Re: Slightly OT: How to grep for two different things in a file

It appears that Steve O'Hara-Smith <steve@sohara.org> said:
>On Wed, 07 Sep 2022 20:43:21 -0700
>Carl Johnson <carlj@peak.org> wrote:
>
>> 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`
>
>	This fails in the presence of filenames with spaces, which is a
>pity because it is very elegant.

Something like this should do it. The -print0 and -0 deal with spaces in
the filenames, and the xargs handles more filenames than fit in a single
command.

$ find src/java -type f -exec grep -lq tid '{}' \; -print0 | 
  xargs -0 grep -l /tmp

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