有没有程序可以计算二进制文件中某个字符串的出现次数？

Question

我有一个二进制文件，我需要计算该文件中某个字符串的出现次数，甚至是列表中的偏移量。在 Windows 或 Linux 中 - 对于此任务，我使用 Fedora 12 和 Windows 2000。

Answer 1

在带有GNU grep 的Linux 上：

grep -F --text -o --byte-offset mystring binaryfile

例子：

$ grep -F --text -o --byte-offset option /bin/tar
226542:option
237529:option
237612:option
...

参数说明：

-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.)

-a, --text
      Process  a binary file as if it were text; this is equivalent to the
      --binary-files=text option.

-o, --only-matching
      Print  only the matched (non-empty) parts of a matching line, with
      each such part on a separate output line.

-b, --byte-offset
      Print the 0-based byte offset within the input file before each line
      of output. If -o (--only-matching) is specified, print the offset of
      the matching part itself

要计算出现次数，请添加| wc -l到命令行。