In addition, the unbuffer command available on some systems will disable the output buffering that normally occurs in pipelines. Multiple patterns using -es with grep are logical ORs (or logical ANDs if. In grep, a dot character will match any character except a return. Then combine find and the non-recursive use of grep, as a portable solution : find /dir \( -name node_modules -prune \) -o -name "*.sh" -exec grep -color -Hn "your text to find" debugger. Excluding a single pattern 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. On my system (where nullglob is unset), the following command: grep -exclude.cmd ckim -r Is expanded ('understood') by the shell as: grep -exclude.cmd ckim f.cmd g.sh sub -r 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'. The -f option to grep allows one to specify a file containing patterns, one pattern per line. grep abc but exclude def and ghi in the file. If you want to exclude certain files to grep from, you should use the -l option. For example, perhaps the most common special character in grep is the dot. The grep man page says:-v, -invert-match Invert the sense of matching, to select non-matching lines. Use find, for excluding directories foo and bar : find /dir \( -name foo -prune \) -o \( -name bar -prune \) -o -name "*.sh" -print The following command will load the tail plugin and read the content of lines.txt file. It is one of the most used commands in Linux that allows the user to find. Get Linux Shell Scripting Cookbook - Third Edition now with the OReilly learning. 11132 13069 11137 11142 13070 Can I use grep command to exclude all lines beginning with 13 I dont want to use grep -v 13 as potentially there will be a. The grep, or global regular expression print, works on the command line interface. Note that -exclude-dir patterns take priority. The purpose of this solution is not to deal with grep performance but to show a portable solution : should also work with busybox or GNU version older than 2.5. It's suggested to use a configuration file. To read a list of files to exclude from a file, use -exclude-from FILE. The very first method to exclude the described pattern from the file is using the -v flag within the grep instruction is the easiest and simple one. exclude-dir If -R is specified, it excludes directories matching the given filename pattern from the search.
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