我试图在当前目录中search特定的单词BML.I
当我尝试使用下面的命令：
grep -l "BML.I" *
如果包含单词BML ，则显示所有结果
是否可以grep为完全匹配BML.I
你需要逃避。 （句点），因为默认情况下它匹配任何字符，并指定-w来匹配特定的单词，例如
grep -w -l "BML\.I" *
注意在上面有两个级别的转义。 引号确保shell将BML\.I传递给grep。 \然后逃脱grep的期限。 如果您省略了引号，那么shell会将该\解释为这段时间的转义（并且会简单地将未转义的句点传递给grep ）
试试grep -wF
从手册页：
-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 constituent character. Word-constituent characters are letters, digits, and the underscore. -F, --fixed-strings Interpret PATTERN as a list of fixed strings, separated by newlines, any of which is to be matched. (-F is specified by POSIX.)
我使用fgrep ，它与grep -F相同