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Upstart - Wikipedia
Upstartã¯ã€ã„ãã¤ã‹ã®Unixç³»ã‚³ãƒ³ãƒ”ãƒ¥ãƒ¼ã‚¿ã‚ªãƒšãƒ¬ãƒ¼ãƒ†ã‚£ãƒ³ã‚°ã‚·ã‚¹ãƒ†ãƒ ã§èµ·å‹•æ™‚ã«ã‚¿ã‚¹ã‚¯ã‚’å®Ÿè¡Œã™ã‚‹æ‰‹æ³•ã¨ã—ã¦å¤ãã‹ã‚‰å‚™ã‚ã‚‹initãƒ‡ãƒ¼ãƒ¢ãƒ³ã®ä»£ã‚ã‚Šã¨ãªã‚‹ã‚‚ã®ã§ã€ã‚¤ãƒ™ãƒ³ãƒˆé§†å‹•åž‹ã§ã‚ã‚‹ç‚¹ã«ç‰¹å¾´ãŒã‚ã‚‹ã€‚Upstartã¯ã€å½“æ™‚ã‚«ãƒŽãƒ‹ã‚«ãƒ«ã®å¾“æ¥å“¡ã§ã‚ã£ãŸã‚¹ã‚³ãƒƒãƒˆãƒ»ã‚¸ã‚§ãƒ¼ãƒ ã‚ºãƒ»ãƒ¬ãƒ ãƒŠãƒ³ãƒˆï¼ˆè‹±èªžç‰ˆï¼‰ãŒé–‹ç™ºã—ãŸã€‚ å…ƒã€…å¤ãã‹ã‚‰å‚™ã‚ã‚‹initãƒ—ãƒã‚»ã‚¹ã¯ã€é›»æºã‚ªãƒ³ã®å¾Œã«ã‚³ãƒ³ãƒ”ãƒ¥ãƒ¼ã‚¿ã‚’é€šå¸¸ã®èµ·å‹•çŠ¶æ…‹ã«ã™ã‚‹ã“ã¨ã‚„ã€ã‚·ãƒ£ãƒƒãƒˆãƒ€ã‚¦ãƒ³å‰ã«ãã¡ã‚“ã¨ã‚µãƒ¼ãƒ“ã‚¹ã‚’çµ‚äº†ã™ã‚‹ã“ã¨ã«ã—ã‹è²¬ä»»ã‚’æŒãŸãªã‹ã£ãŸã€‚ã“ã®ãŸã‚ã€å‰è¨˜ã®è¨è¨ˆã«ã‚ˆã‚Šç¾åœ¨ã®ã‚¿ã‚¹ã‚¯ãŒå®Œäº†ã™ã‚‹ã¾ã§å°†æ¥ã®ã‚¿ã‚¹ã‚¯ã¯åŽ³æ ¼ã«åŒæœŸåŒ–ã•ã‚Œã€ã•ã‚‰ã«ãƒ–ãƒãƒƒã‚¯ã•ã‚Œã¦ã—ã¾ã†ã€‚ã•ã‚‰ã«æº–å‚™ã‚„ã‚¯ãƒªãƒ¼ãƒ³ã‚¢ãƒƒãƒ—æ©Ÿèƒ½ã«ã‚ˆã‚‹åˆ¶é™ã‚’å—ã‘ã‚‹ãŸã‚ã€ã“ã‚Œã‚‰ã®ã‚¿ã‚¹ã‚¯ã¯ã‚ã‚‰ã‹ã˜ã‚å®šç¾©ã•ã‚Œãã°ãªã‚‰ãªã„ã€‚ã“ã‚Œã§ã¯ç¾ä»£ã®ãƒ‡ã‚¹ã‚¯ãƒˆãƒƒãƒ—ã‚³ãƒ³ãƒ”ãƒ¥ãƒ¼ã‚¿ã«ãŠã‘ã‚‹ã‚¹ã‚¿ãƒ¼ãƒˆã‚¢ãƒƒãƒ—ä»¥å¤–ã®ã€ä»¥ä¸‹ã«æŒ™ã’ã‚‹ã‚ˆã†ãªæ§˜ã€…ãªã‚¿ã‚¹ã‚¯ã‚’ç°¡æ½”ã«å‡¦ç†ã§ããª
Yamashiro0217 2013/07/24
shell

unix
ãƒªãƒ³ã‚¯
Ken Thompsonæ° | ãˆã³ã‚ã‚‚(2004-04-13)
â– Ken Thompsonæ° å¤ã„è©±ã§ã™ãŒã€ä»Šæ—¥ Ken Thompsonæ°ã®æœ‰åãªback dooräº‹ä»¶ã‚’çŸ¥ã£ãŸï¼ˆæ°ã¯UNIXã‚’ä½œã£ãŸç”·ã®ä¸€äººã§ã‚ã‚‹ï¼‰ã€‚backdoorã¨ã¯ã€ã‚·ã‚¹ãƒ†ãƒ ã‚„ãƒ—ãƒã‚°ãƒ©ãƒ ã®ä½œè€…ãŒã€ä½œè€…ã—ã‹çŸ¥ã‚Šãˆãªã„ç§˜å¯†ã®æ‰‹é †ã‚’çµ„ã¿è¾¼ã‚“ã§ãŠãã€ã‚ã¨ã§ãã®ã‚·ã‚¹ãƒ†ãƒ ã¸ä¾µå…¥ã™ã‚‹ãŸã‚ã®è£å£ã‚’ä½œã£ã¦ãŠãã“ã¨ã§ã‚ã‚‹ã€‚åºƒã„æ„å‘³ã§è¨€ãˆã°ã‚²ãƒ¼ãƒ ã®è£æŠ€ã‚„ã‚¢ã‚¯ã‚·ãƒ§ãƒ³ã‚²ãƒ¼ãƒ ã®ä¸»äººå…¬ã®ç„¡é™å¢—æ®–ãªã©ã‚‚ã“ã®é¡žã®ã‚‚ã®ã ã‚ã†ã€‚ æ°ã¯åˆæœŸã®(1970å¹´ä»£åˆé ã®)UNIXã‚·ã‚¹ãƒ†ãƒ ã®login ã‚³ãƒžãƒ³ãƒ‰ã«ãƒãƒƒã‚¯ãƒ‰ã‚¢ã‚’ä»•è¾¼ã‚“ã§ãŠãã€ãƒã‚°ã‚¤ãƒ³åktã¨ã€ã¨ã‚ã‚‹ãƒ‘ã‚¹ãƒ¯ãƒ¼ãƒ‰ã‚’å…¥åŠ›ã™ã‚‹ã¨ã€ãã®ã‚¢ã‚«ã‚¦ãƒ³ãƒˆãŒå˜åœ¨ã—ãªãã¦ã‚‚ã‚·ã‚¹ãƒ†ãƒ ã«ä¾µå…¥ã§ãã‚‹ä»•æŽ›ã‘ã‚’å…¥ã‚Œã¦ãŠã„ãŸã€‚ã—ã‹ã‚‚ãã‚Œã‚’æ°ãŒ1984å¹´ã«è«–æ–‡ã§ç™ºè¡¨ã™ã‚‹ã¾ã§èª°ã‚‚è¦‹ç ´ã‚Œãªã‹ã£ãŸã€‚ã¨ã„ã†ã®ã ã€‚ ãã®æã‚‹ã¹ãæ‰‹æ³•ã¯æ¬¡ã®é€šã‚Šã§ã‚ã‚‹ã€‚ã‚‚ã— login.c ã«ãƒãƒƒã‚¯ãƒ‰ã‚¢ã‚’è¨˜è¿°ã—ã¦ãŠã„ãŸã‚‰ã™ãã«è¦‹
Yamashiro0217 2012/01/14
hack

unix
ãƒªãƒ³ã‚¯
ä¸Šã«è¡Œãcdä½œã£ãŸ - hitode909ã®æ—¥è¨˜
ã‚·ã‚§ãƒ«ã§ï¼Œä¸Šã®ãƒ‡ã‚£ãƒ¬ã‚¯ãƒˆãƒªã«è¡Œãã®ãŒã‚ã‚“ã©ãã•ãã¦ï¼Œcd ../../../../ã¨ã‹ã—ãªã„ã¨ã„ã‘ãªãã¦ï¼ŒæŒ‡ã‚’ç—›ã‚ã‚‹ï¼Ž ä¸Šã«è¡ŒããŸã‚ã®upã£ã¦ã„ã†ã‚³ãƒžãƒ³ãƒ‰ã‚’ä½œã‚‹ã“ã¨ã«ã—ãŸï¼Ž ãã®1 up 3ã£ã¦ã‚„ã‚‹ã¨ï¼Œ3ã¤ä¸Šã«è¡Œãã®ã‚’ä½œã£ãŸï¼Ž function up() { i=0 while [ $i -lt $1 ] do cd ../ i=`expr $i + 1` done } ä½¿ã„æ–¹ % pwd /Users/fkd/co/dev/dotfiles % up 3 % pwd /Users/fkd %ã“ã‚Œã¯ä½¿ã„ã«ããã¦ï¼Œcd ../../ã£ã¦æ‰“ã¤ã¨ãã¯ï¼Œã„ãã¤ä¸Šã«è¡Œãã‹è€ƒãˆãªãŒã‚‰ï¼Œ../ã£ã¦æ‰“ã£ã¦ã‚‹ï¼Žã“ã‚Œã ã¨ï¼Œå…ˆã«æ•°ãˆã¦ãŠã‹ãªã„ã¨ã„ã‘ãªãã¦ï¼Œé›£ã—ã‹ã£ãŸï¼Ž ãã®ï¼’ è€ƒãˆãªãŒã‚‰å…¥åŠ›ã§ãã‚‹ã‚ˆã†ã«ã—ã¦ã¿ãŸï¼Žå¼•æ•°ã®æ•°ã ã‘è¦‹ã‚‹ï¼Ž function up() { i=0 while [ $i -lt $# ]
Yamashiro0217 2010/10/02
unix

shell
ãƒªãƒ³ã‚¯
What happens when the root does "rm -rf /" ?
root ãŒ "/bin/rm -rf /" ã‚’ã—ãŸã‚‰ã©ã†ãªã‚‹ã®ã‹ï¼Ÿ last modified: Feb 16, 2000 UNIX ã§ root ãŒ "/bin/rm -rf /" ã‚’ã—ãŸå ´åˆã®çµæœ«ã¨ã—ã¦ã€ ä»¥ä¸‹ã®ã‚ˆã†ã«ãªã‚‹ã¨ã„ã†ä¸»å¼µã‚’å®Ÿéš›ã«è¦‹ãŸã‚Šèžã„ãŸã‚Šã—ãŸã“ã¨ãŒã‚ã‚‹ã®ã§ã™ãŒã€ å…¨ã¦æ˜Žã‚‰ã‹ã«èª¤ã‚Šã§ã™ã€‚ ä¿¡ã˜ã¦ã¯ã„ã‘ã¾ã›ã‚“ã€‚ /bin/rm ãŒæ¶ˆãˆãŸæ™‚ç‚¹ã§ã€rm ã®ãƒ—ãƒã‚»ã‚¹è‡ªä½“ãŒç•°å¸¸çµ‚äº†ã™ã‚‹ã€‚ ï¼ˆãªã‚“ã§ã‚„ãã‚“ï¼ ...ã¾ã‚ã€SVR2, 4.1BSD ã§ã¯ /bin/rmdir ãŒæ¶ˆãˆãŸã‚‰æ¢ã¾ã‚‹ã¨æ€ã†ã‘ã©ã€‚ï¼‰ dynamic library ãŒæ¶ˆãˆãŸå¾Œã« rm ã®ãƒ—ãƒã‚»ã‚¹ã‚„å‹•ä½œä¸ã®ã‚³ãƒžãƒ³ãƒ‰ãŒ ç•°å¸¸çµ‚äº†ã™ã‚‹ã€‚ ï¼ˆãªã‚“ã§ã‚„ãã‚“ï¼ï¼‰ ãã‚Œã¾ã§å‹•ã„ã¦ã„ãŸã‚³ãƒžãƒ³ãƒ‰ï¼ˆãƒ‡ãƒ¼ãƒ¢ãƒ³é¡žï¼‰ãŒã€ ã‚³ãƒžãƒ³ãƒ‰ãƒ•ã‚¡ã‚¤ãƒ«ãŒæ¶ˆãˆãŸå¾Œã«çµ‚äº†ã™ã‚‹ã€‚ ï¼ˆãªã‚“ã§ã‚„ãã‚“ï¼ï¼‰ ã‚«ãƒ¼ãƒãƒ«ãŒ unlink(2) ã•ã‚ŒãŸæ™‚ç‚¹ã§ã€ã‚·ã‚¹ãƒ†ãƒ ãŒ
Yamashiro0217 2009/02/10
ãƒˆãƒ©ã‚¦ãƒž

linux

unix
ãƒªãƒ³ã‚¯
Unixã‚³ãƒžãƒ³ãƒ‰ç”Ÿæ´»å®Ÿè·µ — ã‚ã‚Šãˆã‚‹ãˆã‚Šã‚
ãƒ‡ã‚£ãƒ¬ã‚¯ãƒˆãƒªæ“ä½œ lsã®ä½¿ã†ã‚ªãƒ—ã‚·ãƒ§ãƒ³ ...-l,-a,-F,-i # ãƒ‡ã‚£ãƒ¬ã‚¯ãƒˆãƒªã‚’ã™ã¹ã¦æ¶ˆã™å ´åˆ(å…ˆé ã®\ã¯å¾Œè¿°) \rm -rf ãƒ‡ã‚£ãƒ¬ã‚¯ãƒˆãƒªå # å…¨éƒ¨ã‚³ãƒ”ãƒ¼ cp -ar srcdir destdir ...-aã¯GNU lsã®ã‚ªãƒ—ã‚·ãƒ§ãƒ³ # cp -aãŒã©ã“ã¾ã§ä¿¡ç”¨ã§ãã‚‹ã‹ä¸æ˜Žã€ã‚ã‚‹ã„ã¯GNU lsãŒãªã„æ™‚ã«ã€ä½¿ã†ãƒ†ã‚¯ãƒ‹ãƒƒã‚¯ tar cf - srcdir | (cd /destdir; tar xf -) ãƒ•ã‚¡ã‚¤ãƒ«æ“ä½œ(ãƒªãƒ³ã‚¯) ãƒãƒ¼ãƒ‰ãƒªãƒ³ã‚¯ vs. ã‚·ãƒ³ãƒœãƒªãƒƒã‚¯ãƒªãƒ³ã‚¯ ln #ãƒãƒ¼ãƒ‰ãƒªãƒ³ã‚¯ ...ç•°ãªã‚‹ãƒ•ã‚¡ã‚¤ãƒ«åã§åŒä¸€ã®i-nodeã‚’å…±æœ‰(ls -iã§ç¢ºèªå¯èƒ½) ln -s #ã‚·ãƒ³ãƒœãƒªãƒƒã‚¯ãƒªãƒ³ã‚¯ ...ãƒã‚¤ãƒ³ã‚¿ æ³¨æ„ç‚¹ ãƒãƒ¼ãƒ‰ãƒªãƒ³ã‚¯ã¯å¯¾ç§°(ln a bã§ã‚‚ãƒ•ã‚¡ã‚¤ãƒ«aã¨bã«ä¸»å¾“é–¢ä¿‚ã¯ãªã„) i-nodeã¯ãƒ‡ãƒã‚¤ã‚¹(dfã§è¦‹ãˆã‚‹ãƒ‡ã‚£ã‚¹ã‚¯ãƒ‡ãƒã‚¤ã‚¹)ã§ä¸€æ„ãªã®ã§ã€ãƒ‡ãƒã‚¤ã‚¹ã‚’è¶Šãˆã¦
Yamashiro0217 2008/11/28
unix
ãƒªãƒ³ã‚¯
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Upstart - Wikipedia

Ken Thompsonæ° | ãˆã³ã‚ã‚‚(2004-04-13)

ä¸Šã«è¡Œãcdä½œã£ãŸ - hitode909ã®æ—¥è¨˜

What happens when the root does "rm -rf /" ?

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