[B! unix] gom68ã®ãƒ–ãƒƒã‚¯ãƒžãƒ¼ã‚¯

gom68 id:gom68

unixã«é–¢ã™ã‚‹gom68ã®ãƒ–ãƒƒã‚¯ãƒžãƒ¼ã‚¯ (6)

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ã©ã®UNIXã‚³ãƒžãƒ³ãƒ‰ã§ã‚‚ä½¿ãˆã‚‹æ£è¦è¡¨ç¾ - Qiita
ç‰¹å®šã‚³ãƒžãƒ³ãƒ‰ã®æ£è¦è¡¨ç¾ã§ä½¿ãˆã‚‹ãƒ¡ã‚¿æ–‡å—ãŒä½•ã ã‹ã‚ã‹ã‚‰ãªã„ï¼ æ£è¦è¡¨ç¾è‡ªä½“ã¯çŸ¥ã£ã¦ã„ã‚‹ã‘ã©ã€ãã‚ŒãŒä»Šã‹ã‚‰ä½¿ãŠã†ã¨ã—ã¦ã„ã‚‹ã‚³ãƒžãƒ³ãƒ‰ã§ä½¿ãˆã‚‹ã‚‚ã®ãªã®ã‹ã‚ã‹ã‚‰ãšã«å›°ã£ã¦ã„ã‚‹äººã‚‚å¤šã„ã¨æ€ã†ã®ã§ã¾ã¨ã‚ã¦ã¿ãŸã€‚ ãŸã£ãŸ3ã¤ã®æ£è¦è¡¨ç¾ãƒ¡ã‚¿æ–‡å—ã‚»ãƒƒãƒˆã ã‘çŸ¥ã‚Œã°ã„ã„ ã‚³ãƒžãƒ³ãƒ‰ã«ã‚ˆã£ã¦ã€å¯¾å¿œã—ã¦ã„ã‚‹æ£è¦è¡¨ç¾ãƒ¡ã‚¿æ–‡å—ã®ç¯„å›²ã«ã¯é•ã„ãŒã‚ã‚‹ã€‚ã—ã‹ã—ã€æœ€ä½Žé™çŸ¥ã£ã¦ãŠã‘ã°ã‚ˆã„ã®ã¯2ç¨®é¡ž+1ã‚µãƒ–ã‚»ãƒƒãƒˆã®3ã¤ã ã‘ã ã€‚ BREï¼ˆåŸºæœ¬æ£è¦è¡¨ç¾ï¼‰ãƒ¡ã‚¿æ–‡å—ã‚»ãƒƒãƒˆ EREï¼ˆæ‹¡å¼µæ£è¦è¡¨ç¾ï¼‰ãƒ¡ã‚¿æ–‡å—ã‚»ãƒƒãƒˆ AWKã®ã‚µãƒ–ã‚»ãƒƒãƒˆ ã‚‚ã¡ã‚ã‚“ã€ã“ã‚Œä»¥å¤–ã«ã‚‚GNUæ‹¡å¼µæ£è¦è¡¨ç¾ãƒ¡ã‚¿æ–‡å—ã‚»ãƒƒãƒˆã‚„Perlæ‹¡å¼µæ£è¦è¡¨ç¾ãƒ¡ã‚¿æ–‡å—ã‚»ãƒƒãƒˆã€JavaScriptæ‹¡å¼µæ£è¦è¡¨ç¾ãƒ¡ã‚¿æ–‡å—ã‚»ãƒƒãƒˆãªã©ã„ãã¤ã‹ã‚ã‚‹ã®ã ãŒã€ã€Œã©ã®UNIXã§ã‚‚ï¼ˆ=POSIXã§ï¼‰ä½¿ãˆã‚‹ã€ã¨ã„ã†ç‰¹é•·ã‚’æŒãŸã›ãŸã„ã®ã§ã‚ã‚Œã°ã€ãã‚Œã‚‰ã¯è¦šãˆã¦ã‚‚æ„å‘³ãŒãªã„ã®ã§ä¸Šè¨˜ã®3ã¤ã•ãˆãŠã•ãˆã¦ãŠã‘ã°ã‚ˆã„ã€‚ï¼ˆä¾‹ãˆPOSI
gom68 2015/05/11
unix

shell

regexp
ãƒªãƒ³ã‚¯
Unixãƒ‡ãƒ¼ãƒ¢ãƒ³ã®ä»•çµ„ã¿
Home Subscribe Unixãƒ‡ãƒ¼ãƒ¢ãƒ³ã®ä»•çµ„ã¿ 12 March 2015 ãŠã¯ã“ã‚“ã°ã‚“ã¡ã¯!! å°¾è—¤ a.k.a. BTO ã§ã™ã€‚ ã¿ãªã•ã‚“ã€Unixãƒ‡ãƒ¼ãƒ¢ãƒ³ã‚ˆãä½¿ã£ã¦ã¾ã™ã‚ˆãã€‚ Webã‚¨ãƒ³ã‚¸ãƒ‹ã‚¢ãªã‚‰ã€Webã‚µãƒ¼ãƒã€ãƒ¡ãƒ¼ãƒ«ã‚µãƒ¼ãƒã€DBã‚µãƒ¼ãƒã€cronãªã©ãŒã‚ˆãä½¿ã‚ã‚Œã‚‹ã®ã§ã¯ãªã„ã§ã—ã‚‡ã†ã‹ã€‚ 24æ™‚é–“365æ—¥é»™ã€…ã¨åƒãç¶šã‘ã‚‹Unixãƒ‡ãƒ¼ãƒ¢ãƒ³é”ã€‚ èº«è¿‘ãªå˜åœ¨ã ã¨æ€ã„ã¾ã™ãŒã€å®Ÿã¯ã©ã†ã„ã†ä»•çµ„ã¿ã§å‹•ã„ã¦ã„ã‚‹ã®ã‹ã”å˜ã˜ãªã„æ–¹ã‚‚å¤šã„ã®ã§ã¯ãªã„ã§ã—ã‚‡ã†ã‹ã€‚ å…ˆæ—¥ã€ã‚ªãƒˆãƒãƒ³ã‚¯ã§Unixãƒ‡ãƒ¼ãƒ¢ãƒ³ã®ä»•çµ„ã¿ã«ã¤ã„ã¦å‹‰å¼·ä¼šã‚’ã‚„ã£ãŸã®ã§ã€ãã®å†…å®¹ã‚’ã¾ã¨ã‚ã¾ã™ã€‚ ãƒ‡ãƒ¼ãƒ¢ãƒ³ã¨ã¯ ã§ã¯ã€ãƒ‡ãƒ¼ãƒ¢ãƒ³ã¨ã¯ã„ã£ãŸã„ä½•ãªã®ã§ã—ã‚‡ã†ã‹ã€‚ Unixãƒ©ã‚¤ã‚¯ã‚·ã‚¹ãƒ†ãƒ ã«ãŠã„ã¦ã€ãƒãƒƒã‚¯ã‚°ãƒ©ãƒ³ãƒ‰ã§å‹•ä½œã—ã¦æ§˜ã€…ãªå‡¦ç†ã‚’å®Ÿè¡Œã—ã¦ãã‚Œã‚‹ãƒ—ãƒã‚»ã‚¹ãŒãƒ‡ãƒ¼ãƒ¢ãƒ³ã§ã™ã€‚ ãƒ‡ãƒ¼ãƒ¢ãƒ³ã«ã¯æ˜Žç¢ºãªå®šç¾©ã¯ã‚ã‚Šã¾ã›ã‚“ãŒã€ã ã„ãŸã„æ¬¡ã®ã‚ˆã†ãªæ¡ä»¶ã‚’æº€ãŸã™ãƒ—ãƒã‚»ã‚¹ãŒ
gom68 2015/03/12
unix
ãƒªãƒ³ã‚¯
fork()ã¯å¤±æ•—ã™ã‚‹ã‚“ã ãœã€è¦šãˆã¨ããª
fork() can fail: this is important ã‚ãƒ¼ã€fork()ã®ã“ã¨ãã€‚ãƒ—ãƒã‚»ã‚¹ãŒã‚‚ã£ã¨ãƒ—ãƒã‚»ã‚¹ä½œã‚‹ãŸã‚ã®ã‚„ã¤ãªã€‚ã„ã‚„ã€ä»–ã«ã‚‚ãƒ—ãƒã‚»ã‚¹ä½œã‚‹æ–¹æ³•ã¯ã‚ã‚‹ã‘ã©ãªã€‚ã¾ã€é¢ç™½ã„è©±ãŒã‚‚ã†ã²ã¨ã¤ã‚ã‚‹ã‹ã‚‰èžã‹ã›ã¦ã‚„ã‚‹ã‚ˆã€‚ forkã¯å¤±æ•—ã™ã‚‹ã‚“ã ãœã€‚åˆ†ã‹ã£ã¦ã‚‹ã‹ï¼Ÿã€€ãƒžã‚¸ã§åˆ†ã‹ã£ã¦ã‚‹ã‹ï¼Ÿã€€ãƒžã‚¸ã ãœã€‚forkã¯å¤±æ•—ã™ã‚‹ã‚‚ã‚“ã ã€‚mallocã¨åŒã˜ã•ã€‚å¤±æ•—ã™ã‚‹ã“ã¨ã‚‚ã‚ã‚‹ã€‚ãã‚“ãªã«é »ç¹ã«ã£ã¦ã‚ã‘ã˜ã‚ƒãªã„ã‘ã©ã•ã€ã§ã‚‚å¤±æ•—ã—ãŸã‚‰ã€ç„¡è¦–ã§ãã£ã“ãªã„ãœã€‚ã¡ã£ã¨ã¯è„³ã¿ãåƒã‹ã›ãªãã‚ƒãªã‚‰ã‚“ã€‚ forkãŒ0ã‚’è¿”ã—ãŸã‚‰ã€ãã„ã¤ã¯åãƒ—ãƒã‚»ã‚¹ã§ã€è¦ªãªã‚‰æ£æ•°ã‚’è¿”ã™ã£ã¦ã“ã¨ã¯ã€ã¿ã‚“ãªçŸ¥ã£ã¦ã‚‹ã‚ˆãªã€‚ãã®å€¤ã¯åã®pidã ã€‚ã“ã„ã¤ã‚’ä¿å˜ã—ã¨ã„ã¦ã€ã‚ã¨ã§ä½¿ã†ã£ã¦ã‚ã‘ã ã€‚ å¤±æ•—ã‚’ç¢ºèªã—ãªã„å ´åˆã©ã†ãªã‚‹ã‹çŸ¥ã£ã¦ã‚‹ã‹ï¼Ÿã€€ãã†ã ã‚ˆã€‚ãŠå‰å¤šåˆ†ã€"-1"ï¼ˆforkã®ã‚¨ãƒ©ãƒ¼é€šçŸ¥ï¼‰ã‚’pidã¨ã—ã¦æ‰±ã£ã¦ã‚‹ã‚“ã ã‚ã€‚ ã•ã¦ã€å•é¡Œã®å§‹ã¾ã‚Šã ã€‚æœ¬å½“
gom68 2014/08/21
unix

linux
ãƒªãƒ³ã‚¯
Unix Programming Frequently Asked Questions æ—¥æœ¬èªžè¨³ - Table of Contents
ã“ã®FAQã«ã¤ã„ã¦ 1 ãƒ—ãƒã‚»ã‚¹åˆ¶å¾¡ 1.1 æ–°ã—ã„ãƒ—ãƒã‚»ã‚¹ã®ç”Ÿæˆ: fork() 1.1.1 fork()ã¯ä½•ã‚’ã™ã‚‹ã®ã§ã™ã‹? 1.1.2 fork()ã¨vfork()ã®é•ã„ã¯ä½•ã§ã™ã‹? 1.1.3 forkã«ã‚ˆã‚‹åãƒ—ãƒã‚»ã‚¹ã‚’çµ‚äº†ã™ã‚‹ã¨ãã«exitã‚ˆã‚Šã‚‚_exitã‚’ä½¿ã†ã®ã¯ãªãœã§ã™ã‹? 1.2 ç’°å¢ƒå¤‰æ•° 1.2.1 ã©ã†ã™ã‚Œã°ãƒ—ãƒã‚°ãƒ©ãƒ å†…ã§ç’°å¢ƒå¤‰æ•°ã®å€¤ã‚’å–å¾—ãƒ»è¨å®šã§ãã¾ã™ã‹? 1.2.2 ã©ã†ã™ã‚Œã°å…¨ã¦ã®ç’°å¢ƒå¤‰æ•°ã‚’èª¿ã¹ã‚‰ã‚Œã¾ã™ã‹? 1.3 ã©ã†ã™ã‚Œã°ä¸€ç§’æœªæº€ã®sleepãŒã§ãã¾ã™ã‹? 1.4 ç²’åº¦ã®ç´°ã‹ã„alarm()ã¯ã©ã†ã™ã‚Œã°å¾—ã‚‰ã‚Œã¾ã™ã‹? 1.5 ã©ã†ã™ã‚Œã°è¦ªãƒ—ãƒã‚»ã‚¹ã¨åãƒ—ãƒã‚»ã‚¹ã®é–“ã§é€šä¿¡ã§ãã¾ã™ã‹? 1.6 ã©ã†ã™ã‚Œã°ã‚¾ãƒ³ãƒ“ãƒ—ãƒã‚»ã‚¹ãŒã§ãã‚‹ã“ã¨ã‚’é˜²ãã“ã¨ãŒã§ãã¾ã™ã‹? 1.6.1 ã‚¾ãƒ³ãƒ“ãƒ—ãƒã‚»ã‚¹ã£ã¦ãªã‚“ã§ã™ã‹? 1.6.2 ã©ã†ã™ã‚Œã°ã‚¾ãƒ³ãƒ“ãƒ—ãƒã‚»ã‚¹ã«ãªã‚‹ã“ã¨ã‚’é˜²ã’ã¾ã™ã‹? 1.7
gom68 2013/12/09
unix

linux

programming

c
ãƒªãƒ³ã‚¯
æŠ€è¡“/UNIX/ãªãœnohupã‚’ãƒãƒƒã‚¯ã‚°ãƒ©ãƒ³ãƒ‰ã‚¸ãƒ§ãƒ–ã¨ã—ã¦èµ·å‹•ã™ã‚‹ã®ãŒå®šç•ªãªã®ã‹ï¼Ÿ(æ“¬ä¼¼ç«¯æœ«, Pseudo Terminal, SIGHUPä»–) - Glamenv-Septzen.net
ãƒ›ãƒ¼ãƒ æ¤œç´¢Â - ãƒã‚°ã‚¤ãƒ³ | |Â Â ãƒ˜ãƒ«ãƒ— æŠ€è¡“/UNIX/ãªãœnohupã‚’ãƒãƒƒã‚¯ã‚°ãƒ©ãƒ³ãƒ‰ã‚¸ãƒ§ãƒ–ã¨ã—ã¦èµ·å‹•ã™ã‚‹ã®ãŒå®šç•ªãªã®ã‹ï¼Ÿ(æ“¬ä¼¼ç«¯æœ«, Pseudo Terminal, SIGHUPä»–) [Â PrevÂ ] [Â NextÂ ] [Â æŠ€è¡“Â ] ä½•ã‚’ã„ã¾ã•ã‚‰å½“ãŸã‚Šå‰ã®äº‹ã‚’ãƒ»ãƒ»ãƒ»ã¨æ€ã‚ã‚Œã‚‹ã ã‚ã†ã€‚ $ nohup long_run_batch.sh & SSHã‹ã‚‰ãƒã‚°ã‚¢ã‚¦ãƒˆå¾Œã‚‚å®Ÿè¡Œã‚’ç¶šã‘ãŸã„ãƒãƒƒãƒã‚¸ãƒ§ãƒ–ã‚’ã€"&"ã‚’ä»˜ã‘ã¦ãƒãƒƒã‚¯ã‚°ãƒ©ã‚¦ãƒ³ãƒ‰ã‚¸ãƒ§ãƒ–ã¨ã—ã¦nohupã‹ã‚‰èµ·å‹•ã™ã‚‹ã®ã¯å®šç•ªä¸ã®å®šç•ªã§ã‚ã‚‹ã€‚ ã—ã‹ã—ã€ã€Œnohupã‚’ä½¿ã‚ãªãã¦ã‚‚å®Ÿè¡Œã‚’ç¶šã‘ã‚‹ã“ã¨ãŒå‡ºæ¥ã‚‹ã€ã‚„ã‚Šæ–¹ãŒã‚ã£ãŸã‚Šã€ã•ã‚‰ã«ã¯ã€Œnohupã‚’ä»˜ã‘ã¦ã‚‚ãƒã‚°ã‚¢ã‚¦ãƒˆæ™‚ã«çµ‚äº†ã—ã¦ã—ã¾ã†ã€ãƒ‘ã‚¿ãƒ¼ãƒ³ãŒã‚ã‚‹ã¨ã—ãŸã‚‰ã©ã†ã ã‚ã†ï¼Ÿ ãã—ã¦ã€ã‚ã‚‹æ—¥ã‚ãªãŸã®å¾Œè¼©ã‚„åŒåƒšãŒã“ã‚Œã‚‰ã«ã¤ã„ã¦ã‚ãªãŸã«è³ªå•ã—ã¦ããŸã‚‰ã€ã‚ãªãŸã¯ã©ã†ç”ãˆã‚‹ã ã‚ã†ã‹ï¼Ÿ ã€ŒWebä¸Šã§æ¤œç´¢ã—ãŸã‚‰è¦‹ã¤ã‹
gom68 2013/10/03
shell

unix
ãƒªãƒ³ã‚¯
æ§˜ã€…ãªUNIXç’°å¢ƒã®echo.cã®æ¯”è¼ƒ
UNIX V5, OpenBSD, Plan 9, FreeBSD, and GNU coreutils implementations of echo.c UNIX Fifth Editionã®echo.cã¯ã€ä»¥ä¸‹ã®ã‚ˆã†ãªå®Ÿè£…ã«ãªã£ã¦ã„ã‚‹ã€‚ main(argc, argv) int argc; char *argv[]; { int i; argc--; for(i=1; i<=argc; i++) printf("%s%c", argv[i], i==argc? '\n': ' '); } ã„ã‹ã«ã‚‚æ˜”ã®Cè¨€èªžã‚‰ã—ã„ã‚³ãƒ¼ãƒ‰ã ã€‚ãƒ˜ãƒƒãƒ€ãƒ¼ã®#includeã¯ãªãã€é–¢æ•°ã®æˆ»ã‚Šå€¤ã®åž‹ã‚‚æŒ‡å®šã•ã‚Œãªã„ã€‚ä»®å¼•æ•°ã®åž‹ã‚‚ã€ä»Šã¨ãªã£ã¦ã¯ç‰©çã—ã„ã ã‚ã†ãŒå¾Œæ›¸ãã ã€‚ OpenBSDã®ã‚³ãƒ¼ãƒ‰ã¯ä»¥ä¸‹ã®é€šã‚Šã€‚ /* $OpenBSD: echo.c,v 1.7 2009/10/27 23:59:21 deraadt
gom68 2013/05/06
unix
ãƒªãƒ³ã‚¯
1