VirtualTam's bookmarks

  1. The format of here-documents is:

    1[n]<<[-]word
    2        here-document
    3delimiter
    

    If any part of word is quoted, the delimiter is the result of quote removal on word, and the lines in the here-document are not expanded.

    This is useful to write scripts that:

    • write scripts (verbatim)
    • execute a sequence of commands (verbatim) on a remote host
  2. OpenSSL Cookbook 2023-05-31

    The definitive guide to using the OpenSSL command line for configuration and testing.

    Topics covered in this book include:

    • key and certificate management,
    • server configuration,
    • a step by step guide to creating a private CA,
    • testing of online services.
    1. Blocking TCP port 53 traffic leads to very strange failures. Don't.
    2. The source you're looking at is not the code running in production.
    3. "Prod" is just another name for "staging".