[B! bash] aki77ã®ãƒ–ãƒƒã‚¯ãƒžãƒ¼ã‚¯

aki77 id:aki77

bashã«é–¢ã™ã‚‹aki77ã®ãƒ–ãƒƒã‚¯ãƒžãƒ¼ã‚¯ (15)

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Bashã‚¢ãƒ—ãƒªã‚±ãƒ¼ã‚·ãƒ§ãƒ³ã‚’ãƒ†ã‚¹ãƒˆã™ã‚‹ | POSTD
ä»¥å‰ã€bashã‚¹ã‚¯ãƒªãƒ—ãƒˆã‚’ãƒ†ã‚¹ãƒˆã™ã‚‹ä»•äº‹ã«å–ã‚Šçµ„ã‚“ã ã“ã¨ãŒã‚ã‚Šã¾ã™ã€‚æœ€åˆã€Pythonãƒ¦ãƒ‹ãƒƒãƒˆãƒ†ã‚¹ãƒˆã‚’ä½¿ã†ã“ã¨ã«ã—ã¾ã—ãŸãŒã€ãƒ—ãƒã‚¸ã‚§ã‚¯ãƒˆã«å¤–éƒ¨æŠ€è¡“ã‚’æŒã¡è¾¼ã‚€ã®ã¯æ°—ãŒé€²ã¿ã¾ã›ã‚“ã§ã—ãŸã€‚ãã“ã§ã€ä»•æ–¹ãªãã€æ‚ªåé«˜ã„ bash ã§æ›¸ã‹ã‚ŒãŸãƒ†ã‚¹ãƒˆç”¨ãƒ•ãƒ¬ãƒ¼ãƒ ãƒ¯ãƒ¼ã‚¯ã‚’ä½¿ã„ã¾ã—ãŸã€‚ æ—¢å˜ã‚½ãƒªãƒ¥ãƒ¼ã‚·ãƒ§ãƒ³ã®æ¦‚è¦ æ‰‹ã«å…¥ã‚‹ã‚½ãƒªãƒ¥ãƒ¼ã‚·ãƒ§ãƒ³ã‚’æŽ¢ã—ã¦Googleæ¤œç´¢ã—ã¾ã—ãŸãŒã€é¸æŠžè‚¢ã¯ã»ã‚“ã®å°‘ã—ã—ã‹ã‚ã‚Šã¾ã›ã‚“ã§ã—ãŸã€‚ãã®ã†ã¡ã„ãã¤ã‹ã«ã¤ã„ã¦ã€è©³ã—ãè¦‹ã¦ã„ãã¾ã—ã‚‡ã†ã€‚ é‡è¦ã«ãªã‚‹ã®ã¯ã€ã©ã‚“ãªåŸºæº–ã§ã—ã‚‡ã†ã‹ï¼Ÿ ä¾å˜é–¢ä¿‚ï¼š bass ã®ãƒ†ã‚¹ãƒˆç”¨ãƒ•ãƒ¬ãƒ¼ãƒ ãƒ¯ãƒ¼ã‚¯ã‚’é¸ã¶ã¨ãã«ã€ python ã€ lua ãªã©ã®ã‚·ã‚¹ãƒ†ãƒ ãƒ‘ãƒƒã‚±ãƒ¼ã‚¸ã‚‚ä¸€ç·’ã«å¼•ããšã‚Šè¾¼ã‚€ã®ã¯å«Œã§ã™ãã€‚ ã‚¤ãƒ³ã‚¹ãƒˆãƒ¼ãƒ«ã®é›£ã—ã•ï¼šç¶™ç¶šçš„ãªé–‹ç™ºã®å®Ÿè£…ã¨Travis CIã§ã®ç¶™ç¶šçš„ãªçµ±åˆã‚‚ä»•äº‹ã®1ã¤ã ã£ãŸã®ã§ã€ç§ã«ã¨ã£ã¦ã‚¤ãƒ³ã‚¹ãƒˆãƒ¼ãƒ«ã«ã‹ã‹ã‚‹æ™‚é–“ã¨æ‰‹é–“æ•°ãŒå¦¥å½“ã ã¨ã„ã†ã“ã¨ã¯ã€é‡è¦
aki77 2017/09/07
bash

test
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BASHã®è„†å¼±æ€§ã§CGIã‚¹ã‚¯ãƒªãƒ—ãƒˆã«ã‚¢ãƒ¬ã•ã›ã¦ã¿ã¾ã—ãŸ
ç’°å¢ƒå¤‰æ•°ã«ä»•è¾¼ã¾ã‚ŒãŸã‚³ãƒ¼ãƒ‰ã‚’å®Ÿè¡Œã—ã¦ã—ã¾ã†BASHã®è„†å¼±æ€§ãŒ CGIã‚¹ã‚¯ãƒªãƒ—ãƒˆã«å½±éŸ¿ã‚’ä¸Žãˆã‚‹ã‹è©¦ã—ã¦ã¿ãŸã‚‰çµæžœã¯æ‚²æƒ¨ãªæ„Ÿã˜ã« Tweet 2014å¹´9æœˆ25æ—¥ å¶‹ç”°å¤§è²´ ã“ã®è¨˜äº‹ã¯2014å¹´ã®ã‚‚ã®ã§ã™ æœã‹ã‚‰ Bash specially-crafted environment variables code injection attack ãªã‚‹ã‚‚ã®ã§é¨’ãŽã«ãªã£ã¦ã„ãŸã®ã§ã€ã•ã£ããæ‰‹å…ƒã® Apacheã§è©¦ã—ã¦ã¿ã¾ã—ãŸã€‚ /hoge.cgiã¨ã„ã†URIã§å®Ÿè¡Œã•ã‚Œã‚‹ã‚ˆã†ã«ã€ä¸€è¡Œã®ãƒ¡ãƒƒã‚»ãƒ¼ã‚¸ã‚’å‡ºåŠ›ã™ã‚‹ã ã‘ã® CGIã‚¹ã‚¯ãƒªãƒ—ãƒˆã‚’è¨ç½®ã—ã¾ã™ã€‚ã„ã£ã‘ã‚“ã€ãªã‚“ã®å…¥åŠ›ã‚‚ã‚¯ãƒ©ã‚¤ã‚¢ãƒ³ãƒˆå´ã‹ã‚‰å—ã‘ä»˜ã‘ã¦ã„ãªã„ãŸã‚å±é™ºã®ã‚ã‚Šã‚ˆã†ã‚‚ãªãè¦‹ãˆã¾ã™ã€‚ #!/bin/sh echo "Content-type: text/plain" echo echo "Hi! I'm an ordinary CGI script w
aki77 2014/09/27
bash

security
ãƒªãƒ³ã‚¯
ã‚¦ã‚§ãƒ–ã‚¢ãƒ—ãƒªã«ãŠã‘ã‚‹Bashè„†å¼±æ€§ã®å³æ»æ¡ä»¶ #ShellShock - ã‚ã‚‚ãŠãã°
æ¡ä»¶1. /bin/shã®å®Ÿä½“ãŒbashã®ãƒ‡ã‚£ã‚¹ãƒˆãƒªãƒ“ãƒ¥ãƒ¼ã‚·ãƒ§ãƒ³ RHEL CentOS Scientific Linux Fedora Amazon Linux openSUSE Arch Linux (è‡ªã‚‰è¨å®šã—ãŸå ´åˆ: Debian, Ubuntu) æ¡ä»¶2. å‹•ä½œç’°å¢ƒ CGI (ãƒ¬ãƒ³ã‚¿ãƒ«ã‚µãƒ¼ãƒã§ã‚ã‚ŠãŒã¡ãªCGIãƒ¢ãƒ¼ãƒ‰ã®PHPç‰ã‚‚å«ã‚€) Passenger(Ruby) æ¡ä»¶3. ãƒ—ãƒã‚°ãƒ©ãƒ å†…å®¹ Passengerã¯å…¨æ»äº¡ *1 systemã‚„ `command`ã€ '| /usr/lib/sendmail' ãªã©ã§å¤–éƒ¨ã‚³ãƒžãƒ³ãƒ‰å®Ÿè¡Œ *2 PHPã®mailã‚„mb_send_mailã€ãã®ä»–ãƒ•ãƒ¬ãƒ¼ãƒ ãƒ¯ãƒ¼ã‚¯ç‰ã‚’ä»‹ã—ãŸãƒ¡ãƒ¼ãƒ«é€ä¿¡ *3 ä»¥ä¸‹ã¯æ¡ä»¶1ãŒä¸è¦ æ˜Žç¤ºçš„ã«bashã‚’å‘¼ã¶ å…ˆé ã§ #!/bin/bash ã‚„ #!/usr/bin/env bash ã—ã¦ã„ã‚‹ãƒ—ãƒã‚°ãƒ©ãƒ ã‚’å®Ÿè¡Œ (rbenv
aki77 2014/09/27
bash

security
ãƒªãƒ³ã‚¯
bashã‚¤ãƒ‡ã‚£ã‚ªãƒ ã€ãƒ¯ãƒ³ãƒ©ã‚¤ãƒŠãƒ¼ãƒ«ãƒ¼ãƒ—ã¨è¨å®šãƒ•ã‚¡ã‚¤ãƒ«èªã¿è¾¼ã¿ - ã¶ã‚ã
bashãƒ¯ãƒ³ãƒ©ã‚¤ãƒŠãƒ¼ãƒ«ãƒ¼ãƒ—ã‚ã‚Œã“ã‚Œ ãƒ¯ãƒ³ãƒ©ã‚¤ãƒŠãƒ¼ã§ãƒ«ãƒ¼ãƒ—ã‚’æ›¸ã„ã¦ã€ãƒ—ãƒã‚»ã‚¹ã‚’ç›£è¦–ã™ã‚‹ã¨ã‹ãã†ã„ã†ã®ã‚’ã€Œãƒ‘ãƒ‘ãƒƒã€ã¨æ›¸ã‘ã‚‹ã¨è‰²ã€…ã¨æ—ã‚‹ ã‚ã‚‹ç¯„å›²ã§ãƒ«ãƒ¼ãƒ—ã™ã‚‹ã¨ã for i in $(seq 1 10) ; do dig -t TXT domain-hoge-${i}.com ; done $(seq 1 10)ã§1 2 3 4 5 6 7 8 9 10ã®ãƒªã‚¹ãƒˆã‚’ä½œã‚Œã‚‹ã¨ã“ã‚ã«ç€ç›®ã€‚Perlã§è¨€ã†ã¨ã“ã‚ã®ã€for(1..10)çš„ãªã“ã¨ã‚’å‡ºæ¥ã‚‹ã®ã‚’æ°—ã«å…¥ã£ã¦ã„ã‚‹ã€‚ã‚ã¾ã‚Šã‚³ãƒ¼ãƒ‰ã‚’æ›¸ããŸããªã„é¢å€’ãã•ãŒã‚Šå±‹ã¨ã—ã¦ã¯ã€‚ for i in {1..10} ; do dig -t TXT domain-hoge-${i}.com ; done ã¨ã‹æ€ã£ã¦ã„ãŸã‘ã©ã€$(seq 1 10) ã‚ˆã‚Š{1..10}ã®ã»ã†ãŒæ¸‹ã„ï¼ ç„¡é™ãƒ«ãƒ¼ãƒ—ã™ã‚‹ã¨ã while : ; do i=$((i+1)) ; echo en
aki77 2013/08/22
bash
ãƒªãƒ³ã‚¯
Linuxä¸Šã§ã‚·ã‚§ãƒ«ãŒå®Ÿè¡Œã•ã‚Œã‚‹ä»•çµ„ã¿ã‚’ï¼Œä½“ç³»çš„ã«ç†è§£ã—ã‚ˆã†ã€€ï¼ˆbash ä¸ç´šè€…ã¸ã®é“ï¼‰ - ä¸»ã«è¨€èªžã¨ã‚·ã‚¹ãƒ†ãƒ é–‹ç™ºã«é–¢ã—ã¦
ãƒãƒƒãƒã®ã¾ã¨ã‚TOPã¸ bash åˆç´šè€…ã¯ï¼Œç°¡å˜ãªã‚³ãƒžãƒ³ãƒ‰ãŒä¸¦ã‚“ã ã ã‘ã®å°ã•ãªã‚¹ã‚¯ãƒªãƒ—ãƒˆã‚’æ›¸ãã“ã¨ãŒã§ãã‚‹ã€‚ ã—ã‹ã—ã‚·ã‚§ãƒ«ã®å‹•ä½œåŽŸç†ã‚’ã‚ˆãç†è§£ã—ã¦ãŠã‚‰ãšï¼Œ ä¸€æ©é€²ã‚“ã ã“ã¨ã‚’ã‚„ã‚ã†ã¨ã™ã‚‹ã¨ã¤ã¾ãšãã€‚ ã‚·ã‚§ãƒ«ã‚¹ã‚¯ãƒªãƒ—ãƒˆã®ä¸ç´šè€…ã«ãªã‚‹ãŸã‚ã«ã¯ï¼Œ Linuxä¸Šã§ã‚·ã‚§ãƒ«ãŒå‹•ä½œã™ã‚‹ä»•çµ„ã¿ã‚’ä½“ç³»çš„ã«ç†è§£ã—ã¦ãŠãå¿…è¦ãŒã‚ã‚‹ã€‚ ï¼ˆï¼‘ï¼‰ ã‚·ã‚§ãƒ«ã¨ã‚³ãƒžãƒ³ãƒ‰ã«ã¤ã„ã¦ ï¼ˆï¼‘âˆ’ï¼‘ï¼‰ ã‚·ã‚§ãƒ«ã¨ã¯ï¼ŒOSã«å‘½ä»¤ã‚’å‡ºã™ãŸã‚ã«ï¼ŒOSã‚’åŒ…ã‚“ã§ã„ã‚‹å¤–è†œã§ã‚ã‚‹ã€‚ ï¼ˆï¼‘âˆ’ï¼’ï¼‰ Linuxãƒã‚°ã‚¤ãƒ³æ™‚ã«ã¯ï¼Œãã®ãƒ¦ãƒ¼ã‚¶ç”¨ã®ãƒã‚°ã‚¤ãƒ³ã‚·ã‚§ãƒ«ãŒèµ·å‹•ã™ã‚‹ã€‚ ï¼ˆï¼‘âˆ’ï¼“ï¼‰ ãƒ¦ãƒ¼ã‚¶ãŒæ‰“ã¡è¾¼ã‚“ã ã‚³ãƒžãƒ³ãƒ‰ã¯ï¼Œå®Ÿè¡Œå‰ã«ï¼Œbashã«ã‚ˆã£ã¦æ•´å½¢ã•ã‚Œã‚‹ã€‚ ï¼ˆï¼‘âˆ’ï¼”ï¼‰ ã‚³ãƒžãƒ³ãƒ‰ã®å…ˆé ã®æ–‡å—åˆ—ã¯ï¼Œå®Ÿè¡Œå¯èƒ½ãƒ•ã‚¡ã‚¤ãƒ«ã‹ï¼Œã¾ãŸã¯bashã®çµ„ã¿è¾¼ã¿ã‚³ãƒžãƒ³ãƒ‰ã§ã‚ã‚‹ã€‚ ï¼ˆï¼’ï¼‰ ã‚³ãƒžãƒ³ãƒ‰é–“ã®é€£æºã«ã¤ã„ã¦ ï¼ˆï¼’âˆ’ï¼‘ï¼‰ ã‚³ãƒžãƒ³ãƒ‰å‘¼ã³å‡ºã—ã¨ã¯ï¼Œã‚µãƒ–ãƒ—ãƒã‚»ã‚¹ã®ç”Ÿæˆã§ã‚ã‚‹ã€‚ ï¼ˆï¼’âˆ’ï¼’ï¼‰ è¦ªãƒ—ãƒ
aki77 2013/05/22
shell

bash

linux
ãƒªãƒ³ã‚¯
Bash One-Liners Explained, Part III: All about redirections
This is the third part of the Bash One-Liners Explained article series. In this part I'll teach you all about input/output redirection. I'll use only the best bash practices, various bash idioms and tricks. I want to illustrate how to get various tasks done with just bash built-in commands and bash programming language constructs. See the first part of the series for introduction. After I'm done w
aki77 2012/10/29
ãƒªãƒ€ã‚¤ãƒ¬ã‚¯ãƒˆ

bash
ãƒªãƒ³ã‚¯
GitHub - pkrumins/bash-redirections-cheat-sheet: Bash redirections cheat sheet
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aki77 2012/10/29
bash

cheatsheet
ãƒªãƒ³ã‚¯
zshä½¿ã„ãªã‚‰åŠ¹çŽ‡æ”¹å–„ã®ãŸã‚çŸ¥ã£ã¦ãŠããŸã„AUTOJUMP - Glide Note
joelthelion/autojump - GitHub zshè£œå®Œé–¢æ•°ã®æ›¸ãæ–¹ã‚’ã„ã‚ã„ã‚èª¿ã¹ã¦ã„ãŸã‚‰ã€autojump-zshã¨ã„ã†ãƒ‘ãƒƒã‚±ãƒ¼ã‚¸ã‚’ç™ºè¦‹ã€‚ æ°—ã«ãªã£ã¦ä½¿ã£ã¦ã¿ãŸã‚‰ã‚ã¡ã‚ƒãã¡ã‚ƒä¾¿åˆ©ã§ã€ä¹…ã€…ã«æ„Ÿå‹•ã—ãŸã®ã§ç´¹ä»‹ã€‚ autojumpã¯cdã‚³ãƒžãƒ³ãƒ‰ã®æ‹¡å¼µçš„ãªã‚³ãƒžãƒ³ãƒ‰ã§ã€ç§»å‹•ã—ãŸãƒ‡ã‚£ãƒ¬ã‚¯ãƒˆãƒªã‚’è¨˜éŒ²ã—ã€ ãƒ‡ã‚£ãƒ¬ã‚¯ãƒˆãƒªé–“ã‚’è¡Œã£ãŸã‚Šæ¥ãŸã‚Šã™ã‚‹ã¨ãã«çµ¶å¤§ãªåŠ¹æžœã‚’ç™ºæ®ã—ã¾ã™ã€‚ å…¬å¼wikiã«æ›¸ã„ã¦ã‚ã‚‹ã‚ˆã† ã‚³ãƒžãƒ³ãƒ‰ãƒ©ã‚¤ãƒ³ä½œæ¥ã®10ã€œ20%ã¯cdã‚³ãƒžãƒ³ãƒ‰ã®ãŸã‚ã€ãƒ‡ã‚£ãƒ¬ã‚¯ãƒˆãƒªç§»å‹•ã®å‹•ä½œãŒ æ”¹å–„ã™ã‚‹ã¨å¿…ç„¶çš„ã«ä½œæ¥åŠ¹çŽ‡ã‚‚å‘ä¸Šã™ã‚‹ã¨ã„ã†ã“ã¨ã§ã™ã€‚ å®Ÿéš›ç§ã‚‚autojumpã‚’ä½¿ã„å‡ºã—ã¦ã‹ã‚‰ã€ä½œæ¥åŠ¹çŽ‡ãŒä¸ŠãŒã‚Šã¾ã—ãŸã€‚ ãã‚Œã§ã¯æ—©é€Ÿautojumpã®èª¬æ˜Žã‚’ã€‚å‹•ä½œæ¤œè¨¼ç’°å¢ƒã¯ä¸‹è¨˜ã§ã™ã€‚ Mac OSX 10.7.3 Fedora 16 Scientifix Linux 6.1 å°Žå…¥æ–¹æ³• autojumpã‚’åˆ©ç”¨ã™ã‚‹ã«
aki77 2012/02/29
zsh

bash
ãƒªãƒ³ã‚¯
Bashã®å¤‰æ•°ãƒ‘ãƒ©ãƒ¡ãƒ¼ã‚¿å±•é–‹ã®ã¾ã¨ã‚ - harryâ€™s memorandum
Bashã®ãƒ‘ãƒ©ãƒ¡ãƒ¼ã‚¿å±•é–‹ã¯ã™ãã«å¿˜ã‚Œã¦ã—ã¾ã†ã®ã§ãƒ¡ãƒ¢ã€‚ å¤‰æ•°ã®æ–‡å—æ•° ${#parameter}ã§å¤‰æ•°ã®æ–‡å—æ•°ã‚’èª¿ã¹ã‚‹ã“ã¨ãŒã§ãã¾ã™ã€‚ name=/var/log/boot.log echo ${#name} 17 wcã‚„awkã‚³ãƒžãƒ³ãƒ‰ã‚’ä½¿ã†æ–¹æ³•ãŒã‚ã‚Šã¾ã™ãŒã‚¹ãƒžãƒ¼ãƒˆã§ã¯ã‚ã‚Šã¾ã›ã‚“ã€‚*1 $ n=`echo $name | wc -c`; echo $(($n-1)) 17 $ echo $name | awk '{ print length($0)}' 17 é…åˆ—ã‚‚åŒã˜ã‚ˆã†ã«é…åˆ—æ•°ã‚’èª¿ã¹ã‚‹ã“ã¨ãŒã§ãã¾ã™ã€‚ $ array=(a b c d e) $ echo ${array[0]} a $ echo ${#array[@]} 5 å¤‰æ•°ãƒ‘ãƒ©ãƒ¡ãƒ¼ã‚¿å±•é–‹ å¤‰æ•°ã‚’åˆ‡ã‚Šå‡ºã›ã¾ã™ã€‚ãƒ•ã‚¡ã‚¤ãƒ«åã‚„ãƒ‡ã‚£ãƒ¬ã‚¯ãƒˆãƒªåã‚’ç°¡å˜ã«åˆ‡ã‚Šå‡ºã™ã“ã¨ãŒã§ãã¾ã™ã€‚ $ name=/var/log/boot.log $ echo
aki77 2011/10/24
bash
ãƒªãƒ³ã‚¯
bash ã® $(( )) ã¨ expr ã¯ã©ã“ãŒé•ã†ï¼Ÿ
cles::blog å¹³å¸¸å¿ƒæ˜¯é“ blogs: cles::blog NP_cles() Â« cles::blog ï¼—å‘¨å¹´ :: ã‚»ã‚ãƒ¥ãƒªãƒ†ã‚£æ‹…å½“è€…ã®ãŸã‚ã®è„†å¼±æ€§å¯¾å¿œã‚¬ã‚¤ãƒ‰ Â» 2011/02/28 bash ã® $(( )) ã¨ expr ã¯ã©ã“ãŒé•ã†ï¼ŸÂ sh 458 2ã¸ã‡ bashã§ã¡ã‚‡ã£ã¨ã—ãŸæ•°å€¤ã®æ¼”ç®—ã‚’ã™ã‚‹ã¨ãã¯ $(( )) ã‹ã€ expr ã‚’ä½¿ã†ã®ãŒå®šçŸ³ã¨æ€ã†ã®ã§ã™ãŒã€ä»Šæ—¥ã¾ã§ã“ã®ï¼’ã¤ã«æŒ™å‹•ã®é•ã„ãŒã‚ã‚‹ã¨ã„ã†ã“ã¨ã‚’çŸ¥ã‚Šã¾ã›ã‚“ã§ã—ãŸã€‚ å‰è€…ã¯0ã§å§‹ã¾ã‚‹æ•°å€¤ã‚’å—ã‘å–ã‚‹ã¨ã€8é€²æ•°ãƒªãƒ†ãƒ©ãƒ«ã¨è§£é‡ˆã—ã¦ã—ã¾ã†ã‚ˆã†ã§ã€å€¤ãŒåŸºæ•°ã‚ˆã‚Šã‚‚å¤§ãã„ã¨ã„ã†ã€Œvalue too great for baseã€ã¨ã„ã†ã‚¨ãƒ©ãƒ¼ã‚’åãã¾ã™ãŒã€å¾Œè€…ã«ã¯ã“ã®ã‚ˆã†ãªæ©Ÿèƒ½ãŒãªã„ã‚ˆã†ã§ã€0ã‹ã‚‰å§‹ã¾ã‚‹æ•°å€¤ã§ã‚ã£ã¦ã‚‚10é€²æ•°ã§è§£é‡ˆã•ã‚Œã¦ã„ã¾ã™ã€‚ã‚‚ã—ã‚„ã¨æ€ã£ã¦å®Ÿé¨“ã—ã¦ã¿ã¾ã—ãŸãŒã€16é€²æ•°ã‚‚ã„ã‘ã‚‹ã‚ˆã†ã§ã™ã€‚ä¾‹ãˆã°ã“ã‚“ãªæ„Ÿã˜ã€‚
aki77 2011/03/01
bash
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aki77 2010/01/31
bash

programming

shellscript
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aki77 2009/12/26
bash

linux
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aki77 2009/05/15
è£œå®Œ, completion

pear

bash
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aki77 2008/10/23
bash

shell

linux
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aki77 2006/07/15
linux

bash
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