![]() The awk/ sed/ perl ones don't reflect whether any line matched the patterns in their exit status. Please beware that all those will have different regular expression syntaxes. How Do I Convert A Cut Command In Bash Into Grep With Given Code 2. The grep command is available on macOS, most Unix-like systems, and almost all popular Linux distros. You can use this effective tool to search a file for particular words, phrases, or patterns. Or perl: perl -ne 'print if /pattern1/ & /pattern2/' grep puddle21557936 Mixed in with the cut command (or another command if neccessary) to display just this part. grep is a popular command line tool for looking up patterns in files and directories. The syntax is: grep .Or with sed: sed -e '/pattern1/!d' -e '/pattern2/!d' Without passing any option, grep can be used to search for a pattern in a file or group of files. The grep command is handy when searching through large log files. When it finds a match, it prints the line with the result. Using Regular Expression makes it very effective and. ![]() The text search pattern is called a regular expression. grep is a very powerful and useful command in UNIX systems that if used properly can save us precious time. Using the grep command in Linux is pretty straightforward, thanks to its simple syntax along with the multiple options to play with. The best portable way is probably with awk as already mentioned: awk '/pattern1/ & /pattern2/' Grep is a Linux / Unix command-line tool used to search for a string of characters in a specified file. If the patterns don't overlap, you may also be able to do: grep -e 'pattern1.*pattern2' -e 'pattern2.*pattern1' *s as & matches strings that match both and exactly, a&b would never match as there's no such string that can be both a and b at the same time). With ast grep: grep -X '.*pattern1.*&.*pattern2.*' The above command only looks at one file. This is OK but it does not show the true power of grep. The above command searches the file for STRING and lists the lines that contain a match. With GNU grep, when built with PCRE support, you can do: grep -P '^(?=.*pattern1)(?=.*pattern2)' In the simplest case grep can be invoked as follows: grep 'STRING' filename. To find the lines that match each and everyone of a list of patterns, agrep (the original one, now shipped with glimpse, not the unrelated one in the TRE regexp library) can do it with this syntax: agrep 'pattern1 pattern2'
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