Bash-Oneliner
Skip to the content. Bash-Oneliner 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
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Linux(shellコマンド) ファイル検索 dir/ é…下ã®.py ã¾ãŸã¯ .ipynb ファイル㧠hogehoge ã‚’å«ã‚€ã‚‚ã®ã‚’検索ã—ãŸã„ grep -r --include='*.py' --include='*.ipynb' "hogehoge" dir/ dir/ é…下ã®ç‰¹å®šã®æ–‡å—列をå«ã‚€ãƒ•ã‚¡ã‚¤ãƒ«ã‚’一括ã§ç½®æ›ã—ãŸã„ 例ãˆã°ã€ calender ã®ã‚¿ã‚¤ãƒã‚’一括ã§ä¿®æ£ã—ãŸã„å ´åˆ find dir/* \( -name "*.py" -o -name "*.ipynb" \) | xargs sed -e 's/calender/calendar/g' -i mac OS ã®å ´åˆ, POSIX sed ãŒæ¨™æº–ã§å…¥ã£ã¦ã„ã‚‹ã®ã§ä¸Šæ›¸ãã—ã¦ã—ã¾ã£ã¦ã‹ã‚‰å®Ÿè¡Œã™ã‚‹ã¨ã‚ˆã„ brew install gnu-sed --with-default-names git 複数ã«åˆ†ã‹ã‚ŒãŸã‚³ãƒŸãƒƒãƒˆã‚’ã¾ã¨ã‚
xargsã§ã‚µã‚¯ãƒƒã¨æ›¸ã - Qiita
複数ã®è¦ç´ を処ç†ã—ãŸã„時〠データをå–ã£ã¦ãã‚‹(fetch) -> 抽出(filter) -> 列挙(foreach, map) ã¨ã„ã†å®šåž‹çš„ãªæž 組ã¿ã®ä¸ã§å‡¦ç†ã‚’è¡Œã†ã“ã¨ãŒå¤šã„ã¨æ€ã„ã¾ã™ã€‚例ãˆã°ã€ã‚¹ã‚¯ãƒ¬ã‚¤ãƒ”ングã¨ã‹ã§æŠœã出ã—ãŸè¤‡æ•°ã®å‹•ç”»ã€éŸ³å£°ãƒ•ã‚¡ã‚¤ãƒ«ã®ãƒªã‚¹ãƒˆã‚’一括ダウンãƒãƒ¼ãƒ‰ã—ãŸã„ã¨ã‹ã€‚ ãã†ã„ã†ã®ã¯ã€ã§ãã‚‹ã ã‘(Pythonã‚„shellãªã©ã®)スクリプトã¨ã‹ã‚‚書ã‹ãšã«ã€commandã®ã¿ã§ã‚µã‚¯ãƒƒã¨æ›¸ã„ã¦æ¸ˆã¾ã›ã¦ã—ã¾ã„ãŸã„ã‚‚ã®ã§ã™ã€‚ データをå–ã£ã¦ãã‚‹(fetch)ã«é–¢ã—ã¦ã¯ã€ãƒªãƒ¢ãƒ¼ãƒˆã®ã‚‚ã®ã‚’fetchã™ã‚‹ãªã‚‰curlã¨ã‹ã€ã™ã§ã«ãƒãƒ¼ã‚«ãƒ«ã«ã‚ã‚‹ãªã‚‰catã¨ã‹ã„ã‚ã„ã‚ãƒãƒªã‚¨ãƒ¼ã‚·ãƒ§ãƒ³ã¯ã‚ã‚Šãã†ã§ã™ã€‚ 一方ã§ã€æŠ½å‡º(filter), 列挙(foreach, map)ã«é–¢ã—ã¦ã¯æ±Žç”¨çš„ãªcommandã¯ã¾ãã€é™ã‚‰ã‚Œã¦ã„㦠抽出(filter) 列挙(foreach, map) ã§å‡¦ç†ã™ã‚‹ã“ã¨ãŒã§ãã¾
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xargs 㧠-0 を使ã‚ãšã« find ã®å‡ºåŠ›ã‚’渡㙠- hyconã®æ—¥è¨˜
POSIXã® xargs ã«ã¯ -0 オプションãŒãªã„ã®ã§ find ã§å¾—ãŸãƒ•ã‚¡ã‚¤ãƒ«åã«ç©ºç™½ãªã©ãŒã‚ã£ãŸå ´åˆã«é¢å€’ãŒç”Ÿã˜ã¾ã™ã€‚ãã®ãŸã‚ã€find ã®å‡ºåŠ›ã‚’åŠ å·¥ã—ã¾ã™ã€‚ 註: ã‚ã¾ã‚Šè©¦ã—ã¦ãªã„ $ find .//. -print \ |sed -n ':loop;s/./\\&/g;${p;q};x;n;/\/\//!{x;s/.*/&\\/;x};x;p;x;b loop' \ |xargs -E "" command... 「find ... -print0 |xargs -0ã€ã®æ™‚ã¨å¤‰ãˆã‚‹ã“ã¨ã¯ã€ãƒ‘スã®å…ˆé ã«ã€Œ.//ã€ã‚’付ã‘ã‚‹ã“ã¨ã€find 㨠xargs ã®é–“ã« sed スクリプトを挟むã“ã¨ã§ã™ã€‚ find ãŒå‡ºåŠ›ã™ã‚‹ãƒ‡ã‚£ãƒ¬ã‚¯ãƒˆãƒªã®åŒºåˆ‡ã‚Šã¯ã€Œ/ã€1個ã ã‘ã¨ã„ã†ã®ã‚’利用ã—ã€ã€Œä»Šã®è¡Œã«ã€Ž//ã€ãŒå«ã¾ã‚Œã¦ã„ãªã„å ´åˆã¯å‰ã®è¡Œã®ç¶šãã ã‹ã‚‰å‰ã®è¡Œã®æœ€å¾Œã«ã€Ž\ã€ã‚’ã¤ã‘ã‚‹ã€ã¨ã„ã†å‡¦ç†ã‚’æ–½ã—ã¦ã„ã¾ã™
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コマンド $ ls | sed -e s/\.txt// | awk '{print $1 ".txt " $1 "_document.md"}' | xargs -n 2 mv 戦略ã«ã¤ã„㦠ã¾ãšå‰æã¨ã—ã¦ã€ãƒ•ã‚¡ã‚¤ãƒ«ã®ãƒªãƒãƒ¼ãƒ ã‚’è¡Œã†ã«ã¯ã€ xargs -n 2 mv ã«ãƒ‘イプ㧠元ファイルå リãƒãƒ¼ãƒ 後ã®ãƒ•ã‚¡ã‚¤ãƒ«å ã®ã‚ˆã†ãªãƒ•ã‚©ãƒ¼ãƒžãƒƒãƒˆã®æ–‡å—列を渡ã›ã° OK ã§ã™ã€‚ $ ls before.txt $ echo "before.txt after.txt" before.txt after.txt $ echo "before.txt after.txt" | xargs -n 2 mv $ ls after.txt ã“ã®æ–‡å—列ãŒè¤‡æ•°è¡Œã‚ã‚‹å ´åˆã€ xargs -n 2 mv ã¯1è¡Œãšã¤é †æ¬¡å‡¦ç†ã—ã¾ã™ã€‚ $ ls 1.txt 2.txt $ echo "1.txt 11.txt\n2.tx
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find + sed ã§ä¸€æ–‰ç½®æ› - Qiita
Sed ã§ãƒ•ã‚¡ã‚¤ãƒ«åã¨å†…å®¹ã‚’ä¸€æ‹¬ç½®æ› - Qiita
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