![]() Otherwise it is either let "as it" or completely removed - depending on nullglob. This option is experimental when combined with the -z (-null-data) option, and grep -P may warn of Matching Control-e PATTERNS, -regexpPATTERNSUse PATTERNSas the patterns. In the unlikely event you have a file matching this pattern it would have been replaced. How to Exclude in grep Once you have good control over the grep command in Linux, you can use and exclude in grep. Here the pattern is -include=*.cmd (at whole since there is no space in there). But if there is no matching files, it either let the pattern as it (if nullglob is not set) or replace it with "nothing" (if nullglob is set). When using the grep command, to invert the search and return lines that do not include a specific pattern or exclude a specific string, you can use the -v flag. When the shell encounters a glob pattern (i.e.: containing * or ? or a few more special characters), it expands it with the matching files. PS. So the result is: # nullglob is setĪn now, for the explanation. The easiest way to exclude a pattern from a grep search is to use the '-v' option. 6 Answers Sorted by: 55 You can quote the pattern: grep -r -exclude'.cmd' 'ckim'. That is, I will recursively ( -r) search for the string skim starting with f.cmd, g.sh and sub but excluding any file matching the pattern '*.cmd'.īUT if in your environment the option nullglob is set, the same command expands to: grep ckim f.cmd g.sh sub -r The backslash tells grep to ignore (escape) the metacharacter. Is expanded ("understood") by the shell as: grep -exclude=*.cmd ckim f.cmd g.sh sub -r and, precede the metacharacter with a backslash (). grep -r -exclude'expression' 'pattern' directory For example: Excluding directories To exclude one or more directories that match a glob pattern, you can use the -exclude-dir flag. ![]() On my system (where nullglob is unset), the following command: grep -exclude=*.cmd ckim * -r The grep man page says:-v, -invert-match Invert the sense of matching, to select non-matching lines. To exclude one or more files that match a glob pattern, you can use the -exclude flag. So, given the following environment: sh$ touch f.cmd g.sh Excluding multiple patterns with one grep command Ask Question Asked 7 years, 7 months ago Modified 5 years, 4 months ago Viewed 34k times 9 I was wondering if there is a best way to run the following command cat grep -v '90.192.142. There is a shell option called nullglob that controls the expansion of shell patterns when there is no matching file. So it seems the exclude option is not working for me. ![]() I see lots of grepped lines from *.cmd files.
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