如何在 linux 中模拟旧的 unix grep -S 严格功能

Question

我正在搜索命令的输出，我希望只返回特定的、严格的结果。

我记得 grep 的一些迭代有一个严格的选项-s/ --strict。

例如，grep -s bytes只会返回提到“字节”一词的条目，而不是每个包含字节的词，如“兆字节”、“千字节”等。

Answer 1

   -w, --word-regexp
          Select  only those lines containing matches that form whole
          words.  The test is that the matching
          substring must either be at the beginning of the line, or 
          preceded  by  a  non-word  constituent
          character.   Similarly,  it  must be either at the end of the
          line or followed by a non-word con-
          stituent character.  Word-constituent characters are
          letters, digits, and the underscore.