Linux command: grep 用grep命令匹配一行多个字符串 How to use grep to match multiple strings in the same line? grep 'string1\|string2' filename 1. grep -E "string1|string2" filename 1. How can I grep for a string that begins with a dash/hyphen? 1. Quote AND/OR escape 1. Code: ...
Linux command: grep 用grep命令匹配一行多个字符串 How to use grep to match multiple strings in the same line? grep'string1\|string2'filename grep-E"string1|string2"filename How can I grep for a string that begins with a dash/hyphen? 1. Quote AND/OR escape Code: ls | grep "\-a" ...
Why does the empty pattern match every input line? The grep command searches for lines that contain strings that match a pattern. Every line contains the empty string, so an empty pattern causes grep to find a match on each line. It is not the only such pattern: ‘^’, ‘$’, ‘.*...
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-F, --fixed-strings 将PATTERN解释为固定的字符串,不作正则表达式分析。grep -F 'main()' hello.c // 等同于fgrep 'main()' hello.c 匹配控制: -e PATTERN, --regexp=PATTERN 指定pattern为搜索正则表达式,可以通过使用这个选项来指定多个搜索模式,或者用来制定以横线-开始的搜索模式,如grep -e hello -...
General Output Control -c, --count Suppress normal output; instead print a count of matching lines for each input file. With the -v, --invert-match option (see below), count non-matching lines. --color[=WHEN], --colour[=WHEN] Surround the matched (non-empty) strings, matching lines...
awk '{for(i=1;i<=NF;i++){print $i}}' file5.txt > file5_new.txt 输出结果：item1 ...
A pattern to search for. This option can be provided multiple times, where all patterns given are searched. -F, --fixed-strings Treat the pattern as a literal string instead of a regular expression. -i, --ignore-case Searches case insensitively. ...
$ grep -e string1 -e string2 *.pl $ grep -E"word1|word2"*.c### Show all the lines that do not match given pattern/words/strings ###$ grep -v'bar\|foo'/dir1/dir2/file1 $ grep -E -v'pattern1|pattern2'/path/to/file ...
Searching for multiple patterns (OR): grep -E “pattern1|pattern2” filename You can also use the grep command to search multiple strings at the same time. This is also called thegrep OR operation. Grep Example 6:Search for the terms “Linux or linux” in the text file. Also, search...