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...
--color[=WHEN], --colour[=WHEN] Surround(围绕) the matched (non-empty) strings, matching lines, context lines, file names, line numbers, byte offsets, and separators (for fields and groups of context lines) withescape sequences(转义序列???) to display them in color on the terminal. T...
--color[=WHEN], --colour[=WHEN] Surround the matched (non-empty) strings, matching lines, context lines, file names, line numbers, byte offsets, and separators (for fields and groups of context lines) with escape sequences to display them in color on the terminal. The colors are defined...
(Search Strings Case-Insensitive) By default grep searches case sensitive which means upper and lower case chars are interpreted as different. If we are looking for ahostnamein a file it is not important uppercase and lowercase so we will turn off case sensitivity for grep. We will provide-...
matches multiple patterns, the latest matching rule wins. If no --include-dir pattern is specified, all directories are searched that are not excluded. -F, --fixed-strings Interpret pattern as asetof fixed strings (i.e., force grep to ...
awk '{for(i=1;i<=NF;i++){print $i}}' file5.txt > file5_new.txt 输出结果：item1 ...
Print the filename for each match. -h, --no-filename Suppress the prefixing of filenames on output when multiple files are searched. --help Output a brief help message. -I Process a binary file as if it did not contain matching data; this is equivalent to the --binary-files=without...
grep --fixed-strings "exact_string" path/to/file - Search for a pattern in all files recursively in a directory, showing line numbers of matches, ignoring binary files: grep --recursive --line-number --binary-files=without-match "search_pattern" path/to/directory ...
Output the evaluation ofexprfor each line (turns off text highlighting). If PATTERN matches more than once then a line is output for each non-overlapping match. exprmay contain the strings "\n", "\r" and "\t", which will be expanded to their corresponding characters line feed, carriage...
Eoption. This directs grep to search using anExtended regular expression. Different types of regular expressions are a subject for another day—and mastering regular expressions takes a lifetime—but for the purposes of this tutorial, the bold-E command allows you to search multiple strings using...