问题
When using the Grep command to find a search string in a set of files, is there a way to dump the results to a text file?
Also is there a switch for the Grep command that provides cleaner results for better readability, such as a line feed between each entry?
Perhaps there is a grep script that outputs cleaner results.
Thanks
回答1:
grep -n "YOUR SEARCH STRING" * > output-file
The -n will print the line number and the > will redirect grep-results to the output-file.
If you want to "clean" the results you can filter them using pipe | for example:grep -n "test" * | grep -v "mytest" > output-file
will match all the lines that have the string "test" except the lines that match the string "mytest" (that's the switch -v) - and will redirect the result to an output file.
A few good grep-tips can be found on this post
回答2:
Redirection of program output is performed by the shell.
grep ... > output.txt
grep has no mechanism for adding blank lines between each match, but does provide options such as context around the matched line and colorization of the match itself. See the grep(1) man page for details, specifically the -C and --color options.
来源：https://stackoverflow.com/questions/16631423/output-grep-results-to-text-file-need-cleaner-output