http://www.bing.com:80/search?q=Grep+Syntax+Examples+for+Pattern+MatchingSearch resultshttp://www.bing.com:80/s/a/rsslogo.gifhttp://www.bing.com:80/search?q=Grep+Syntax+Examples+for+Pattern+MatchingCopyright © 2026 Microsoft. All rights reserved. These XML results may not be used, reproduced or transmitted in any manner or for any purpose other than rendering Bing results within an RSS aggregator for your personal, non-commercial use. Any other use of these results requires express written permission from Microsoft Corporation. By accessing this web page or using these results in any manner whatsoever, you agree to be bound by the foregoing restrictions.https://unix.stackexchange.com/questions/50512/what-is-the-difference-between-grep-e-and-grep-e-optiongrep -e PATTERN unless, as stated in an earlier Answer and in the man pages, there are multiple search patterns, or to protect a pattern beginning with a hyphen (-).Sun, 12 Apr 2026 18:41:00 GMThttps://stackoverflow.com/questions/1987926/how-do-i-recursively-grep-all-directories-and-subdirectoriesIf you find yourself frequently using grep to do recursive searches (especially if you manually do a lot of file/directory exlusions), you may find ack (a very programmer-friendly grep alternative) useful.Thu, 09 Apr 2026 14:27:00 GMThttps://unix.stackexchange.com/questions/25821/grep-how-to-add-an-or-conditionHow can I introduce a conditional OR into grep? Something like, grepping a file's type for (JPEG OR JPG), and then sending only those files into the photos folder. For example. I know how to sen...Sun, 12 Apr 2026 19:10:00 GMThttps://unix.stackexchange.com/questions/55359/how-to-run-grep-with-multiple-and-patternsI would like to get the multi pattern match with implicit AND between patterns, i.e. equivalent to running several greps in a sequence: grep pattern1 | grep pattern2 | ... So how to convert it toThu, 09 Apr 2026 12:32:00 GMThttps://stackoverflow.com/questions/16956810/find-all-files-containing-a-specific-text-string-on-linuxHow do I find all files containing a specific string of text within their file contents? The following doesn't work. It seems to display every single file in the system. find / -type f -exec grep -H 'Mon, 13 Apr 2026 09:07:00 GMThttps://stackoverflow.com/questions/1069302/using-the-star-sign-in-grepgrep * means "0 or more", and grep is greedy by default. Note that in grep basic regular expressions the metacharacters ?, + , { , | , ( , and ) lose their special meaning.Thu, 09 Apr 2026 18:09:00 GMThttps://stackoverflow.com/questions/56170215/what-is-the-point-of-grep-qMoreover, this is a lot faster than a regular grep invocation, since it can exit immediately when the first match is found, rather than needing to unconditionally read (and write) to the end of file.Sat, 11 Apr 2026 05:13:00 GMThttps://stackoverflow.com/questions/221921/use-grep-exclude-include-syntax-to-not-grep-through-certain-filesSearching on grep include, grep include exclude, grep exclude and variants did not find anything relevant If there's a better way of grepping only in certain files, I'm all for it; moving the offending files is not an option. I can't search only certain directories (the directory structure is a big mess, with everything everywhere).Sat, 11 Apr 2026 11:47:00 GMThttps://unix.stackexchange.com/questions/82990/how-can-i-grep-for-this-or-that-2-things-in-a-filegrep understands three different versions of regular expression syntax: “basic,” “extended” and “perl.” In GNU grep, there is no difference in available functionality between basic and extended syntaxes. In other implementations, basic regular expressions are less powerful.Fri, 10 Apr 2026 22:18:00 GMThttps://stackoverflow.com/questions/22763579/whats-the-difference-between-grep-r-and-rIn the man page: -r Read all files under each directory, recursively, following symbolic links only if they are on the command line. what exactly does "being on the command line" means? T...Fri, 10 Apr 2026 14:12:00 GMT