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takahiroki id:takahiroki

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2ã¤ã®ãƒ†ã‚ã‚¹ãƒˆãƒ•ã‚¡ã‚¤ãƒ«ã‚’ join ã‚³ãƒžãƒ³ãƒ‰ã§çµåˆã™ã‚‹ - Qiita
$ join -t, a.txt b.txt 200,b,x ï¼ˆæ˜Žç¤ºçš„ã«ã—ãŸå ´åˆï¼‰ $ join -t, -1 1 -2 1 -o 0 1.2 2.2 a.txt b.txt 200,b,x -tã¯ï¼Œãƒ‡ãƒªãƒŸã‚¿ï¼ˆåŒºåˆ‡ã‚Šæ–‡å—ï¼‰ã§ã™ï¼Ž-1, -2 ã¯çµåˆã®æ¡ä»¶ã§ï¼ŒSQLã§ã„ã† INNER JOIN ON ã€œ ã®æ¡ä»¶å¼ã«ã‚ãŸã‚Šã¾ã™ï¼Ž-1 ã¯ï¼Œa.txt ã§ã‚ãƒ¼ã¨ã™ã‚‹åˆ—ï¼Œ-2 ã¯b.txtã§ã‚ãƒ¼ã¨ã™ã‚‹åˆ—ã§ã™ï¼Ž -o ã¯å‡ºåŠ›ã™ã‚‹åˆ—ç•ªå·ã‚’æŒ‡å®šã—ã¾ã™ï¼Ž1.2 ã¯1ã¤ç›®ã®ãƒ•ã‚¡ã‚¤ãƒ«ï¼ˆa.txtï¼‰ã®2åˆ—ç›®ã‚’è¡¨ç¤ºã›ã‚ˆã¨ã„ã†æ„å‘³ã«ãªã‚Šã¾ã™ï¼Ž0 ã‚’æŒ‡å®šã™ã‚‹ã¨joinæ¡ä»¶ã¨ã—ãŸã‚ãƒ¼ã‚’è¡¨ç¤ºã—ã¾ã™ï¼Ž å¤–éƒ¨çµåˆï¼ˆLEFT OUTER JOINï¼‰ å†…éƒ¨çµåˆã§ãã‚‹ãªã‚‰å¤–éƒ¨çµåˆã‚‚ã‚‚ã¡ã‚ã‚“ã§ãã¾ã™ï¼Ž
takahiroki 2016/06/22
å®Œå…¨å¤–éƒ¨çµåˆ(full outer join) ã‚‚ã§ãã‚‹ã‚ˆï¼

unix
ãƒªãƒ³ã‚¯
ssh-env - sshå®Ÿè¡Œæ™‚ã«ç’°å¢ƒå¤‰æ•°ã‚’è¨å®š/å¤‰æ›´ã—ãŸã„ - spikelet days
ç›®çš„ sshã§ãƒªãƒ¢ãƒ¼ãƒˆãƒ›ã‚¹ãƒˆã§ã‚³ãƒžãƒ³ãƒ‰ã‚’å®Ÿè¡Œã™ã‚‹ã¨ãã«ã€PATHã‚„ãã®ä»–ã®ç’°å¢ƒå¤‰æ•°ã‚’è¨å®šã—ã¦å®Ÿè¡Œã—ãŸã„ã€‚ ä¾‹ãˆã°ã€å‹æ‰‹ã«ã‚³ãƒžãƒ³ãƒ‰ã®ãƒãƒ¼ã‚¸ãƒ§ãƒ³ã‚¢ãƒƒãƒ—ãŒã§ããªã„é‡è¦ãªã‚µãƒ¼ãƒã§ã€è‡ªåˆ†ã®ãƒ›ãƒ¼ãƒ ä»¥ä¸‹ã«ã‚¤ãƒ³ã‚¹ãƒˆãƒ¼ãƒ«ã—ãŸã‚³ãƒžãƒ³ãƒ‰ã‚’sshçµŒç”±ã§å®Ÿè¡Œã—ãŸã„ã®ã ãŒã€PATHãŒ/usr/local/binãªã©ã«ã—ã‹é€šã£ã¦ã„ãªãã¦å›°ã£ã¦ã„ã‚‹ã€‚ çµæžœ sshdã®è¨å®šå¤‰æ›´ (PermitUserEnvironment=yes)ã€sshdå†èµ·å‹• ~/.ssh/environment ã«ç’°å¢ƒå¤‰æ•°ã‚’æ›¸ã (VAR=VAL å½¢å¼ã§ä¸€è¡Œä¸€å¤‰æ•°ã§) â€» "~" ã‚„ "$" ã®ç½®æ›ã¯ã—ã¦ãã‚Œãªã„ã®ã§ã€PATHã‚’æ›¸ãã¨ãã¯ãƒ•ãƒ«ãƒ‘ã‚¹ã§æ›¸ãã“ã¨ã€‚ â€» ~/.ssh/rc ã«æ›¸ã„ã¦ã‚‚ãƒ€ãƒ¡ã§ã™ ä»¥ä¸‹ã€è©³ç´°ã€‚ sshã®manã«ã‚ˆã‚‹ã¨â€¦ sshd(8)ã® "LOGIN PROCESS" ã®é …ç›®ã«ã‚ˆã‚‹ã¨ã€sshã§ãƒã‚°ã‚¤ãƒ³ã—ãŸæ™‚ã®å‡¦ç†é †åºã¯ã€ä»¥ä¸‹:
takahiroki 2016/06/07
ssh

unix
ãƒªãƒ³ã‚¯
Super Technique è¬›åº§ã€œã‚·ã‚°ãƒŠãƒ«ã¨ã‚³ãƒ¼ãƒ«ãƒãƒƒã‚¯
ã“ã®æ–‡æ›¸ã§ã¯ã¾ãšã€é–¢æ•°ãƒã‚¤ãƒ³ã‚¿ã¨ãã®åž‹ãƒã‚§ãƒƒã‚¯ã«ã¤ã„ã¦è¿°ã¹ãŸå¾Œã§ã€UNIXã®ã‚·ã‚°ãƒŠãƒ«æ©Ÿèƒ½ã«ã¤ã„ã¦è§£èª¬ã™ã‚‹ã€‚ãã—ã¦ã€ã‚¦ã‚£ãƒ³ãƒ‰ã‚¦ã‚·ã‚¹ãƒ†ãƒ ã®ãƒ—ãƒã‚°ãƒ©ãƒŸãƒ³ã‚°ã§å¤šç”¨ã•ã‚Œã‚‹ã€Œã‚³ãƒ¼ãƒ«ãƒãƒƒã‚¯ã€ã«ã¤ã„ã¦è§£èª¬ã™ã‚‹ã€‚ ã¡ãªã¿ã«ã‚·ã‚°ãƒŠãƒ«ã®æ©Ÿèƒ½ã¯æœ¬è³ªçš„ã«ã¯ UNIX ã«å›ºæœ‰ã§ã‚ã‚‹ã€‚ä»–ã®ï¼¯ï¼³ã«ã‚‚ãªã„ã‚ã‘ã§ã¯ãªã„ãŒã€ãã®ç•°åŒã«ã¤ã„ã¦ã¯ç†è€…ã¯é–¢çŸ¥ã—ãªã„ã€‚ã¾ãŸã€UNIXã§ã®ã‚·ã‚°ãƒŠãƒ«ã®å®Ÿè£…ã«ã¤ã„ã¦ã¯ Linux ã‚’åŸºæº–ã«è§£èª¬ã‚’ã—ã¦ã„ãã€‚UNIX ã‚·ã‚°ãƒŠãƒ«ã¯ã€å®Ÿã¯å…·ä½“çš„ãªå®Ÿè£…ã«ãŠã„ã¦å¤§å¤‰å·®ãŒã‚ã‚‹æ©Ÿèƒ½ãªã®ã ãŒã€ä¸€å¿œ POSIX ã§ã€Œã“ã†å®Ÿè£…ã—ãªã•ã„ã€ã¨ã„ã†é¢¨ã«æ±ºã¾ã£ã¦ã¯ãŠã‚Šã€å¾Œç™ºã® Linux ã¯æ¯”è¼ƒçš„ãƒžã‚¸ãƒ¡ã«ãã‚Œã‚’å®Ÿè£…ã—ã¦ã„ã‚‹ã®ã§ã€ã¾ã‚ã€Linux ã‚’åŸºæº–ã«ã™ã‚‹ã®ãŒç„¡é›£ã¨ã„ã†ã‚‚ã®ã§ã‚ã‚ã†ï¼ˆãƒ¦ãƒ¼ã‚¶æ¯”ã®å•é¡Œã‚’åˆ¥ã«ã—ã¦ã‚‚ï¼‰ã€‚å‹¿è«–ã€ä¼çµ±çš„ã«é‡è¦ãªã„ã‚ã‚†ã‚‹ã€ŒSysVã‚·ã‚°ãƒŠãƒ«ã€ã€ŒBSDã‚·ã‚°ãƒŠãƒ«ã€ã«ã¤ã„ã¦ã‚‚ã—ã£ã‹ã‚Šã¨è§£èª¬ã—ã¦ã„ã‚‹ãŒã€ã‚‚ã¯ã‚„ã€Œ
takahiroki 2016/04/04
unix

signal

posix

os
ãƒªãƒ³ã‚¯
/dev/fd | Advanced Programming in the UNIXÂ® Environment: UNIX File I/O | InformIT
I would like to receive exclusive offers and hear about products from Inform IT and its family of brands. I can unsubscribe at any time. Overview Pearson Education, Inc., 221 River Street, Hoboken, New Jersey 07030, (Pearson) presents this site to provide information about products and services that can be purchased through this site. This privacy notice provides an overview of our commitment to pr
takahiroki 2016/04/03
/dev/fd ã¯ posix ã«ã¯å«ã¾ã‚Œãªã„ã€‚

unix

sh
ãƒªãƒ³ã‚¯
How can I send stdout to multiple commands?
There are some commands which filter or act on input, and then pass it along as output, I think usually to stdout - but some commands will just take the stdin and do whatever they do with it, and output nothing. I'm most familiar with OS X and so there are two that come to mind immediately are pbcopy and pbpaste- which are means of accessing the system clipboard. Anyhow, I know that if I want to t
takahiroki 2016/04/03
pipe ä»¥ä¸Šã«è¤‡é›‘ãªã“ã¨ã‚’ã‚„ã‚ã†ã¨æ€ã£ãŸã‚‰? A. /dev/fd ç³»ãŒåˆ©ç”¨ã§ãã‚‹ãªã‚‰ã€ process_substitution ãŒè‰¯ã•ã’ã€‚ãã‚ŒãŒç„¡ç†ãªã‚‰ã€ named pipe (fifo) ãŒã‚ˆã„ã€‚

unix

sh
ãƒªãƒ³ã‚¯
What characters should be restricted from a Unix file name?
takahiroki 2016/04/01
UNIX ã®ãƒ•ã‚¡ã‚¤ãƒ«åã§ç¦å‰‡æ–‡å—ã¯ï¼Ÿ A. '/' ã¨ '\0' ã®ã¿ã€‚ (PATH ã¨ã‹ã ã¨ : ãŒã€ãã®ä»–ã‚‚ã‚ã‚‚ã‚ã‚‚ã„ã‚ã„ã‚å…¥ã£ã¦ããŸã‚Šã¯ã™ã‚‹ã€‚)

unix
ãƒªãƒ³ã‚¯
What makes a Unix process die with Broken pipe?
takahiroki 2016/03/27
yes ã‚³ãƒžãƒ³ãƒ‰ãŒã€å‡ºåŠ›å…ˆã®ãƒ—ãƒã‚°ãƒ©ãƒ ã®çµ‚äº†ã«å¯¾ã—ã¦ã€ã©ã®ã‚ˆã†ã«åå¿œã™ã‚‹ã‹: æ›¸ãè¾¼ã¿ã‚’è¡ŒãŠã†ã¨ã—ãŸéš›ã«ã€ SIGPIPE ãŒæŠ•ã’ã‚‰ã‚Œã‚‹ã€‚ãã‚Œã‚’æ¤œçŸ¥ã—ã¦ã€çµ‚äº†ã™ã‚‹ã€‚

unix
ãƒªãƒ³ã‚¯
Filesystem Hierarchy Standard
Introduction This page is the home of the Filesystem Hierarchy Standard (FHS). The current version is 2.3. It was announced on January 29, 2004. The filesystem standard has been designed to be used by Unix distribution developers, package developers, and system implementors. However, it is primarily intended to be a reference and is not a tutorial on how to manage a Unix filesystem or directory hi
takahiroki 2016/03/22
fhs

unix
ãƒªãƒ³ã‚¯
/usr/local ã¨ã¯ä½•ãªã®ã‹ - ç ´æ£„ã•ã‚ŒãŸãƒ–ãƒã‚°
ã”ç”¨å¿ƒ: ã“ã®è¨˜äº‹ã‚’éµœå‘‘ã¿ã«ã›ãšã€æœ«å°¾ã«è¨˜è¼‰ã•ã‚ŒãŸä¸€æ¬¡ã‚½ãƒ¼ã‚¹ã‚’ç¢ºèªã—ã¦ãã ã•ã„ã€‚ ã‚½ãƒ¼ã‚¹ã‹ã‚‰ã‚½ãƒ•ãƒˆã‚¦ã‚§ã‚¢ã‚’ãƒ“ãƒ«ãƒ‰ã—ã¦ã‚¤ãƒ³ã‚¹ãƒˆãƒ¼ãƒ«ã™ã‚‹ã¨ãã«ä½¿ã† /usr/local ãƒ‡ã‚£ãƒ¬ã‚¯ãƒˆãƒªã ã‘ã©ã€/opt ãƒ‡ã‚£ãƒ¬ã‚¯ãƒˆãƒªã¨ã®ä½ã¿åˆ†ã‘ã¨ã‹ã€ ãã‚‚ãã‚‚æ¨™æº–ã¯ã©ã†ãªã£ã¦ã„ã‚‹ã®ã‹ã¨ã‹ã€ã¾ã¨ã‚‚ã«çŸ¥ã‚‰ã‚“ã‹ã£ãŸã®ã§ Filesystem Hierarchy Standard ã‚’ç¢ºèªã—ã¦ã¿ãŸã€‚ /usr/local ã¯ä½•ã‚’ã™ã¹ãã¨ã“ã‚ãªã®ã‹ï¼Ÿ ä»–ã®ãƒ›ã‚¹ãƒˆã¨å…±æœ‰ã•ã‚Œãªã„ æ—¢å˜ã®ã‚·ã‚¹ãƒ†ãƒ ã®ç ´å£Šé˜²æ¢ FHS æº–æ‹ ã®ã‚½ãƒ•ãƒˆã‚¦ã‚§ã‚¢ã‚’ã‚¤ãƒ³ã‚¹ãƒˆãƒ¼ãƒ«ã™ã‚‹ /usr/local ãƒ‡ã‚£ãƒ¬ã‚¯ãƒˆãƒªä¸‹è‡ªä½“ãŒ FHS æº–æ‹ ã«ãªã‚‹ /usr/local ãƒ‡ã‚£ãƒ¬ã‚¯ãƒˆãƒªã¯ã€ã‚·ã‚¹ãƒ†ãƒ ç®¡ç†è€…ãŒã‚½ãƒ•ãƒˆã‚¦ã‚§ã‚¢ã‚’ãƒãƒ¼ã‚«ãƒ«ã«ã‚¤ãƒ³ã‚¹ãƒˆãƒ¼ãƒ«ã™ã‚‹ãŸã‚ã«ç”¨ã„ã‚‹ã€‚ /usr/local ãƒ‡ã‚£ãƒ¬ã‚¯ãƒˆãƒªã¨ã—ã¦éš”é›¢ã•ã‚Œã‚‹ãŸã‚ã€åŒåã®ãƒ•ã‚¡ã‚¤ãƒ«åã§æ—¢å˜ã®ãƒ•ã‚¡ã‚¤ãƒ«ã‚’ä¸Šæ›¸ãã™ã‚‹ãªã©ã—ã¦
takahiroki 2016/03/17
/opt, /usr/local ã«ã¤ã„ã¦ã€‚

fhs

unix
ãƒªãƒ³ã‚¯
http://www.bsddiary.net/d/20070119.html
takahiroki 2016/03/12
-> detail: posix ã® terminal definition çš„ãªã¨ã“ã‚ã® EOF ã®èª¬æ˜ŽãŒã€ã¾ã‚“ã¾ã“ã‚Œã€‚

unix
ãƒªãƒ³ã‚¯
Ctrl-D ã®è©± - ã²ã’ã½ã‚“ OSã¨ã‹ä½œã£ã¡ã‚ƒã†ã‹Mona-
Mosh ã® REPL ãŒ Ctrl-D ã§æŠœã‘ã‚‰ã‚Œãªã„ã¨ã”æŒ‡æ‘˜ã„ãŸã ã„ã¦ã„ãŸä»¶ã€‚ ãã‚‚ãã‚‚ Ctrl-D ã£ã¦ä½•ã ã£ã‘ï¼Ÿã¨ç«‹ã¡æ¢ã¾ã‚Šèª¿ã¹ã¾ã—ãŸãŒå½“ãŸã‚Šå‰ã™ãŽã¦(ï¼Ÿ)è¨˜äº‹ã«ã™ã‚‰ãªã£ã¦ãªã„ã®ã§æ›¸ã„ã¦ãŠãã¾ã™ã€‚ ãƒ¦ãƒ¼ã‚¶ãƒ¼ã‹ã‚‰è¦‹ãŸ Ctrl-D å…¥åŠ›çµ‚äº†ã‚’å¯¾è©±åž‹ã®ãƒ—ãƒã‚°ãƒ©ãƒ ã«ã—ã‚‰ã›ã‚‹ã“ã¨ã«ä½¿ã†ã€‚ ä¾‹ãˆã° irb ã‹ã‚‰æŠœã‘ã‚‹ã¨ãã€‚ dekisugi% irb irb(main):001:0> puts "Hello" Hello => nil irb(main):002:0> # Ctrl-D ã§ irb ã‹ã‚‰æŠœã‘ã‚‹ ãã®å¯¾è©±åž‹ãƒ—ãƒã‚°ãƒ©ãƒ ãŒæŒã¤ exit ã‚„ quit ãªã©ã®çµ‚äº†ã‚³ãƒžãƒ³ãƒ‰ã‚’å…¥åŠ›ã™ã‚‹ã‚ˆã‚Šã‚‚æ¥½ã§ã™ãã€‚ äººã«ã‚ˆã£ã¦ã¯ Ctrl-C ã‚’ä½¿ã†å ´åˆã‚‚ã‚ã‚‹ã‹ã‚‚ã—ã‚Œã¾ã›ã‚“ã€‚(ãã®ãƒ—ãƒã‚°ãƒ©ãƒ ãŒ SIGINT ã‚’ã©ã†æ‰±ã£ã¦ã„ã‚‹ã‹ã«ä¾å˜ã™ã‚‹ã®ã§ã€Ctrl-c ã§çµ‚äº†ã—ãªã„å ´åˆã‚‚ã‚ˆãã‚ã‚Šã¾ã™ã€‚) è¿½è¨˜ i
takahiroki 2016/03/12
ãŠãã‚‰ãã€ bash ã¯ã‚³ãƒžãƒ³ãƒ‰å®Ÿè¡Œã®ç›´å‰ã« raw ãƒ¢ãƒ¼ãƒ‰ã‚’è§£é™¤ã—ã¦ã„ã‚‹ã€‚ã§ãªã„ã¨ã€ã„ã‚ã„ã‚èª¬æ˜ŽãŒã¤ã‹ãªã„ã€‚

unix
ãƒªãƒ³ã‚¯
/tmpã‚„/var/tmpã®ãƒ•ã‚¡ã‚¤ãƒ«æ¶ˆãˆã‚‹ã‚¿ã‚¤ãƒŸãƒ³ã‚° - [Linux [Red Hat/CentOSãªã©]/ã‚µãƒ¼ãƒãƒ¼] ãºã‚“ãŸã‚“ info
/tmpãƒ‡ã‚£ãƒ¬ã‚¯ãƒˆãƒªã¯ã€ãƒ†ãƒ³ãƒãƒ©ãƒªãƒ¼(Temporary)ã¤ã¾ã‚Šä¸€æ™‚çš„ãªãƒ•ã‚¡ã‚¤ãƒ«ã‚’ç½®ããŸã‚ã®ãƒ‡ã‚£ãƒ¬ã‚¯ãƒˆãƒªã§ã™ã€‚ ã“ã®ãƒ‡ã‚£ãƒ¬ã‚¯ãƒˆãƒªã®ãƒ•ã‚¡ã‚¤ãƒ«ã¯æ¯Žæ—¥åˆå‰4æ™‚2åˆ†ã«è¡Œã‚ã‚Œã‚‹cronå‡¦ç†(è‡ªå‹•å‡¦ç†)ã®1ã¤ã«ã‚ˆã£ã¦æ¶ˆåŽ»ã•ã‚Œã‚‹ã€‚ [å‚è€ƒ]æ¯Žæœåˆå‰4æ™‚ã«è¡Œã‚ã‚Œã‚‹å‹•ä½œ [å‚è€ƒ] updatedbã«æ™‚é–“ãŒã‹ã‹ã‚‹ã¨ãã®å¯¾å‡¦æ³• å…·ä½“çš„ã«ã¯ã€/etc/cron.daily/tmpwatchã§ã€ Red Hat Linuxã¨Vine Linuxã®å ´åˆã€/etc/cron.daily/tmpwatchã®å†…å®¹ã¯ä»¥ä¸‹ã®é€šã‚Šã§ã™ã€‚ /usr/sbin/tmpwatch 240 /tmp /usr/sbin/tmpwatch 720 /var/tmp for d in /var/{cache/man,catman}/{cat?,X11R6/cat?,local/cat?}; do if [ -d "$d" ]; then /
takahiroki 2016/03/12
ç‰¹å®šæ™‚é–“ã‚¢ã‚¯ã‚»ã‚¹ã•ã‚Œã¦ã„ãªã„ãƒ•ã‚¡ã‚¤ãƒ«ãŒå‰Šé™¤ã•ã‚Œã‚‹

unix
ãƒªãƒ³ã‚¯
/tmpã¨/var/tmpã®ä»ç¾©ç„¡ãæˆ¦ã„ - Qiita
Deleted articles cannot be recovered. Draft of this article would be also deleted. Are you sure you want to delete this article? #èª²é¡Œ /tmpã¨/var/tmpã©ã£ã¡ã‚‚å¤§ä½“ä¸€ç·’ã ã‹ã‚‰ã„ã„ã‚“ã˜ã‚ƒãªã„ã‹ã¨æ€ã£ã¦/tmpã«ãƒ•ã‚¡ã‚¤ãƒ«ã‚’ã¤ãã‚ã†ã¨ã—ãŸã‚‰ã€ãƒ—ãƒã‚°ãƒ©ãƒ ãŒä½¿ç”¨ã™ã‚‹ã‚‚ã®ã¯/var/tmpã«ã¨å±ã‚‰ã‚ŒãŸã€‚ç¢ºã‹ã«ã€åŸºå¹¹ç³»ã‚·ã‚¹ãƒ†ãƒ ã®ãƒ‡ã‚£ã‚¹ãƒˆãƒªãƒ“ãƒ¥ãƒ¼ã‚·ãƒ§ãƒ³ã ã¨ä½•æ•…ã‹/var/tmpæ´¾ã®äººãŒå¤šã‹ã£ãŸæ°—ãŒã™ã‚‹ã€‚ã˜ã‚ƒã‚ã€linuxç³»ç‰¹æœ‰ã®å®—æ´¾ã®å•é¡Œãªã®ã‹ï¼Ÿã¨æ€ã„èª¿ã¹ã¦ã¿ãŸã€‚ #ä½•ãŒä»–ã®ãƒ‡ã‚£ãƒ¬ã‚¯ãƒˆãƒªã¨é•ã†ã‹ é€šå¸¸ã®ãƒ‡ã‚£ãƒ¬ã‚¯ãƒˆãƒªã¯ã€åŸºæœ¬çš„ã«ã¯ãƒ•ã‚¡ã‚¤ãƒ«ã¯å‰Šé™¤ã—ãªã„é™ã‚Šæ¶ˆãˆãªã„ã€‚ /tmpã«é–¢ã—ã¦ã¯å†èµ·å‹•ã™ã‚‹ã¨ãƒ•ã‚¡ã‚¤ãƒ«ãŒç¶ºéº—ã•ã£ã±ã‚Šç„¡ããªã‚‹ã€‚ /var/tmpã¯å†èµ·å‹•ã—ã¦ã‚‚æ¶ˆãˆãªã„ãŒã„
takahiroki 2016/03/12
FHS: tmp ã¯ã€ä¸€å›žã‚¢ãƒ—ãƒªã‚±ãƒ¼ã‚·ãƒ§ãƒ³ãŒçµ‚äº†ã—ãŸã‚‰ã€æ¶ˆãˆã¦ã„ãŸã‚‚æ–‡å¥è¨€ã£ã¦ã¯ã„ã‘ãªã„ã€‚ /var/tmp ã¯ã€å†èµ·å‹•æ™‚ã«æ¶ˆãˆã‚‹ãŒã€ãã‚Œã§ã‚‚ç‰¹å®šã®ãƒãƒªã‚·ãƒ¼ã«å¾“ã£ã¦ clean ã•ã‚Œã‚‹ã€‚

unix
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Need explanation on Resident Set Size/Virtual Size
takahiroki 2016/03/05
ps ã‚³ãƒžãƒ³ãƒ‰ã® VSZ ã¨ RSS ã®æ„å‘³

unix
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Why does terminal say: "You have mail"?
Any idea why my Mac terminal says: You have mail in /var/mail/lofye How can I make it stop saying that every time I open terminal?
takahiroki 2016/03/05
unix

mail
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How to run commands as in a queue
takahiroki 2016/03/05
commands queue

unix
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How to escape colon (:) in $PATH on UNIX?
takahiroki 2016/03/01
colon ã‚’ãƒ•ã‚¡ã‚¤ãƒ«ãƒ‘ã‚¹ã®ä¸€éƒ¨ã«å«ã‚“ã§ã„ã‚‹å ´åˆã€ PATH ã®åŒºåˆ‡ã‚Šæ–‡å—ã¨ãƒãƒƒãƒ†ã‚£ãƒ³ã‚°ã™ã‚‹ãŒã€ãã‚Œã‚’ã©ã†ã«ã‹ã™ã‚‹æ–¹æ³•ã¯ãªã„ã€‚ file path ã«ã¯ã‚³ãƒãƒ³ã¯ä½¿ã†ãªã€‚ (PATH ã¨ã—ã¦åˆ©ç”¨ã™ã‚‹ãªã‚‰ã°)

unix
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How does Linux handle multiple consecutive path separators (/home////username///file)?
I'm working on a python script that passes file locations to an scp subprocess. That's all fine, but I'm in a situation where I may end up concatenating a path with a filename such that there's a double '/ in the path. I know that bash doesn't care if you have multiple file separators, but I'm wondering how exactly that is rectified. Is it bash that strips extra /s or does it really not matter eve
takahiroki 2016/02/23
å…ˆé ã®'//' (exactly 2) ä»¥å¤–ã¯ã€è¤‡æ•°å€‹ã®ã‚¹ãƒ©ãƒƒã‚·ãƒ¥ (as path name) ã¯ã€å˜ä¸€ã® slash ã¨ç‰ä¾¡ã€‚

posix

unix
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How to add a newline to the end of a file?
takahiroki 2016/02/22
æœ€å¾Œã®è¡ŒãŒ newline ã§çµ‚ã‚ã£ã¦ã„ãªã„å ´åˆã«ã€ sed ã§ newline ã‚’è¿½åŠ ã™ã‚‹

unix

sed
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bash, Linux: Set difference between two text files
I have two files A-nodes_to_delete and B-nodes_to_keep. Each file has a many lines with numeric ids. I want to have the list of numeric ids that are in nodes_to_delete but NOT in nodes_to_keep, i.e. A\B Doing it within a PostgreSQL database is unreasonably slow. Any neat way to do it in bash using Linux CLI tools? UPDATE: This would seem to be a Pythonic job, but the files are really, really large
takahiroki 2015/08/28
é›†åˆã®å·®åˆ†ã‚’è¨ˆç®—ã™ã‚‹ã€‚2 ç•ªç›®ã®ã€ sort ã¨ uniq ã ã‘ã§å®Ÿç¾ã—ã¦ã„ã‚‹ answer ã®æ–¹ãŒä½¿ã„å‹æ‰‹ãŒã‚ˆã„ã€‚

unix
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