grep使用列表查找文件中的匹配项,并仅打印列表中每个字符串的第一个匹配项

如果你想在每个文件后"重置计数器",你可以这样做

cat queries.txt | xargs -I{} grep -m 1 -w {} biglist.txt > output

这用于xargs为grep输入中的每一行调用一次......应该为你做的伎俩.

说明:

cat queries.txt   - produce one "search word" per line
xargs -I{}        - take the input one line at a time, and insert it at {}
grep -m 1 -w      - find only one match of a whole word
{}                - this is where xargs inserts the search term (once per call)
biglist.txt       - the file to be searched
> output          - the file where the result is to be written