ã‚‰ã®å…¥åŠ› ãƒ•ã‚¡ã‚¤ãƒ«ã‹ã‚‰ã®å…¥åŠ›ã‚’è¡Œã†ã«ã¯ã€Opené–¢æ•°ã§ãƒ•ã‚¡ã‚¤ãƒ«ã‚’ã‚ªãƒ¼ãƒ—ãƒ³ã—ã¦ã‹ã‚‰Readé–¢æ•°ã§byteé…åˆ—ã¸èªã¿è¾¼ã¿ã‚’è¡Œã„ã¾ã™ã€‚ ä»¥ä¸‹ã®ã‚³ãƒ¼ãƒ‰ã¯ãƒ•ã‚¡ã‚¤ãƒ«ã®å†…å®¹ã‚’æ¨™æº–å‡ºåŠ›ã™ã‚‹ãƒ—ãƒã‚°ãƒ©ãƒ ã®ä¸€ä¾‹ã§ã™ã€‚ package main import ( "fmt" "os" ) const BUFSIZE = 1024 // èªã¿è¾¼ã¿ãƒãƒƒãƒ•ã‚¡ã®ã‚µã‚¤ã‚º func main() { file, err := os.Open(`/path/to/file`) if err != nil { // Openã‚¨ãƒ©ãƒ¼å‡¦ç† } defer file.Close() buf := make([]byte, BUFSIZE) for { n, err := file.Read(buf) if n == 0 { break
ishideo 2016/08/02
[io/ioutil][bufio]

go

golang

file

in

out

os
ãƒªãƒ³ã‚¯
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