be either at the end of the line or followed by a non-word constituent character. Word-constituent characters are letters, digits, and the underscore. 只选择包含构成整个单词的匹配项的行。测试是匹配的子字符串必须位于行首,或者位于非单词组成字符的前面。同样,它必须行尾或后跟非单词组成字符。单词组成...
ne Boolean value that prevents clearing to the end of line using Erase in Line (EL) to Right (\33[K) each time a colorized item ends. This is needed on terminals on which EL is not supported. It is otherwise useful on terminals for which the back_color_erase (bce) boolean terminfo ...
orpreceded(在……之前) by anon-wordconstituent(成分) character. Similarly, it must be either at the end of the lineorfollowedby anon-wordconstituent character.Word-constituent(成分)characters areletters,digits, and
1.startline,endline 比如1,100 $:最后一行 2./RegExp/ /^root/ 3./pattern1/,/pattern2/ 第一次被pattern匹配到的行开始,至第一次pattern2匹配到的行结束,这中间的所有行。 4.LineNumber 指定行 5.startline,+N 从startline开始,向后的N行。 Command: d:删除符合条件的行。 sed '3,$d' /etc/...
Regexp selectionandinterpretation: // 正则表达式选择和解释-E,--extended-regexp PATTERN is an extended regular expression (ERE)-F,--fixed-strings PATTERN is a set of newline-separated strings-G,--basic-regexp PATTERN is a basic regular expression (BRE)-P,--perl-regexp PATTERN is a Perl ...
$ dollar signis used to search for a pattern that only occurs at the end of a line. $ grep "1$" Students.txt . dotis used to match any one character, so it’s a wildcard but only for a single character. $ grep "A….a" Students.txt ...
sed -n ‘1,2p’ infile #print line 1 to 2 sed -n '2,$p' file ##print line 2 to end of line sed '/pattern/!p' infile ## 匹配pattern的行不输出 sed -n -e '/build/p' /etc/cli.cfg p-打印行 n - e --e或--expression=:以选项中的指定的script来处理输入的文本文件 sed 替换...
Read redir console input if FILES-FROM is - Read console keyboard input if FILES-FROM is -- Demo Known Issues Option --word (-w) cannot find begin of line, and, end of line. Yung, Chun Kau yung.chun.kau@gmail.com 2024 MarchAbout...
grep（global search regular expression(RE) and print out the line）是一种强大的文本搜索工具，可以...
line 1 line 2 start of important section line 4 line 5 end of important section line 7 line 8 如果我们想找到包含 "important section" 的段落,并显示整个段落,可以这样做: 代码语言:txt 复制 grep -C 2 'important section' example.txt 这将输出: 代码语言:txt 复制 start of important section line...