It's easy with grep . Unix people often supply data in a compressed form. One of the formats commonly used is .gz files. See chmod above for a full explanation of file modes. The number of links in the item listed.
All files listed have just one link which is to their parent directory.
For more discussion of this, please refer to chmod . For more discussion of this, please refer to chmod . For files this indicates the size of the file. For directories, this indicates how many bytes are needed to store the information about the files stored in that directory. In addition, at the top of your directory listing you may see an entry that says something like total 94 or total 145 or whatever.