![]() 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. Or perl: perl -ne 'print if /pattern1/ & /pattern2/' If you want to send the output (without comments) to another file instead, youâd use: grep -v /etc/fstab > /fstabwithoutcomment. Or with sed: sed -e '/pattern1/!d' -e '/pattern2/!d' The grep command is perfectly capable of reading files, so instead, you can use something like this to ignore lines that contain comments: grep -v /etc/fstab. Using Perl regular expressions, it will look like the following: grep -P 'Hello123Halo123' filetosearch. In brief, both of these commands accomplish finding multiple strings: using the or condition grep âhellofizzâ myfile.txt using -e grep -e. Use multiple regular expressions - a regular expression for each word you want to find, for example: grep -e Hello123 -e Halo123 filetosearch.txt Use a single regular expression with an 'or' operator. In other words, running multiple grep in one line. OR else use regex using grep -E for extended regex support: grep -vE string onestring two file.log. The best portable way is probably with awk as already mentioned: awk '/pattern1/ & /pattern2/' Grep is a command line utility useful for many text-based search tasks, including searching for two or more strings or regular expressions. You can use -e option multiple times in grep to skip multiple search items: grep -v -e 'string one that I dont want' -e 'string two that I dont want' file.log. If the patterns don't overlap, you may also be able to do: grep -e 'pattern1.*pattern2' -e 'pattern2.*pattern1' grep -Fiw cat protocol_result.txt fi How to cat/grep string into several files semicolon delimited to capture mac address. ![]() ![]() ![]() Capital E switches on regular expression mode and dots need to be escaped in this case. ![]() if ] then echo 'MATCHED' | cat > protocol_result.txt fi grep does not necessarily need input from a pipe, so you could do. I simply want to translate those conditions to another state when nonstandard-protocol is false. SpecialCondition is standardized and can be empty or have a matched or unmatched state. Okay so I have a textfile containing multiple strings, example of this - Hello123 Halo123 Gracias Thank you. ![]()
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