Grep exclude file pattern

Improve this question. G-Man Says 'Reinstate Monica' Add a comment. Active Oldest Votes. Use find. It might be hard to figure out from the man page that -exec is both an action and a test.

So, just as find. Any find test can be negated inverted by preceding it with! So find. Note that! The -q option to grep is officially a synonym for --quiet , but it also means quick. The two commands are functionally equivalent, but may have different performance i. How to Encrypt File in Linux. Postfix mail server configuration in Linux step by step. Shell Script to Trim Whitespace. Sed Command to Delete Lines in Linux. The output shows nothing.

Hence, there is nothing left to be displayed on the console from the file new. The above examples illustrate excluding texts from the files with a single pattern mentioned in the command. Now, we will be using the multiple patterns in the same syntax of commands to see how it works. We have used the 2 patterns to be searched and then excluded from the file, i. As the 5 lines of the new. The output of this query displays the single line left that has no word matched with the specified pattern.

Chan Kim Chan Kim 4, 7 7 gold badges 37 37 silver badges 76 76 bronze badges. Add a comment. Active Oldest Votes.

Chan Kim 4, 7 7 gold badges 37 37 silver badges 76 76 bronze badges. Tiago Lopo Tiago Lopo 6, 1 1 gold badge 27 27 silver badges 44 44 bronze badges. This won't give a significant difference unless the OP has set nullglob.

It's the right practice but it doesn't give the solution. Am I missing something? It should work but even if unquoted it still would. I might be wrong with my assumption actually, and that your code may actually be able to help solve the issue - not because you're helping it prevent itself from expanding to a file, but because you help prevent it from becoming nullified when nullglob is enabled.

Thanks to quoting, any kind of pathname expansion is prevented. I can't believe I really overlooked that part. Timofey Stolbov Timofey Stolbov 4, 3 3 gold badges 38 38 silver badges 45 45 bronze badges. Explicit file arguments are still filtered.