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WebMar 1, 2024 · 2 grepコマンドの便利なオプションたち. 2.1 grepコマンドの一覧. 2.2 -iオプション:大文字と小文字を区別せず検索する. 2.3 -Eオプション:拡張正規表現で検索を行う. 2.4 -eオプション:一致処理に指定した正規表現を使う. 2.5 -vオプション:一致しない … WebSep 26, 2024 · read -r -p 'Enter pattern: ' pattern result=$( grep -e "$pattern" records ) if [ -n "$result" ]; then printf '%s\n' "$result" else printf 'No match found for pattern "%s"\n' … brick gold coast
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WebSep 27, 2024 · Notice "pattern" rather than "keyword". The way you use grep here will use the user-supplied string as a regular expression (a pattern, such as cat.*dog), not necessarily as a plain fixed string. cat should be used to concatenate files, in most other cases it's more or less useless. Use read -r to allow the user to enter backslashes. WebMay 13, 2024 · 查找当前目录下所有文件中包含字符串”Linux”的文件,会将含有Linux字符串的所有文件匹配出来。. 1、小应用. # cat a.txt. nihao. nihaooo. hello. # if grep -q hello a.txt ; then echo yes;else echo no; fi. yes. # if grep -q word a.txt; then echo yes; else echo no; fi. WebMay 1, 2024 · この回答と先の回答では test と grep の挙動の違いから 450 等に対する結果が異なるのでその辺はご承知おきを。 オイラ的には csh スクリプトを書く気が全くな … covers for rcs