![]() ![]() (bearing in mind that case-insensitive matching is often locale-dependent for instance, whether uppercase i is I or İ may depend on the locale according to grep -i i). The standard equivalent of that would look like: grep -e abc -e '' ![]() (and equivalent variants with other regexp syntaxes). Where it could be more interesting would be for instance if you want abc matching to be case sensitive and uyx not, which you could do with: grep -P 'abc|(?i)uyx' Those don't really bring much advantage over the standard -i option. otherwise go to the regex route: grep -regexpAddedChangedFixedDeleted. Grep '\(?i\)abc|uyx' # ast-open grep only which makes it non-POSIX-compliant Use grep -e option (multiple times) like this: grep -e Added -e Changed -e Fixed -e Deleted. Grep -E '(?i)abc|uyx' # ast-open grep only You can use 'strings' to extract strings from a binary file, for example. So if you have that in your binary file, grep will exit early. Grep -K '~(i)abc|uyx' # ast-open grep only grep -text doesnt always work it respects CTRL+D as a file terminator. grep -P '(?i)abc|uyx' # wherever -P / -perl-regexp / -X perl is supported The (s and )s, like | also need to be quoted for them to be passed literally to grep as they are special characters in the syntax of the shell language.Ĭase insensitive matching can also be enabled as part of the regexp syntax with some grep implementations (not standardly). You can add (.)s around abc|uyx ( \(.\) for BREs), but that's not necessary. ![]() # can make it explicit with -G, -basic-regexp or By default with grep with have -e argument which is used to grep a particular PATTERN. # default but with some grep implementations, you Grep -i 'abc\|uyx' # with the \| extension to basic regexps supported by ![]() Grep -i -K 'abc|uyx' # ksh regexps (with ast-open grep) also with Grep -i -X 'abc|uyx' # augmented regexps (with ast-open grep) also with With some grep implementations, you can also do: grep -i -P 'abc|uyx' # perl-like regexps, sometimes also with Filtering out multiple lines with grep: Put these lines in filename.txt to test: abc def ghi jkl. Likewise, if the whole jq filter, which to the shell is a string, contains non-trivial characters such as spaces, brackets or indeed quotes (which would be swallowed by the shell), either escape those characters (as you have tried to, but with the right ones), or enclose the whole filter in single quotes (which is generally the preferred way to do it). this is the idea but the wrong command : grep -v cat file2 file1 > out Thanks. It’s gloomyin’ ower terrible - great muckle doolders o’ cloods.Many options with grep alone, starting with the standard ones: grep -i -e abc -e uyx string list: ben john eric file2 few rows: ben when to school my mother went out the dog is big john has FB eric is nice guy expoted file : my mother went out the dog is big I would like to use grep -v and remove the rows that contains the strings from list. Using Perl regular expressions, it will look like the following: grep -P 'Hello123Halo123' filetosearch. I faced the icons that loomed through the veil of incense.īoth of following lines aren't in command output: 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. So, I need, for example, bloomberg in the command output and don't need ungloomy.ĮDIT 2: There is sample of my expectations.īoth of following lines are in command output: However, both of following commands failed: grep -v 'gloom' -n 'loom' -n 'loom' -v 'gloom' should I do to achieve my goal?ĮDIT 1: I mean that loom and gloom are the character sequences (not necessarily the words). So, I can find loom with command: grep -n 'loom' I want to search loom excluding gloom. presents a text string that could be matched by the regular expression. Unix Grep Multiple Strings Last Updated Grep is a command line utility useful for. First, every regex flavor is different, and I didnt want to crowd the page with. For example, I need find all files/lines including loom except ones with gloom. The grep command is an invaluable tool for any Linux user. I'd like find lines in files with an occurrence of some pattern and an absence of some other pattern. cat countryInfo.txt grep -v '' >countryInfo-n. ![]()
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