Search for Multiple Patterns Use the -e option to search for multiple patterns in a single grep command: grep -e 'server' -e 'cloud computing' -e 'phoenix' example_file2.txtCopy Alternatively, use grep -E (equivalent to the older egrep command) for a similar effect with extended regular...
This can be used to pass multiple search patterns on a single command line. grep -e replaces egrep as the preferred way to search for many patterns at once. The following example uses a contacts list (contacts.txt) with a fixed structure, such that each contact has four lines associated ...
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...
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 ...
How to Grep Multiple Patterns – Syntax The basic grep syntax when searching multiple patterns in a file includes using thegrepcommand followed by strings and the name of the file or its path. The patterns need to be enclosed using single quotes and separated by the pipe symbol. Use the bac...
With the help of‘-e’ optionin grep command, we can search multiple patterns in a single command. Example is listed belpw: $ grep -e nobody -e mail /etc/passwd mail:x:8:8:mail:/var/mail:/usr/sbin/nologin nobody:x:65534:65534:nobody:/nonexistent:/usr/sbin/nologin ...
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 is a powerful command-line tool that allows you to searches one or more input files for lines that match a regular expression and writes each matching line to standard output. In this article, we’re going to show you how to use GNU grep to search for multiple strings or patterns....
Use PATTERN as the pattern. This can be used to specify multiple search patterns, or to protect a pattern beginning with a hyphen (-). (-e is specified by POSIX.) -w :匹配 整个单词 -E :使用ERE -F :相当于fgrep (1)-v: 显示不被pattern 匹配到的行 ...
You can also use grep to find multiple words or strings. You can specify multiple patterns by using the -e switch. Let’s try searching a text document for two different strings: $ grep -e 'Class 1' -e Todd Students.txt Notice that we only needed to use quotes around the strings tha...