11/18/2023 0 Comments Grep pattern examplesUsing sed command (any order): $ sed '/PATTERN1/!d /PATTERN2/!d' FILE GREP NOT: Negative MatchingĬool Tip: Find and validate IP addresses with grep command! The best regular expression for IP addresses! Read more →įind and print all the lines, that do not match a pattern. Using sed command (exact order): $ sed '/PATTERN1.*PATTERN2/!d' FILE Using awk command (any order): $ awk '/PATTERN1/ & /PATTERN2/' FILE Using awk command (exact order): $ awk '/PATTERN1.*PATTERN2/' FILE Using grep command (any order): $ grep -E 'PATTERN1.*PATTERN2|PATTERN2.*PATTERN1' FILEĬool Tip: The server is out of memory? Check what processes are using all the RAM and SWAP! Bash one liner for the true Linux admins! Read more → Using grep command (exact order): $ grep -E 'PATTERN1.*PATTERN2' FILE Use one of the following commands to find and print all the lines of a file, that match multiple patterns. Note, that you can both find the lines in a file that match multiple patterns in the exact order or in the any order. It is also often required to grep a file for multiple patterns – when it is needed to find all the lines in a file, that contain not one, but several patterns. Using sed command: $ sed -e '/PATTERN1/b' -e '/PATTERN2/b' -e d FILE GREP AND: Match Multiple Patterns Using awk command: $ awk '/PATTERN1|PATTERN2/' FILE If you specify multiple input files, the name of the current file precedes each output line. If grep finds a line that matches a pattern, it displays the entire line. I am able to list the whole IP addresses only while using period followed with an asterisk symbol. I wanted to list all the ip addresses in the file and I used grep with a pattern 192.16 but it doesnt show the whole list of IP addresses. If you specify neither option, grep takes the first nonoption argument as the pattern for which to search. I have a file that contains many IP addresses. Using grep and egrep commands: $ grep "PATTERN1\|PATTERN2" FILE You can specify a pattern to search for with either the e or f option. I’ll show the examples of how to find the lines, that match any of multiple patterns, how to print the lines of a file, that match each of provided patterns and how to find and print the lines, that do not match a pattern (negative matching).Ĭool Tip: Find and validate email addresses with grep command! The best regular expression for email addresses! Read more → GREP OR: Match Any Of Multiple Patternsįind all the lines of a file, that match any of provided patterns. The grep, egrep, sed and awk are the most common Linux command line tools for parsing files.įrom the following article you’ll learn how to match multiple patterns with the OR, AND, NOT operators, using grep, egrep, sed and awk commands from the Linux command line.
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