Date: Wed, 07 Sep 2022 20:43:21 -0700 From: Carl Johnson <carlj@peak.org> To: freebsd-questions@freebsd.org Subject: Re: Slightly OT: How to grep for two different things in a file Message-ID: <86edwmmsyu.fsf@bay.localnet> In-Reply-To: <CAGBxaXn6ZO-e0746fwzNp%2Bv-6bAucjxePMOt-mEv2HKmkCBXcg@mail.gmail.com> (Aryeh Friedman's message of "Wed, 7 Sep 2022 18:00:36 -0400") References: <CAGBxaXn6ZO-e0746fwzNp%2Bv-6bAucjxePMOt-mEv2HKmkCBXcg@mail.gmail.com>
next in thread | previous in thread | raw e-mail | index | archive | help
Aryeh Friedman <aryeh.friedman@gmail.com> writes: > I have 2 patterns I need to find in a given set of files. A file only > matches if it contains *BOTH* patterns but not in any given > relationship as to where they are in the file. In the past I have > used piped greps when both patterns are on the same line but in my > current case they are almost certainly not on the same line. > > For example my two patterns are "tid" (String variable name) and > "/tmp" [String literal] (i.e. the full string is the concatenation of > the two patterns I would do: > > grep -Ri tid src/java|grep -i /tmp > > But since /tmp is in a symbolic constant defined elsewhere (in a > different Java file) I need to find programmatically either the name > of the constant (has different names in different classes) and then do > the piped grep above with it or I need to look for the two patterns > separately and say a file is only accepted if it has both. > > P.S. The reason for this is I am attempting to audit my code base to > see what classes leave behind orphaned temp files. I use grep -l to just return a list of files that contain one pattern, and then grep -l for the second pattern on that list. That can be done in one line for your example as follows: grep -li /tmp `grep -liR tid src/java` I hope that gives you some ideas. -- Carl Johnson carlj@peak.org
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?86edwmmsyu.fsf>