Search for Multiple Patterns Use the-eoption to search formultiple patterns in a single grep command: grep -e 'server' -e 'cloud computing' -e 'phoenix' example_file2.txtCopy Alternatively, usegrep -E(equivalent
This can be used to specify multiple search patterns, or to protect a pattern beginning with a hyphen (-). (-e is specified by POSIX.) -f FILE, --file=FILE Obtain patterns from FILE, one per line. The empty file contains zero patterns, and therefore matches nothing. (-f is specified...
Obtain patterns from FILE, one per line. If this option is used multiple times or is combined with the -e (--regexp) option, search for all patterns given. The empty file contains zero patterns, and therefore matches nothing. 从文件中获取模式,每行一个。如果此选项多次使用或与-e(——reg...
This option can be used to protect a pattern beginning with “-”. -f FILE, --file=FILE Obtain patterns from FILE, one per line. If this option is used multiple times or is combined with the -e (--regexp) option, search for all patterns given. The empty file contains zero ...
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...
-e PATTERN, --regexp=PATTERN Use PATTERN as the pattern. This can be used to specifymultiple search patterns, or toprotecta patternbeginning with a hyphen(-). (-e is specified by POSIX.) -f FILE, --file=FILE Obtain patterns from FILE, one per line. The empty file contains zero patte...
grep - print lines matching a patterngrep [OPTIONS] PATTERN [FILE...] grep [OPTIONS] [-e PATTERN | -f FILE] [FILE...]
--line-buffering 使用行缓冲,it can be a performance penality. -q,--quiet,--silent 安静。不向标准输出写任何东西。如果找到任何匹配的内容就立即以状态值 0 退出,即使检测到了错误。参见-s或--no-messages选项。 -R,-r,--recursive 递归地读每一目录下的所有文件。这样做和-d recurse选项等价。
Multiple patterns may be described in a file line-by-line, and specified with the -f option. In that case, the blocks matching any of the patterns in that file will be displayed.greple -f patterns ... If multiple files are specified, the patterns in the files are evaluated in the OR...
Use PATTERNS as the patterns. If this option is used multiple times or is combined with the -f (--file) option, search for all patterns given. This option can be used to protect a pattern beginning with “-”. -f FILE, --file=FILE Obtain patterns from FILE, one per line. If this...