--context=NUM print NUM lines of output context -NUM same as --context=NUM --group-separator=SEP use SEP as a group separator --no-group-separator use empty string as a group separator --color[=WHEN], --colour[=WHEN] use markers to highlight the matching strings; WHEN is 'always',...
Alternation Two regular expressions may be joined by the infix operator |; the resulting regular expression matches any string matching either alternate expression. Precedence Repetition takes precedence over concatenation, which in turn takes precedence over alternation. A whole expression may be enclosed...
grep searches the named input FILEs for lines containing a match to the given PATTERN. If no files are specified, or if the file “-” is given, grep searches standard input. By default, grep prints the matching lines. grep在命名的输入文件中搜索与给定模式匹配的行。如果没有指定文件,或者给...
grep searches the named input FILEs (or standard input if no files are named, or if a single (连字号)hyphen-minus (-) is given as file name) for lines containing a match to the given PATTERN. Bydefault, grepprints the matching lines. In addition, three variant programs egrep, fgrep and...
find - search for files in a directory hierarchy 递归地在层次目录中处理文件 1. 查找方式: 按文件属性查找 按文件类型查找 按文件大小查找 按时间查找 1. 2. 3. 4. 语法 find path -option 动作 option 按文件属性查找 -name 按文件名查找,区分大小写 ...
egrep --invert-match "search_pattern" path/to/file fgrep命令总结: - 【重要】Search for an exact string in a file: fgrep search_string path/to/file - Search only lines that match entirely in files: fgrep -x path/to/file1 path/to/file2 ...
可以看到,当前目录下有一个 testfile 文件,它里面只有一行 "This is a test string." 字符串。 grep "string" testfile 命令会在 testfile 文件中查找 "string" 字符串,找到后打印出对应的行。 grep "string" "testfile" 命令也是在 testfile 文件中查找 "string" 字符串,即使用双引号把 testfile 括起来...
grep(global search regular expression(RE) and print out the line,全面搜索正则表达式并把行打印出来)是一种强大的文本搜索工具,它能使用正则表达式搜索文本,并把匹配的行打印出来。 这也是一个我们比较常用的命令之一,好多时候虽然没通过系统的学习,但是我们还是会经常用到。通过帮助文档我们可以得知,egrep、fgrep是...
grep - print lines matching a patterngrep [OPTIONS] PATTERN [FILE...] grep [OPTIONS] [-e PATTERN | -f FILE] [FILE...]
(Search for a fixed string or fixed strings.) -f expression_file File containing a set of regular expressions, each separated by a newline. The type of the expressions is determined by the -E and -F options. This form is used when more than one expression needs to be specified. You ...