Useful Uses of cat | Hacker News
The reason these sequences of commands always start with cat, for me at least, is that I just cat’d the file only to find it was too long or noisy. cat filename.txt Up | grep “thing I want†Is fewer keystrokes than cat filename.txt grep “thing I want†filename.txt Or more likely cat filename.txt grep filename.txt “thing I want†grep “thing I want†filename.txt You can also do: grep “thing I wantâ€
個人的ã«åˆ©ç”¨ã—ã¦ã„ã‚‹Bashã®æ©Ÿèƒ½ç´¹ä»‹ - Qiita
ã“ã®è¨˜äº‹ã¯MicroAd Advent Calendar 2021ã®13日目ã®è¨˜äº‹ã§ã™ã€‚ æ¦‚è¦ ã“ã®è¨˜äº‹ã§ã¯ï¼ŒBashã§åˆ©ç”¨ã§ãるシェルã®æ©Ÿèƒ½ã«ã¤ã„ã¦ï¼Œå€‹äººçš„ã«æœ€ä½Žé™å¿…è¦ã«æ„Ÿã˜ã‚‹ã‚‚ã®ã«ã¤ã„ã¦ç´¹ä»‹ã—ã¾ã™ï¼Ž å¿…è¦ã‹ã©ã†ã‹ã‚„，便利ã‹ã©ã†ã‹ã¯ç†è€…ã®ä¸»è¦³çš„ã§ã™ã®ã§ï¼Œå‚考ã¾ã§ã«ã—ã¦ã„ãŸã ã‘ã‚Œã°å¹¸ã„ã§ã™ï¼Ž コマンド履æ´ã‚’使ã„ã‚„ã™ãã™ã‚‹ シェルã®å®Ÿè¡Œå±¥æ´ã«é–¢ã™ã‚‹è¨å®šã¯ä»¥ä¸‹ã®ã‚ˆã†ãªã‚‚ã®ãŒã‚ã‚Šã¾ã™ï¼Ž メモリã«ä¿å˜ã™ã‚‹å±¥æ´æ•°(HISTSIZE) ファイルã«ä¿å˜ã™ã‚‹å±¥æ´æ•°(HISTFILESIZE) å±¥æ´ã®ãƒ•ã‚©ãƒ¼ãƒžãƒƒãƒˆ(HISTTIMEFORMAT) å±¥æ´ã«æ®‹ã•ãªã„コマンド(HISTIGNORE) ã“れらã¯ï¼Œä»¥ä¸‹ã®ã‚ˆã†ã«ç’°å¢ƒå¤‰æ•°ã§è¨å®šå¯èƒ½ã§ã™ï¼Ž export HISTSIZE=10000 export HISTFILESIZE=10000 export HISTTIMEFORMAT="%Y/%m/%d %H:%M
Bashã§æ£è¦è¡¨ç¾ãƒžãƒƒãƒã—ãŸæ–‡å—列をå–り出㙠- Qiita
#!/bin/bash version="4.10.1" if [[ ${version} =~ ^([0-9]+)\.([0-9]+)\.([0-9]+)$ ]]; then all=${BASH_REMATCH[0]} major=${BASH_REMATCH[1]} minor=${BASH_REMATCH[2]} patch=${BASH_REMATCH[3]} echo ${all} # 4.10.1 echo ${major} # 4 echo ${minor} # 10 echo ${patch} # 1 fi ãƒã‚¤ãƒ³ãƒˆ 比較部分㯠[[ ]] ã§å›²ã† 比較部分㯠=~ å³è¾ºã®æ£è¦è¡¨ç¾éƒ¨åˆ†ã¯ "" ã§å›²ã‚ãªã„ å³è¾ºã®æ£è¦è¡¨ç¾éƒ¨åˆ†ã§ãƒžãƒƒãƒã•ã›ã¦å–り出ã—ãŸã„部分をカッコã§å›²ã† ${BASH_REMATCH[0]} ã«ã¯ãƒžãƒƒãƒã—ãŸæ–‡å—列全体ãŒå…¥ã‚‹ カッコã§å›²ã£ãŸéƒ¨åˆ†ãŒ ${BASH
シェルスクリプトã§lsをパイプã§ã¤ãªãã®ã¯ãªãœæ‚ªã„ã®ã‹ ～ ShellCheck: SC2010, SC2011, SC2012 ã¨ãƒ•ã‚¡ã‚¤ãƒ«å改行å•é¡Œ - Qiita
シェルスクリプトã§lsをパイプã§ã¤ãªãã®ã¯ãªãœæ‚ªã„ã®ã‹ ～ ShellCheck: SC2010, SC2011, SC2012 ã¨ãƒ•ã‚¡ã‚¤ãƒ«å改行å•é¡ŒShellScriptUNIXshellシェル芸POSIX ã¯ã˜ã‚㫠シェルスクリプト㧠ls コマンドã®å‡ºåŠ›çµæžœï¼ˆãƒ•ã‚¡ã‚¤ãƒ«å一覧）をパイプã§ä»–ã®ã‚³ãƒžãƒ³ãƒ‰ã«æ¸¡ã—ã¦å‡¦ç†ã™ã‚‹ã®ã¯æŽ¨å¥¨ã•ã‚Œã¾ã›ã‚“。ls コマンドを使ã£ãŸã‚³ãƒ¼ãƒ‰ã‚’ ShellCheck ã§æ¤œæŸ»ã™ã‚‹ã¨ãŠãらãå•é¡ŒãŒã‚ã‚‹ã¨è¦å‘ŠãŒè¡¨ç¤ºã•ã‚Œã‚‹ã§ã—ょã†ã€‚ls を使ã†ãªã¨ã„ã†æŒ‡æ‘˜è‡ªä½“ã«ã¯è³›æˆãªã®ã§ã™ãŒ SC2010ã€SC2011ã€SC2012 ã«æ›¸ã„ã¦ã‚ã‚‹ç†ç”±ã«ã¤ã„ã¦ã¯æ£ã—ã„説明ãŒã•ã‚Œã¦ã„ãªã„ã¨æ€ã£ã¦ã„ã¾ã™ã€‚ã“ã®è¨˜äº‹ã§ã¯ãªãœ ls ã®å‡ºåŠ›çµæžœã‚’ä»–ã®ã‚³ãƒžãƒ³ãƒ‰ã«ãƒ‘イプã§æ¸¡ã™ã®ãŒæ‚ªã„ã®ã‹ã€ls を使ã‚ãšã«å®Ÿç¾ã™ã‚‹ã«ã¯ã©ã†ã—ãŸã‚‰è‰¯ã„ã®ã‹ã‚’解説ã—ãŸã„ã¨æ€ã„ã¾ã™ã€‚一ã¤è£œè¶³ã‚’ã—ã¦ãŠãã¨ã€ã“ã®å•é¡Œã¯ CLI コマ
シェルスクリプトã§å®‰å…¨ç°¡å˜ãªäºŒé‡èµ·å‹•é˜²æ¢ãƒ»æŽ’ä»–/共有ãƒãƒƒã‚¯ã®å¾¹åº•è§£èª¬ - Qiita
ã¯ã˜ã‚㫠シェルスクリプトã§äºŒé‡èµ·å‹•é˜²æ¢ã‚„ãƒãƒƒã‚¯ã‚’ã™ã‚‹æ–¹æ³•ã‚’検索ã™ã‚‹ã¨ã€ã„ã‚ã„ã‚ãªæ–¹æ³•ã‚„書ãæ–¹ãŒè¦‹ã¤ã‹ã‚Šã¾ã™ãŒã€ã©ã‚Œã‚’使ãˆã°ã‚ˆã„ã®ã‹ã€æœ¬å½“ã«æ£ã—ãå‹•ãã®ã‹ã€ä¸å®‰ã«ãªã‚Šã¾ã™ã‚ˆã？ ディレクトリ (mkdir) やシンボリックリンク (ln) を使ã£ãŸç‹¬è‡ªå®Ÿè£…ã®ä¾‹ã‚‚見ã‹ã‘ã¾ã™ãŒã€ã‚¨ãƒ©ãƒ¼ç™ºç”Ÿæ™‚や予期ã›ã¬é›»æºæ–ã€CTRL+C ã§æ¢ã‚ãŸã¨ããªã©ã§ã‚‚å•é¡Œã¯ç™ºç”Ÿã—ãªã„ã®ã§ã—ょã†ã‹ï¼Ÿ ã¾ãšã€ãƒ‡ã‚£ãƒ¬ã‚¯ãƒˆãƒªã‚„シンボリックリンクを使ã£ãŸç‹¬è‡ªå®Ÿè£…ã¯ã—ãªã„。ã“れをè‚ã«éŠ˜ã˜ã¦ãã ã•ã„。シェルスクリプトã§ã®ãƒãƒƒã‚¯ç®¡ç†ã¯ã¨ã¦ã‚‚難ã—ãã€ä¸€èˆ¬çš„ãªæŽ’他制御ã®çŸ¥è˜ã«åŠ ãˆã¦ã€ã‚·ã‚§ãƒ«ã‚¹ã‚¯ãƒªãƒ—ト特有ã®å•é¡Œã€ã‚·ã‚°ãƒŠãƒ«ã‚„トラップã€ã‚µãƒ–シェルやåプãƒã‚»ã‚¹ã®å•é¡Œã€ã•ã‚‰ã«ã¯ç‰¹å®šã®ã‚·ã‚§ãƒ«å›ºæœ‰ã®ä»•æ§˜ã‚„ãƒã‚°ãªã©ã•ã¾ã–ã¾ãªå•é¡Œã«å¯¾å‡¦ã™ã‚‹å¿…è¦ãŒã‚り大変ã§ã™ã€‚独自実装ã®ä¾‹ã§ã¯å¤ã„ãƒãƒƒã‚¯ãƒ•ã‚¡ã‚¤ãƒ«ãŒæ®‹ã£ã¦ã—ã¾ã„ã€ãれをã„ã¤ã©ã®ã‚¿ã‚¤ãƒŸãƒ³ã‚°ã§ç‰‡ä»˜ã‘ã‚Œã°å®‰å…¨ãªã®ã‹ï¼Ÿ
å著「入門UNIXシェルプãƒã‚°ãƒ©ãƒŸãƒ³ã‚°ã€ã®è¶…詳細ãªãƒ¬ãƒ“ューをã—ã¦ã¿ãŸï¼ˆå¤ã„内容ã®è¨‚æ£ï¼‰ - Qiita
Deleted articles cannot be recovered. Draft of this article would be also deleted. Are you sure you want to delete this article? ã¯ã˜ã‚ã« ãりゃã¾ã‚ 30 年も経ã¦ã°å¤ããªã‚Šã¾ã™ã‚ˆã€‚「入門UNIXシェルプãƒã‚°ãƒ©ãƒŸãƒ³ã‚°ã€ã¯ä»Šã‚‚シェルスクリプトã«é–¢ã™ã‚‹ã‚ªã‚¹ã‚¹ãƒ¡ã®æœ¬ã¨ã—ã¦åå‰ãŒæŒ™ãŒã‚‹åè‘—ã§ã™ã€‚ã—ã‹ã—ã“ã®æœ¬ã¯å¤ã„本ã§ã™ã€‚POSIX ã§ã‚·ã‚§ãƒ«ãŒæ¨™æº–化ã•ã‚Œã‚‹ä»¥å‰ã®æœ¬ã§ã€å†…容ã‹ã‚‰åˆ¤æ–ã™ã‚‹ã¨ãŠãらã 1990 å¹´ãらã„ã®å¸¸è˜ã«åŸºã¥ã„ã¦æ›¸ã‹ã‚Œã¦ã„ã¾ã™ã€‚ å¤ã„ã‹ã‚‰å‚考ã«ãªã‚‰ãªã„ã¨è¨€ã†ã¤ã‚‚ã‚Šã¯ã‚ã‚Šã¾ã›ã‚“。ã—ã‹ã—ã©ã‚Œã ã‘優れãŸæœ¬ã§ã‚‚時間ã®æµã‚Œã«ã¯å‹ã¦ã¾ã›ã‚“。良書ã§ã‚ã‚‹ã¨æ€ã£ã¦ã„ã‚‹ã‹ã‚‰ã“ãã€å¤ããªã£ã¦ã—ã¾ã£ãŸå†…容ã¯è¨‚æ£ã™ã‚‹å¿…è¦ãŒã‚ã‚‹ã¨è€ƒãˆã¦ã„ã¾ã™ã€‚ãªãŠã‚·ã‚§ãƒ«ã‚¹ã‚¯ãƒªãƒ—トã«é–¢ã™ã‚‹å¤ã„本ã¯ã“ã‚Œ
rupa/z: z - jump around
Z(1) User Commands Z(1) NAME z - jump around SYNOPSIS z [-chlrtx] [regex1 regex2 ... regexn] AVAILABILITY bash, zsh DESCRIPTION Tracks your most used directories, based on 'frecency'. After a short learning phase, z will take you to the most 'frecent' directory that matches ALL of the regexes given on the command line, in order. For example, z foo bar would match /foo/bar but not /bar/foo. OPTIONS
GitHub - onceupon/Bash-Oneliner: A collection of handy Bash One-Liners and terminal tricks for data processing and Linux system maintenance.
I am glad that you are here! I was working on bioinformatics a few years ago and was amazed by those single-word bash commands which are much faster than my dull scripts, time saved through learning command-line shortcuts and scripting. Recent years I am working on cloud computing and I keep recording those useful commands here. Not all of them is oneliner, but i put effort on making them brief an
Bash | ゲンゾウ用ãƒã‚¹ãƒˆã‚¤ãƒƒãƒˆ
ゲンゾウ用ãƒã‚¹ãƒˆã‚¤ãƒƒãƒˆ シェル / Bash / Linux / Kubernetes / Docker / Git / クラウドã®tipsを発信。
ã¡ã‚‡ã£ã¨è¤‡é›‘ãªã‚·ã‚§ãƒ«ã‚¹ã‚¯ãƒªãƒ—トをJavaScriptã§æ›¸ã - lacolaco-engineering
ã¡ã‚‡ã£ã¨è¤‡é›‘ãªã‚·ã‚§ãƒ«ã‚¹ã‚¯ãƒªãƒ—トを https://github.com/google/zx を使ã£ã¦æ›¸ãã¨JavaScriptプãƒã‚°ãƒ©ãƒžã«ã¨ã£ã¦ã¯ãƒ¡ãƒ³ãƒ†ãƒŠãƒ³ã‚¹ã—ã‚„ã™ã„ /lacolaco/lacolaco.iconã¯zxæ´ 3-4ヶ月ã£ã¦ã¨ã“ã‚ (2021-08) 嬉ã—ã„ã¨ã“ã‚ async/awaitãŒä½¿ãˆã‚‹ é…列ãŒæ‰±ã„ã‚„ã™ã„ モジュールã§å†åˆ©ç”¨ã—ã‚„ã™ã„ ä»–ã®Node.jsライブラリã¨ä½µç”¨ã§ãã‚‹ Prettierã§ãƒ•ã‚©ãƒ¼ãƒžãƒƒãƒˆã—ã‚„ã™ã„ Lintã—ã‚„ã™ã„ エディタ支æ´ãŒå®‰å¿ƒ Made by Google 微妙ãªã¨ã“ã‚ JavaScriptプãƒã‚°ãƒ©ãƒžä»¥å¤–ã«ã¨ã£ã¦ã¯ç„¡ç”¨ ã¨ã¯ã„ãˆã‚·ã‚§ãƒ«ã‚¹ã‚¯ãƒªãƒ—トã«ã‚ˆã»ã©æ…£ã‚Œã¦ã‚‹äººä»¥å¤–ã¯ã‚ˆãæ•´ç†ã•ã‚ŒãŸJavaScriptã®ã»ã†ãŒã‚»ãƒžãƒ³ãƒ†ã‚£ã‚¯ã‚¹ã‚’èªã¿å–ã‚Šã‚„ã™ã„ã®ã§ã¯ãªã„㋠スクリプト自体ã¯ã“ã‚“ãªæ„Ÿã˜ï¼ˆå…¬å¼READMEより） code:js #!/usr/bin/en
シェルスクリプトを書ãã¨ãã«ã„ã¤ã‚‚ã‚„ã‚‹ã‚„ã¤ã‚’調ã¹ãŸ
bash ã®ã‚·ã‚§ãƒ«ã‚¹ã‚¯ãƒªãƒ—トを書ãã¨ãã«ã€ã„ã¤ã‚‚脳æ»ã§ä»¥ä¸‹ã‚’ã‚„ã£ã¦ã„る。(åŒåƒšãŒæ•´å‚™ã—ã¦ãã‚ŒãŸã‚‚ã®ã‚’コピペã—ã¦ã„ã‚‹) エディタãªã‚Š CI 㧠shellcheck ã‚’ã¾ã‚ã™ set -euxo pipefail ã¨å†’é ã«æ›¸ã ã“ã‚“ãªæ„Ÿã˜ #!/bin/bash set -euxo pipefail ã„ã¤ã¾ã§ã‚‚コピペã§ã¯ã•ã™ãŒã«ã‚¢ãƒ¬ãªã®ã§ã€æ„味を調ã¹ãŸãƒ¡ãƒ¢ã€‚ shellcheck koalaman/shellcheck: ShellCheck, a static analysis tool for shell scripts イケã¦ãªã„書ãæ–¹ã«è¦å‘Šã‚’出ã—ã¦ãれる ãã‚Œãžã‚Œã®è¦å‘Šã«ã¯ã‚¨ãƒ©ãƒ¼ã‚³ãƒ¼ãƒ‰å‰²ã‚ŠæŒ¯ã‚‰ã‚Œã¦ã„ã¦ã¨ã¦ã‚‚便利 エラーコードã”ã¨ã«æ£èª¤ä¾‹ã€è§£èª¬ãŒæ›¸ã‹ã‚Œã¦ã„ã‚‹ã®ã§ã‚ã‹ã‚Šã‚„ã™ã„ SC1000 ã®ä¾‹ CI ã‚‚ãã†ã ã—ã€ã‚¨ãƒ‡ã‚£ã‚¿ã®ãƒ—ラグインも充実 ã—ã¦ã„ã‚‹ã®ã§ã¨ã‚Šã‚ãˆãšå…¥ã‚Œã¦ãŠãã¨è‰¯ã„ set
Minimal safe Bash script template
Published on December 14, 2020   ·  Updated on December 16, 2020 Bash scripts. Almost anyone needs to write one sooner or later. Almost no one says “yeah, I love writing themâ€. And that’s why almost everyone is putting low attention while writing them. I won’t try to make you a Bash expert (since I’m not a one either), but I will show you a minimal template that will make your scripts safer. You
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GitHub - facebook/dotslash: Simplified executable deployment
ã€è¡æ’ƒã®ç½ 】bashスクリプトã®ãƒ‘フォーマンス測定ã¯ã€å¯¾è©±ã‚·ã‚§ãƒ«ã§ã‚„ã£ã¦ã‚‚ç„¡æ„味ã ï¼ - Qiita
ã€è„±sed】ã„ã„åŠ æ¸›ã‚·ã‚§ãƒ«ã‚¹ã‚¯ãƒªãƒ—ãƒˆã§æ–‡å—列をsedã§ç½®æ›ã™ã‚‹ãªã‚“ã¦ã‚„ã‚よㆠ- Qiita
GitHub - dylanaraps/pure-sh-bible: 📖 A collection of pure POSIX sh alternatives to external processes.
How to propagate a signal to child processes from a Bash script
GitHub - dvorka/hstr: bash and zsh shell history suggest box - easily view, navigate, search and manage your command history.
GitHub - wting/autojump: A cd command that learns - easily navigate directories from the command line
GitHub - curusarn/resh: RESH â¯â¯ Contextual shell history for zsh and bash
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