Appendix B. Command Reference

Basic Command-Line Navigation

Directory Listing

Pager

Command Recall and Tab Completion

Creating Directories

Changing Permissions and Ownership

Screen Is Your Friend

Using grep

Using touch

DNS with dig

Determine Address for a Host

Changing the Server to Be Queried

Finding the Authoritative Nameserver

Querying the Authoritative Nameserver

Finding Mail Servers

Finding SPF and TXT Records

Examining the Root