![]() ![]() ![]() URNs are different from URLs in this rigid uniqueness constraint, even though they both share the syntax of URIs. This output can be quite convenient when debugging plugin configurations, by allowing instant access to the event data after it has passed through the inputs and filters. A simple output which prints to the STDOUT of the shell running Logstash. This can be done using the -o (lower-case) command line option. Press question mark to learn the rest of the keyboard shortcuts. If you want, you can also redirect the messages/information wget produces on stdout to a log file. How to redirect your wget output to a log file. ![]() And even if that wasn't the case, the possibility of naming my descendants after me make this unsuitable as a URN. wget -O file-name URL Here is an example screenshot: 4. However, even if no other family used this name, I'm named after my paternal grandfather, so it still wouldn't be unique across time. My name, Roger Pate, could be like a URN (Uniform Resource Name), except those are much more regulated and intended to be unique across both space and time.īecause I currently share this name with other people, it's not globally unique and would not be appropriate as a URN. īecause of this common confusion, many products and documentation incorrectly use one term instead of the other, assign their own distinction, or use them synonymously. In popular usage and in many technical documents and verbal discussions it is often incorrectly used as a synonym for URI. In computing, a Uniform Resource Locator (URL) is a subset of the Uniform Resource Identifier (URI) that specifies where an identified resource is available and the mechanism for retrieving it. O -output-documentFILE write documents to FILE. I say "like" because these examples do not follow the required syntax. I've tried out the following options, but each option is intended/meant for some other purpose. In this case it uniquely identifies me, but that would change if I get a roommate. The following command runs wget and sends the output to STDOUT instead of to a file. My intention/use case here is that when I call wget, I'm very sure that I want to replace/overwrite the existing file. tee will then send the output both to wgetlog and to STDOUT. It is like both a URL and URI (since all URLs are URIs), and also identifies me indirectly as "resident of.". 16 You use the lovely tee command to do this: wget -no-check-certificate -auth-no-challenge -http-userjenuname -http-passwordjenpsswd 2>&1 tee -a wgetlog THe 2>&1 means that STDERR goes to the same place as STDOUT, and they're both piped to tee. This is a locator, which is an identifier for that physical location. gnuzip extracts whatever it gets from standard input, and writes the extracted content to standard output, this time to the pipe connecting to dd. The option -O- writes to standard output, in this case to the pipe connecting to gunzip. In this case it also happens to identify at least 5 other people in the USA alone. If you ran the command as is, wget didn't save anything anywhere. It is like a URI, but cannot be a URL, as it tells you nothing about my location or how to contact me. URIs identify and URLs locate however, locators are also identifiers, so every URL is also a URI, but there are URIs which are not URLs. ![]()
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