Hello I have file with filesnames, it looks like:
names.txt:
first.html
second.html
third.html
I need to search trough all that files and return those which does not contain a pattern. How can I do that.
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1don't understand you – Andriy Ivaneyko Jan 11 '16 at 14:46
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i have file lets say, names.txt, in this file i have filenames from other directory, i need to grep through their content and find files without string pattern which is "taurus" – rzeznik Jan 11 '16 at 14:49
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You need to create a [mcve] – glenn jackman Jan 11 '16 at 14:57
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Do you want `grep -v`? – Benjamin W. Jan 11 '16 at 15:10
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what is the expected behaviour if one of the files listed in names.txt does not exist or is unreadable? Should we include its name in the list of the files not containing your pattern? – mauro Jan 11 '16 at 18:45
1 Answers
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grep accepts multiple files as input, and the option you're looking for is -L
$ grep -L pattern $(cat filenames.txt)
Example:
$ cat filenames.txt
first.html
second.html
third.html
$ cat first.html
2
4
$ cat second.html
1
2
3
4
5
$ cat third.html
4
5
6
7
8
9
10
$ grep -L 2 $(cat filenames.txt)
third.html
karakfa
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