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linuxã«é–¢ã™ã‚‹yamkazuã®ãƒ–ãƒƒã‚¯ãƒžãƒ¼ã‚¯ (67)

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æœ¬ã®è™«: è¨˜éŒ²ã‹ã‚‰ã¿ã‚‹Linus Torvalsã®C++è¦³
On Wed, 5 Sep 2007, Dmitry Kakurin wrote: > > Gitã®ã‚½ãƒ¼ã‚¹ã‚³ãƒ¼ãƒ‰ã‚’å§‹ã‚ã¦ã¿ãŸæ™‚ã€2ã¤ã®ã“ã¨ãŒé ã«ã²ã£ã‹ã‹ã£ãŸã€‚ > 1. C++ã˜ã‚ƒãªãã¦ç´”ç²‹ãªCã€‚ç†ç”±ã¯ä¸æ˜Žã€‚ç§»æ¤æ€§ã¨ã‹è¨€ã‚ãªã„ã§ã‚ˆã€‚ > ã‚¯ã‚½ã ã€‚ ã‚¯ã‚½ã¾ã¿ã‚Œãªã®ã¯ã‚ªãƒ¡ãƒ¼ã®æ–¹ã ã€‚ C++ã¯æ‚²æƒ¨ãªè¨€èªžã ã€‚ã—ã‹ã‚‚ã€å°‘ãªã‹ã‚‰ã¬æ•°ã®ãƒ—ãƒã‚°ãƒ©ãƒžãƒ¼ãŒä½¿ã£ã¦ã„ã¦ã€å®Œå…¨ç„¡æ¬ ã®ã©ã†ã—ã‚ˆã†ã‚‚ãªã„ã‚¯ã‚½ã‚’ç”Ÿæˆã™ã‚‹ã®ãŒã‚ã¡ã‚ƒã‚ã¡ã‚ƒç°¡å˜ã«ãªã£ã¦ã„ã‚‹ã¨ã„ã†ç‚¹ã§ã€ã‚ˆã‘ã„ã«æ‚²æƒ¨ã ã€‚ãƒžã‚¸ã§ã€Cã‚’é¸æŠžã™ã‚‹ç†ç”±ãŒã€Œä½•ã‚‚ãªã‹ã£ãŸã€ã¨ã—ã¦ã‚‚ã ã€C++ãƒ—ãƒã‚°ãƒ©ãƒžãƒ¼é¿ã‘ã«ãªã‚‹ã¨ã„ã†ã ã‘ã§ã€Cã‚’ä½¿ã†å¤§ç¾©ååˆ†ã«ãªã‚‹ã€‚ ã¤ã¾ã‚Šã ï¼šCã®é¸æŠžã¯å”¯ä¸€ã®ã¾ã¨ã‚‚ãªé¸æŠžãªã‚“ã ã‚ˆã€‚Miles BaderãŒãµã–ã‘ã¦ã€ã€Œã„ã‚„ãŒã‚‰ã›ã«ã‚ˆã‚‹è¿½ã„è¿”ã—ç›®çš„ã€ãªã‚“ã¦ã„ã£ã¦ãŸãŒã€å®Ÿéš›ã®ã¨ã“ã‚æ£ã—ã„ã€‚ä¿ºã®å‡ºã—ãŸçµè«–ã§ã¯ã€ãƒ—ãƒã‚¸ã‚§ã‚¯ãƒˆã«Cã‚ˆã‚ŠC++ã‚’ä½¿ã„ãŸãŒã‚‹ãƒ—ãƒã‚°ãƒ©ãƒžãƒ¼ã¯ã€ã‚€
yamkazu 2013/05/18
linux
ãƒªãƒ³ã‚¯
ã‚·ã‚§ãƒ«ã‚¹ã‚¯ãƒªãƒ—ãƒˆã§ã€Œãƒ“ãƒ«ãƒ‰ã‚¹ã‚¯ãƒªãƒ—ãƒˆã€ã‚’ä½œã‚‹æ™‚ã«ä¾¿åˆ©ãªãƒ†ã‚¯ãƒ‹ãƒƒã‚¯ - ã‚¯ã‚¯ãƒã‚°(2012-10-11)
ãƒ—ãƒã‚°ãƒ©ãƒ ã®ç¨®é¡žã«ã‚ˆã£ã¦ã¯ã€ãã®ã¾ã¾å®Ÿè¡Œã§ãã‚‹ã‚‚ã®ã¨ã€å®Ÿè¡Œã§ãã‚‹ã‚ˆã†ã«ã™ã‚‹ãŸã‚ã«ã€Œãƒ“ãƒ«ãƒ‰ã€ãŒå¿…è¦ãªã‚‚ã®ã¨ãŒã‚ã‚Šã¾ã™ã€‚Cãªã©ã®ã‚³ãƒ³ãƒ‘ã‚¤ãƒ«ãŒå¿…è¦ãªè¨€èªžã§æ›¸ã‹ã‚ŒãŸãƒ—ãƒã‚°ãƒ©ãƒ ã¯å½“ç„¶ãƒ“ãƒ«ãƒ‰ãŒå¿…è¦ã§ã™ã—ã€ã‚³ãƒ³ãƒ‘ã‚¤ãƒ«ãŒä¸è¦ãªè¨€èªžã§ã‚ã£ã¦ã‚‚ã€ã‚¤ãƒ³ã‚¹ãƒˆãƒ¼ãƒ©ãƒ‘ãƒƒã‚±ãƒ¼ã‚¸ã‚’ä½œã‚‹ã¨ã„ã†ãƒ“ãƒ«ãƒ‰ä½œæ¥ãŒå¿…è¦ãªå ´åˆã¯ã‚ã‚Šã¾ã™ã€‚ ãƒ“ãƒ«ãƒ‰ä½œæ¥ã®è‡ªå‹•åŒ–ã®ãŸã‚ã®ãƒ„ãƒ¼ãƒ«ã¨ã—ã¦makeãªã©ãŒã‚ã‚Šã¾ã™ãŒã€ãã“ã¾ã§æœ¬æ ¼çš„ãªäº‹ã‚’ã‚„ã‚‹å¿…è¦ãŒãªã„å ´åˆã¯ã€ã‚·ã‚§ãƒ«ã‚¹ã‚¯ãƒªãƒ—ãƒˆã§ã€Œãƒ“ãƒ«ãƒ‰ã‚¹ã‚¯ãƒªãƒ—ãƒˆã€ã‚’ä½œã‚‹ã®ãŒæ‰‹è»½ã§ãŠã™ã™ã‚ã§ã™ã€‚ã“ã®è¨˜äº‹ã§ã¯ã€ãã®ã‚ˆã†ãªå ´åˆã«å½¹ç«‹ã¤ã‚·ã‚§ãƒ«ã‚¹ã‚¯ãƒªãƒ—ãƒˆã®ãƒ†ã‚¯ãƒ‹ãƒƒã‚¯ã‚’4ã¤ã”ç´¹ä»‹ã—ã¾ã™ã€‚ ã‚¨ãƒ©ãƒ¼ã®æ°—ä»˜ãã‚„ã™ã•ã¨ãƒ‡ãƒãƒƒã‚°ã®ã—ã‚„ã™ã•ã‚’é«˜ã‚ã‚‹ ãƒ¡ãƒƒã‚»ãƒ¼ã‚¸ã«è‰²ã‚’ä»˜ã‘ã‚‹ ã‚·ã‚§ãƒ«é–¢æ•°ã‚’ãƒ©ã‚¤ãƒ–ãƒ©ãƒªã«ã™ã‚‹ ä¸€æ™‚çš„ã«ä½œæ¥ãƒ‡ã‚£ãƒ¬ã‚¯ãƒˆãƒªã®ä¸ã«å…¥ã‚‹ ã‚¨ãƒ©ãƒ¼ã®æ°—ä»˜ãã‚„ã™ã•ã¨ãƒ‡ãƒãƒƒã‚°ã®ã—ã‚„ã™ã•ã‚’é«˜ã‚ã‚‹ ã¯ã˜ã‚ã«ç´¹ä»‹ã™ã‚‹ãƒ†ã‚¯ãƒ‹ãƒƒã‚¯ã¯å•é¡ŒãŒç™ºç”Ÿã—ãŸæ™‚ã«æ°—ã¥ãã‚„
yamkazu 2012/10/16
sh

linux
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30äººã®Linuxã‚«ãƒ¼ãƒãƒ«é–‹ç™ºè€…ï¼šGreg Kroah-Hartman
30é€±ã«æ¸¡ã‚Šå¤šå½©ãª Linux ã‚«ãƒ¼ãƒãƒ«é–‹ç™ºè€…ã‚’ç´¹ä»‹ã—ã¦ã„ãã‚·ãƒªãƒ¼ã‚ºã®ç¬¬5å¼¾ã¯ã€Linux ã‚¹ãƒ†ãƒ¼ãƒ–ãƒ« (å®‰å®šç‰ˆ) ã‚«ãƒ¼ãƒãƒ«ã®ãƒ¡ãƒ³ãƒ†ãƒŠãƒ¼ã§ã€Linux FoundationÂ ãƒ•ã‚§ãƒãƒ¼ã§ã‚‚ã‚ã‚‹Â Greg Kroah-HartmanÂ ã§ã™ã€‚ ã“ã‚Œã¾ã§ã«ç´¹ä»‹ã—ãŸé–‹ç™ºè€…ã®ãƒ—ãƒãƒ•ã‚£ãƒ¼ãƒ«ã¯ã€ã“ã¡ã‚‰ã«æŽ²è¼‰ã•ã‚Œã¦ã„ã¾ã™ã€‚ ãŠåå‰ã‚’ãŠé¡˜ã„ã—ã¾ã™ã€‚ Greg Kroah-Hartman ã§ã™ã€‚ã‚‚ã£ã±ã‚‰ Greg K-H ã¨ã—ã¦çŸ¥ã‚‰ã‚Œã¦ã„ã¾ã™ã€‚ç™ºéŸ³ã§ããªã„ã‹ã‚‰ã§ã—ã‚‡ã†ãã€‚ Linuxã‚³ãƒŸãƒ¥ãƒ‹ãƒ†ã‚£ã§ã®ã‚ãªãŸã®å½¹å‰²ã‚„ã€æ‹…å½“ã®ã‚µãƒ–ã‚·ã‚¹ãƒ†ãƒ ã«ã¤ã„ã¦æ•™ãˆã¦ãã ã•ã„ã€‚ ç§ã¯ Linux ã‚«ãƒ¼ãƒãƒ«ã® ã‚¹ãƒ†ãƒ¼ãƒ–ãƒ« ã‚«ãƒ¼ãƒãƒ« ãƒªãƒªãƒ¼ã‚¹ã‚’ç®¡ç†ã—ã¦ã„ã¾ã™ã€‚ã¾ãŸã€USBã€ãƒ‰ãƒ©ã‚¤ãƒãƒ¼ ã‚³ã‚¢ã€ã‚¹ãƒ†ãƒ¼ã‚¸ãƒ³ã‚° ãƒ‰ãƒ©ã‚¤ãƒãƒ¼ã€ã‚·ãƒªã‚¢ãƒ«ã€ttyã€charã€ãã®ä»–ãƒžã‚¤ãƒŠãƒ¼ãªãƒ‰ãƒ©ã‚¤ãƒãƒ¼ã®ã‚µãƒ–ã‚·ã‚¹ãƒ†ãƒ ãƒ¡ãƒ³ãƒ†ãƒŠãƒ¼ã§ã‚‚ã‚ã‚Šã¾ã™ã€‚ å ±é…¬ã¯ã©ã“ã‹ã‚‰å¾—ã¦ã„ã¾ã™ã‹
yamkazu 2012/08/06
linux
ãƒªãƒ³ã‚¯
cron ã§ > /dev/null ã—ã¦æ¤…åã‚’æŠ•ã’ã‚‰ã‚Œãªã„ãŸã‚ã®3ã¤ã®æ–¹æ³• - é…’æ—¥è¨˜ ã¯ã¦ãªæ”¯åº—
(ã‚¿ã‚¤ãƒˆãƒ«ã¯é‡£ã‚Šã§ã™) ã„ã„åŠ æ¸›ã€>/dev/null 2>&1ã¨æ›¸ãã®ã‚’ã‚„ã‚ãŸã‚‰ã©ã†ã‹ - DQNEOèµ·æ¥æ—¥è¨˜ ã“ã®è¨˜äº‹ã®ã‚¿ã‚¤ãƒˆãƒ«ãŒ twitter ã§æµã‚Œã¦ããŸã®ã‚’è¦‹ã¦ã€ã€Œãã†ã ï¼å‡ºåŠ›ã‚’ /dev/null ã«æ¨ã¦ã‚‹ãªã‚“ã¦ã¨ã‚“ã§ã‚‚ãªã„ã‚ˆãï¼ã€ã¨æ€ã£ã¦ã‚ˆãèªã‚“ã ã‚‰ /dev/null ã«é–“é•ã„ãªãæ¨ã¦ã‚‹æ–¹æ³•ã ã£ãŸã®ã§ã¤ã„ crontabã« > /dev/null æ›¸ã„ãŸã‚‰æ¤…åæŠ•ã’ã‚‹ 2012-06-13 00:01:17 via YoruFukurou ã¨ã¤ã¶ã‚„ã„ã¦ã—ã¾ã£ãŸã®ã§ã™ãŒã€ã§ã¯å‡ºåŠ›ã‚’æ¨ã¦ãªã„ãŸã‚ã«ã¯ã©ã†ã™ã‚Œã°ã„ã„ã®ã‹ã€‚ç¾æ™‚ç‚¹ã§ã®å€‹äººçš„ãƒ™ã‚¹ãƒˆãƒ—ãƒ©ã‚¯ãƒ†ã‚£ã‚¹ã‚’æ›¸ãç•™ã‚ã¦ãŠãã¾ã™ã€‚ ãƒ‡ãƒ•ã‚©ãƒ«ãƒˆ : ãƒ¡ãƒ¼ãƒ«ã§é€ã‚‹ (MAILTO) ã›ã£ã‹ã cron daemon ãŒãƒã‚°ã‚’æ¨ã¦ãªã„ãŸã‚ã«ã‚ã–ã‚ã–ãƒ¡ãƒ¼ãƒ«ã§é€ã£ã¦ãã‚Œã‚‹ã®ã«ã€ãã‚Œã‚’ > /dev/null ã§è¸ã¿ã«ã˜ã‚‹ã¨ã¯ã²ã©ã„ã€‚ ã¨ã¯ã„ãˆã€
yamkazu 2012/06/13
linux
ãƒªãƒ³ã‚¯
https://jp.techcrunch.com/2012/04/20/20120419an-interview-with-millenium-technology-prize-finalist-linus-torvalds/
yamkazu 2012/04/22
ã¨ã¦ã‚‚é¢ç™½ã„ã‚¤ãƒ³ã‚¿ãƒ“ãƒ¥ãƒ¼

linux
ãƒªãƒ³ã‚¯
https://jp.techcrunch.com/2012/02/24/20120223with-many-eyeballs-all-bugs-are-shallow/
yamkazu 2012/03/09
linux
ãƒªãƒ³ã‚¯
OpenJDKï¼‹SystemTapã§ãƒˆãƒ©ãƒ–ãƒ«è§£æžã¯ã“ã“ã¾ã§ã§ãã‚‹ï¼
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yamkazu 2011/09/23
java

linux
ãƒªãƒ³ã‚¯
C10Kå•é¡Œ â€“ å¯ºç”°ã€€ä½³å¤® â€“ Yoshio Terada
Grizzlyã®æ¦‚è¦ : C10Kå•é¡Œã«å¯¾å¿œã™ã‚‹GlassFish(Grizzly) ã•ã¦ã€ãŠã¾ãŸã›è‡´ã—ã¾ã—ãŸã€‚ æœ¬æ—¥ã‚ˆã‚Šã€JJUGã§ç™ºè¡¨ã—ãŸGrizzlyã«ã¤ã„ã¦ç´¹ä»‹ã—ãŸã„ã¨æ€ã„ã¾ã™ã€‚ ã¾ãšã€Grizzlyã£ã¦èžã„ãŸã“ã¨ã‚ã‚Šã¾ã™ã‹ï¼Ÿ ã€ŒGrizzlyã¯GlassFishã‚³ãƒŸãƒ¥ãƒ‹ãƒ†ã‚£ã®ä¸ã®ã‚µãƒ–ãƒ—ãƒã‚¸ã‚§ã‚¯ãƒˆã®ï¼‘ã¤ã§ Javaã®New I/Oã‚’ä½¿ã£ã¦è¨˜è¿°ã•ã‚ŒãŸæ±Žç”¨çš„ãªãƒãƒƒãƒˆãƒ¯ãƒ¼ã‚¯ã‚µãƒ¼ãƒã‚¨ãƒ³ã‚¸ãƒ³ã§ã™ã€‚ã€ Project Grizzly : https://grizzly.dev.java.net/ Project Grizzlyã«ã‚ˆã£ã¦é–‹ç™ºã•ã‚ŒãŸæˆæžœç‰©ï¼ˆãƒãƒƒãƒˆãƒ¯ãƒ¼ã‚¯ã‚µãƒ¼ãƒã‚¨ãƒ³ã‚¸ãƒ³ï¼‰ã¯ GlassFishã¨ã¯ç‹¬ç«‹ã—ã¦å˜ä½“ã§ä½¿ç”¨ã™ã‚‹ã“ã¨ãŒã§ãã¾ã™ã€‚ã¾ãŸã€Grizzlyã¯ç‹¬è‡ªã®é€²åŒ–ã‚’é‚ã’ã¦ã„ã£ã¦ã„ã¾ã™ã€‚ç¾åœ¨ã€Grizzlyã®æœ€æ–°ãƒãƒ¼ã‚¸ãƒ§ãƒ³ã¯1.7.3.1ã§ã™ã€‚ ä»Šå›žç´¹ä»‹ã™ã‚‹Grizzlyã¯å°‘ã—ãƒãƒ¼ã‚¸ãƒ§
yamkazu 2011/09/06
c10k

linux
ãƒªãƒ³ã‚¯
TheC10kProblem - ã€ŒC10Kå•é¡Œã€ï¼ˆã‚¯ãƒ©ã‚¤ã‚¢ãƒ³ãƒˆ1ä¸‡å°å•é¡Œï¼‰ã¨ã¯ã€ãƒãƒ¼ãƒ‰ã‚¦ã‚§ã‚¢ã®æ€§èƒ½ä¸Šã¯å•é¡ŒãŒãªãã¦ã‚‚ã€ã‚ã¾ã‚Šã«ã‚‚ã‚¯ãƒ©ã‚¤ã‚¢ãƒ³ãƒˆã®æ•°ãŒå¤šããªã‚‹ã¨ã‚µãƒ¼ãƒãŒãƒ‘ãƒ³ã‚¯ã™ã‚‹å•é¡Œã®ã“ã¨
TheC10kProbl em - ã€ŒC10Kå•é¡Œã€ï¼ˆã‚¯ãƒ©ã‚¤ã‚¢ãƒ³ãƒˆ1ä¸‡å°å•é¡Œï¼‰ã¨ã¯ã€ãƒãƒ¼ãƒ‰ã‚¦ã‚§ã‚¢ã®æ€§èƒ½ä¸Šã¯å•é¡ŒãŒãªãã¦ã‚‚ã€ã‚ã¾ã‚Šã«ã‚‚ã‚¯ãƒ©ã‚¤ã‚¢ãƒ³ãƒˆã®æ•°ãŒå¤šããªã‚‹ã¨ã‚µãƒ¼ãƒãŒãƒ‘ãƒ³ã‚¯ã™ã‚‹å•é¡Œã®ã“ã¨ ç›®æ¬¡ ã“ã®æ–‡æ›¸ã«ã¤ã„ã¦ C10K å•é¡Œ é–¢é€£ã‚µã‚¤ãƒˆ ã¾ãšèªã‚€ã¹ãæœ¬ I/O ãƒ•ãƒ¬ãƒ¼ãƒ ãƒ¯ãƒ¼ã‚¯ I/O æˆ¦ç•¥ 1. å„ã‚¹ãƒ¬ãƒƒãƒ‰ãŒè¤‡æ•°ã®ã‚¯ãƒ©ã‚¤ã‚¢ãƒ³ãƒˆã‚’å—ã‘ä»˜ã‘ã‚‹. ãã—ã¦ãƒŽãƒ³ãƒ–ãƒãƒƒã‚ãƒ³ã‚° I/O ã¨ ãƒ¬ãƒ™ãƒ«ãƒ»ãƒˆãƒªã‚¬åž‹ã®å®Œäº†é€šçŸ¥ã‚’åˆ©ç”¨ã™ã‚‹. ä¼çµ±çš„ãª select() ä¼çµ±çš„ãª poll() /dev/poll kqueue() 2. å„ã‚¹ãƒ¬ãƒƒãƒ‰ãŒè¤‡æ•°ã®ã‚¯ãƒ©ã‚¤ã‚¢ãƒ³ãƒˆã‚’å—ã‘ä»˜ã‘ã‚‹. ãã—ã¦ãƒŽãƒ³ãƒ–ãƒãƒƒã‚ãƒ³ã‚° I/O ã¨ å¤‰æ›´åž‹ã®å®Œäº†é€šçŸ¥(readiness change notification)ã‚’åˆ©ç”¨ã™ã‚‹. kqueue() epoll ãƒªã‚¢ãƒ«ã‚¿ã‚¤ãƒ ãƒ»ã‚·ã‚°ãƒŠãƒ« fd å˜ä½ã®ã‚·ã‚°ãƒŠãƒ« (Signal-per-fd)
yamkazu 2011/09/06
linux

scalability

c10k
ãƒªãƒ³ã‚¯
expect. å¯¾è©±çš„ãªã‚³ãƒžãƒ³ãƒ‰(telnet,ftp,suç‰)ã‚’è‡ªå‹•å®Ÿè¡Œã—ãŸã„ã¨ã(Kodama's tips page)
Kodama's home / tips. expect. å¯¾è©±çš„ãªã‚³ãƒžãƒ³ãƒ‰(ssh, telnet, ftp, suç‰)ã‚’è‡ªå‹•å®Ÿè¡Œã—ãŸã„ã¨ã ssh, telnet , ftp ç‰ã®å¯¾è©±çš„ã«ä½¿ç”¨ã™ã‚‹ã‚ˆã†ã«ä½œã‚‰ã‚ŒãŸãƒ—ãƒã‚°ãƒ©ãƒ ã‚’ ã‚¹ã‚¯ãƒªãƒ—ãƒˆä¸ã«çµ„ã¿è¾¼ã‚“ã§å®šåž‹çš„ãªä½œæ¥ã‚’è‡ªå‹•å®Ÿè¡Œã—ãŸã„å ´åˆã«ã¯ expect ã‚’ç”¨ã„ã‚‹äº‹ã‚’ãŠå‹§ã‚ã—ã¾ã™. ã¾ãŸ, ruby è¨€èªžã‚’ä½¿ãˆã‚‹ãªã‚‰ ruby ã® expect.rb ã‚’ä½¿ã†ã®ã‚‚è‰¯ã„ã§ã—ã‚‡ã†. ã‚¹ã‚¯ãƒªãƒ—ãƒˆä¸ã§ su ãŒå¿…è¦ãªä½œæ¥ã‚’ã•ã›ãŸã„å ´åˆã«ã‚‚ä¾¿åˆ©ã§ã™. è¤‡æ•°ã®ãƒžã‚·ãƒ³ã§ã®ç®¡ç†ä½œæ¥ã«åˆ©ç”¨ã—ãŸä¾‹ãŒã‚ã‚Šã¾ã™. è¤‡æ•°ã®ãƒžã‚·ãƒ³ã§ãƒªãƒ¢âˆ’ãƒˆã§ã‚³ãƒžãƒ³ãƒ‰å®Ÿè¡Œ æ‰‹ä½œæ¥ã§ã®å®Ÿè¡Œä¾‹ æ¬¡ã¯ telnet ã—ã¦ ls ã™ã‚‹å ´é¢ã§ã™. $ telnet hoge # ãƒžã‚·ãƒ³hoge ã« telnet ã—ãŸ hoge login: foo # ãƒã‚°ã‚¤ãƒ³å foo Password: # ãƒ‘
yamkazu 2011/09/04
linux
ãƒªãƒ³ã‚¯
ãã†ã„ãˆã°sshfsãŒä¾¿åˆ©ãªä»¶ - ï¼ˆã²ï¼‰ãƒ¡ãƒ¢
ä»¥å‰ã¯ãƒªãƒ¢ãƒ¼ãƒˆã®ãƒ•ã‚¡ã‚¤ãƒ«ç·¨é›†ã™ã‚‹ã®ã«Emacsã§TRAMPä½¿ã£ã¦ãŸã‚“ã§ã™ãŒã€sshfsã®æ–¹ãŒã‚·ã‚§ãƒ«ã§cdã¨ã‹lsã§ãã‚‹ã—ã€Emacsã§occurã¨ã‹ã‚‚ã§ãã‚‹ã—ã„ã„ã‚ˆãã£ã¦ã‚“ã§æœ€è¿‘ã¯sshfsä½¿ã£ã¦ã¾ã™ã€‚ ã§ã€sshfsã—ãŸã„ãƒ›ã‚¹ãƒˆãŒå¤šã„ã¨ã„ã‚ã„ã‚ã‚ã‚“ã©ããªã‚‹ã‚“ã§ã€â†“ã¿ãŸã„ãªãƒ˜ãƒ«ãƒ‘ã‚¹ã‚¯ãƒªãƒ—ãƒˆæ›¸ã„ã¦ä½¿ã£ã¦ã¾ã—ãŸã‚ˆã£ã¦è©±ã§ã™ã€‚ ãƒžã‚¦ãƒ³ãƒˆãƒã‚¤ãƒ³ãƒˆã‚’ã¾ã¨ã‚ã¦ãŠããƒ‡ã‚£ãƒ¬ã‚¯ãƒˆãƒª(~/r/ã¨ã‹)ã®ä¸‹ã«ã€äºˆã‚sshfsã™ã‚‹ãƒªãƒ¢ãƒ¼ãƒˆãƒ›ã‚¹ãƒˆã®åå‰ã®ãƒ‡ã‚£ãƒ¬ã‚¯ãƒˆãƒªã‚’ä½œã£ã¦ãŠãã¾ã™ã€‚sshã™ã‚‹ã¨ããƒ¦ãƒ¼ã‚¶ãƒ¼åãŒå¿…è¦ãªãƒ›ã‚¹ãƒˆã¯USERNAME@HOSTNAMEã§mkdirã—ã¨ãã¾ã™ã€‚ $ cd ~/r/ $ mkdir host1 $ mkdir foo@host2 ã‚ã¨ã¯æœ«å°¾ã®ãƒ˜ãƒ«ãƒ‘ã‚¹ã‚¯ãƒªãƒ—ãƒˆã§ã€sshfsã§ãƒžã‚¦ãƒ³ãƒˆã—ãŸã‚Šã€sshfsãªãƒžã‚¦ãƒ³ãƒˆãƒã‚¤ãƒ³ãƒˆã®ä¸€è¦§ã‚’è¦‹ãŸã‚Šã€ã‚¢ãƒ³ãƒžã‚¦ãƒ³ãƒˆã—ãŸã‚Šã§ãã¾ã™ã€‚ $ ./m host1
yamkazu 2011/07/18
linux
ãƒªãƒ³ã‚¯
Apacheãƒã‚°ã«è‰²ã‚’ä»˜ã‘ã¦å¿«é©tailç”Ÿæ´» - y-kawazã®æ—¥è¨˜
ãƒ„ã‚¤ãƒƒã‚¿ãƒ¼ã§ã€ŒApacheãƒã‚°ã‚’tailä¸ã«ã‚¹ãƒ†ãƒ¼ã‚¿ã‚¹ã‚³ãƒ¼ãƒ‰éƒ¨åˆ†ã ã‘ã«è‰²ã¤ã‘ã—ãŸã„ã€ã£ã¦ã®ã‚’è¦‹ãŸã®ã§ä½œã£ã¦ã¿ãŸã€‚ #!/bin/sed -f ## MEMO # [0m reset # [1m bold # [3m italic # [4m underline # [5m blink # [30m black # [31m red # [32m green # [33m yellow # [34m blue # [35m magenta # [36m cyan # [37m white s/$HTTP\/1..\"$ $2[0-9][0-9]$ /\1 \x1b[34m\2\x1b[0m / s/$HTTP\/1..\"$ $3[0-9][0-9]$ /\1 \x1b[32m\2\x1b[0m / s/$HTTP\/1..\"$ $4[0-9][0-9]$ /\1
yamkazu 2011/07/13
linux
ãƒªãƒ³ã‚¯
è²§ä¹äººã®RedHat: CentOSã¨Scientific Linuxã®é•ã„ | beroã®æ—¥è¨˜ | ã‚¹ãƒ©ãƒ‰
ã¾ã¨ã‚ï¼šCentOS 6ãŒå¾…ã¦ãªã„/å°†æ¥æ€§ã«ä¸å®‰ãŒã‚ã£ãŸã‚‰Scientific Linuxã«ä¹—ã‚Šæ›ãˆã‚ RHEL6ãŒå‡ºã¦ã‹ã‚‰ãªã‹ãªã‹CentOS 6 ãŒå‡ºã¦ã“ãªã„ãŒã€ä»–ã®ã‚¯ãƒãƒ¼ãƒ³ã§ã‚ã‚‹Oracle Linux 6ã¨Scientific Linux 6ã¯ãƒªãƒªãƒ¼ã‚¹ã•ã‚Œã¦ã„ã‚‹ã€‚ Oracle Linuxã¯ãƒªãƒªãƒ¼ã‚¹ã‚¤ãƒ¡ãƒ¼ã‚¸ã¯ç„¡æ–™ã ãŒæ›´æ–°ã¯æœ‰æ–™ã£ã½ã„ã®ã§å´ä¸‹ã€‚ Scientific Linuxã¯NASAã‚„Fermiã€CERNãŒç ”ç©¶æ‰€å†…ã§ä½¿ã†ãŸã‚ã«RHELã«ç ”ç©¶é–¢é€£ã®ã‚½ãƒ•ãƒˆã‚’è¿½åŠ ã—ã¦ãƒ‘ãƒƒã‚±ãƒ¼ã‚¸ãƒ³ã‚°ã—ãŸã‚‚ã®ã€‚ CentOS6ã¯å‡ºã¦ãªã„ã®ã§CentOS5.5ã¨SL5.5ã§æ¯”è¼ƒã—ã¦ã¿ã‚‹ ftp://ftp.riken.jp/Linux/centos/5/os/i386/CentOS/ ftp://ftp.riken.jp/Linux/scientific/5x/i386/SL/ *ãƒ‘ãƒƒã‚±ãƒ¼ã‚¸ centã«ã‚ã£
yamkazu 2011/06/28
linux
ãƒªãƒ³ã‚¯
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yamkazu 2011/06/06
git

linux
ãƒªãƒ³ã‚¯
GNU ParallelãŒã™ã”ã™ãŽã¦ç”Ÿãã‚‹ã®ãŒã¤ã‚‰ã„
çš†ã•ã‚“ä»Šæ—¥ã‚‚ãŸãã•ã‚“ã®ã‚µãƒ¼ãƒã‚’ç›¸æ‰‹ã«ã•ã‚Œã¦ã„ã‚‹ã“ã¨ã‹ã¨æ€ã„ã¾ã™ãŒã€ã„ãã¤ã‹ã®ã‚µãƒ¼ãƒã«ã‚¢ã‚¯ã‚»ã‚¹ã—ã¦ 1 ç§’é–“ã®çµ±è¨ˆæƒ…å ±(ä¾‹ãˆã°vmstat 1 2)ã‚’é›†ã‚ã¦ãƒ‘ãƒƒã¨è¡¨ç¤ºã—ãŸã„æ™‚ã£ã¦ã©ã†ã‚„ã£ã¦ã¾ã™ã‹ãï¼Ÿshell script ã‚’å¦ã³ã¯ã˜ã‚ãŸã°ã£ã‹ã‚Šã®åƒ•ã¯ã“ã‚“ãªæ„Ÿã˜ã§æ›¸ã„ã¦ã¾ã—ãŸã€‚ $ for i in host1 host2 host3; do ssh $i "vmstat 1 2 | tail -1"; done 0 0 0 329004 210836 14275360 0 0 0 2424 1410 1828 0 0 100 0 0 0 0 0 3716112 587704 25921684 0 0 0 488 1643 2026 0 0 100 0 0 1 0 0 555440 265560 14015548 0 0 0 4204 1534 2392 1 0 99 0 0 vmstatã¨
yamkazu 2011/04/19
linux
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yamkazu 2011/03/01
topã¿ã¦ã¦ã”ã‚ã‚“ãªã•ã„ã€‚ã€‚

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yamkazu 2011/02/15
linux
ãƒªãƒ³ã‚¯
Linuxã§ã†ã£ã‹ã‚Šrm -rfã—ã¡ã‚ƒã£ãŸã‘ã©å¾©æ´»å‡ºæ¥ãŸã‚ˆãƒ¼ï¼¼(ï¼¾oï¼¾)ï¼ - y-kawazã®æ—¥è¨˜
ã‚µãƒ¼ãƒã®ãƒ•ã‚¡ã‚¤ãƒ«æ•´ç†ä½œæ¥ã‚’ã—ã¦ã„ãŸã¨ã“ã‚â€¦ã€ é–“é•ãˆã¦rm -rfã—ã¦ã—ã¾ã£ãŸï¼ ãŽã‚ƒãƒ¼ãƒãƒƒã‚¯ã‚¢ãƒƒãƒ—ã‚‚ããƒ¼ï¼ é•·ã„ã“ã¨ç”Ÿãã¦ãŸã‚‰ã“ã‚“ãªçµŒé¨“ã®1åº¦ã‚„2åº¦ã¯ã‚ã‚Šã¾ã™ã‚ˆãï¼Ÿ ãˆã‡ã€ã¤ã„ã•ã£ãã‚„ã‚‰ã‹ã—ã¡ã‚ƒã„ã¾ã—ãŸï½—ï½—ã‚ªãƒ¯ã‚¿ï½—ï½—ï½— é€Ÿæ”»ã€Œrm å¾©æ´»ã€ã¨ã‹ã€Œrm å–ã‚Šæ¶ˆã—ã€ã¨ã‹ã§ã‚°ã‚°ãƒƒãŸãï½—ã€ã—ãŸã‚‰mcã£ã¦ãƒ—ãƒã‚°ãƒ©ãƒ ã®Undeleteæ©Ÿèƒ½ä½¿ãˆã°ã‚ˆã„ã£ã¦æƒ…å ±ãŒå‡ºã¦ãã‚‹ãŒã€ã©ã†ã‚„ã‚‰ã“ã‚Œext2ã˜ã‚ƒãªã„ã¨ä½¿ãˆãªã„ã£ã½ã„ãžâ€¦ã€ã†ã¡ext4ã ã€‚ æ··ä¹±ã€‚ä»¥ä¸‹ã‚¿ãƒ¼ãƒŸãƒŠãƒ«ã®ãƒ’ã‚¹ãƒˆãƒªãƒ¼ã‚ˆã‚Šå®Ÿæ³ã€‚ ## ã“ãƒ¼ã„ã†ã¨ãã¯ã¾ãšã‚ã‚Œã ã€ç¾å ´ä¿å˜ï¼ ## ã¾ãšã¯ä»Šã„ã‚‹ãƒ‘ãƒ¼ãƒ†ã‚£ã‚·ãƒ§ãƒ³ã‚’ç¢ºèª # df -hT Filesystem Type ã‚µã‚¤ã‚º ä½¿ç”¨ æ®‹ã‚Š ä½¿ç”¨% ãƒžã‚¦ãƒ³ãƒˆä½ç½® /dev/sdb2 ext4 193G 6.9G 176G 4% / /dev/sdb1 ext3 194M 22M 163M 12% /boot /d
yamkazu 2011/01/24
linux
ãƒªãƒ³ã‚¯
LANå†…ã§ä½¿ç”¨ä¸ã®IPã‚¢ãƒ‰ãƒ¬ã‚¹(pingã§å¿œç”ãŒã‚ã‚‹ãƒŽãƒ¼ãƒ‰)ã‚’ç°¡æ˜“ã«èª¿æŸ»ã™ã‚‹ãƒ¯ãƒ³ãƒ©ã‚¤ãƒŠãƒ¼(Linuxç·¨) - å…ƒRX-7ä¹—ã‚Šã®é©å½“ãªæ—¥ã€…
æ˜¨æ—¥ã€æ›¸ã„ãŸãƒ¡ãƒ¢ã‚¨ãƒ³ãƒˆãƒªã€‚ LANå†…ã§ä½¿ç”¨ä¸ã®IPã‚¢ãƒ‰ãƒ¬ã‚¹(pingã§å¿œç”ãŒã‚ã‚‹ãƒŽãƒ¼ãƒ‰)ã‚’ç°¡æ˜“ã«èª¿æŸ»ã™ã‚‹ãƒ¯ãƒ³ãƒ©ã‚¤ãƒŠãƒ¼(Windowsç·¨) "Windowsç·¨"ã¨æ›¸ã„ãŸã‹ã‚‰ã«ã¯ã€"Linuxç·¨"ã‚‚æ›¸ã„ã¦ãŠã“ã†ã‹ã¨æ€ã„ã¾ã—ã¦ã€bashç‰ˆã‚’ã€‚(ã©ã“ã§ã‚‚å®Ÿè¡Œã§ãã‚‹æ§˜ã€ãƒãƒ¼ã‚¿ãƒ“ãƒªãƒ†ã‚£é‡è¦–ï½—) $ for a in `seq 1 254`; do ping -c 1 -w 1 192.168.1.$a > /dev/null && arp -a 192.168.1.$a | grep ether; doneã¡ã‚‡ã£ã¨é•·ã„ã§ã™ãŒã€ã“ã‚“ãªæ„Ÿã˜ã‹ã—ã‚‰ã€‚(ãƒ–ãƒãƒ¼ãƒ‰ã‚ãƒ£ã‚¹ãƒˆãƒ‘ã‚±ãƒƒãƒˆã‚’æ‹’å¦ã™ã‚‹ãƒŽãƒ¼ãƒ‰ãŒã„ãŸã®ã§ãƒ»ãƒ»ãƒ»ã€‚) ãƒ•ã‚¡ã‚¤ãƒ«ç‰ãƒã‚°å‡ºåŠ›ã—ãŸã„å ´åˆã¯ã€ãƒªãƒ€ã‚¤ãƒ¬ã‚¯ãƒˆã‚’ä»˜ã‘ã¦å®Ÿè¡Œã—ã¦ãã ã•ã„ã€‚ è©³è§£ ã‚·ã‚§ãƒ«ã‚¹ã‚¯ãƒªãƒ—ãƒˆ ä½œè€…:Arnold Robbins,Nelson H. F. Beebeå‡ºç‰ˆç¤¾/ãƒ¡ãƒ¼ã‚«ãƒ¼: ã‚ªãƒ©ã‚¤ãƒªãƒ¼
yamkazu 2011/01/04
linux
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webãƒ©ã‚¸ã‚ªãƒšãƒ¼ã‚¹ãƒ¡ãƒ¼ã‚«ãƒ¼ï¼šZAKZAK
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yamkazu 2010/12/27
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linux
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