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: ...
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 for the term Linux or hello. $ grep -E "Linux|linux" file.txt # Tutorial...
cx= SGR substring for whole context lines (i.e., non-matching lines when the -v command-line option is omitted, or matching lines when -v is specified). If however the boolean rv capability and the -v command-line option are both specified, it applies to selected non-matching lines ins...
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 ...
grep - print lines matching a patterngrep [OPTIONS] PATTERN [FILE...] grep [OPTIONS] [-e PATTERN | -f FILE] [FILE...]
--help Print a usage message briefly summarizing these command-line options and the bug-reporting address, then exit. -V, --version Print the version number of grep to the standard output stream. This version number should be included in all bug reports (see below). ...
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: ‘^’, ‘$’, ‘.*’, and many other patterns cause grep to match eve...
Grep Command:A Linux/Unix command-line tool for finding plain text information with regular expressions (regex). Regular Expression (Regex): A string of characters that specifies a search pattern for text processing The grep command is the Linux text-processing Swiss Army knife. From debugging cod...
A regular expression is the text you want to search. It can be a single word or a complex text string called apattern. The regex is the abbreviated form of theregularexpression. A source can be a single file, the output of another command, multiple files, or a text buffer. ...
Example 2: Apply grep & grepl with Multiple PatternsWe can also use grep and grepl to check for multiple character patterns in our vector of character strings. We simply need to insert an |-operator between the patterns we want to search for....