'Red' activates all red piXels, 'Blue' activates all blue pixels, and 'Green' activates all of the green piXels. The concept is simple - select a test color, and PiXel Check will put up a screen to allow you to check the specific pixels. PiXel Check is an application that assists you in visually inspecting your LCD for bad or 'dead' pixels.When new updates are available, macOS sends you a notification or you can opt in to have updates installed automatically when your Mac is not in use. The best way to keep your Mac secure is to run the latest software. It includes an Edit button to enable modifying the test, which toggles to Done when editing to switch back to the summary.Apple helps you keep your Mac secure with software updates. It shows a summary of the test click the heading for each line of the summary to jump right to that page. It is accessed when the Tests list is active.
![]() For example if you know that a server will be unavailable, perhaps during a periodic reboot or regular maintenance, or you simply don't want to know about changes at certain times, like of a blog when you should be working.Several services come built-in. The Auto Pause page enables you to tell Simon not to check on specified days or time intervals. The Reports page specifies whether the test should appear on some or all reports. Drive Status: Checks the drive capacity threshold, S.M.A.R.T. DNS: Query a domain name server to ensure the domain is visible. Application: Make sure an application is present, and optionally running — can re-launch if not via Launch notifier. They include, among others: App That Checks For S Plus A SSLOutgoing Mail (SMTP): Outgoing mail usually goes via a SMTP server make sure it is available (plus a SSL variation). Network Time (NTP): Checks that a network time server is responding. Incoming Mail (POP): Another kind of mail server (plus a SSL-enabled edition is also available). Incoming Mail (IMAP): Communicate with an IMAP mail server, to make sure it is available, and/or look for new messages. ![]() Not a problem! You can customize the services to edit the defaults for the built-in ones, or even add new ones. Web Page: Check a website for changes or failures.Usually the built-in services are ample, but what if you want to delve deeper? Sometimes you have a special requirement and want to check some other kind of server. TCP Port Scanner: Checks the status of all TCP ports on a server. SSH: Converse with a remote secure shell session. Block: Look for two pieces of text in the filter input, and output the text between them, if found. Many filters define default behavior that can be customized for each test, for maximum flexibility. They can also look at the output of any previous filters, and other values, specified as the input for each filter.Like services, filters can be customized as desired via the Filter Info pane and used in any number of tests. Filters can also optionally detect if the output is different than the previous time they checked.Multiple filters can be chained to perform operations on the text output by the service. A comment count on a blog, or the lead headline area on a news site. Options include case sensitivity, finding the start or end of a word, and more. Find Keyword: Find some text in the input, using simple text matching. Change: Simply detect a change anywhere in the input text. Block Without Changes: Similar to the Block filter, but doesn't detect changes useful as a filter before others. Advanced options include the ability to look for a specific occurrence of the markers. Like for Find Keyword, several find and find & replace options are available. Definitely a power-user feature! A handy menu of available regex operators is included. Find Regular Expression: Find some text in the input, using a regular expression. Spss for windows and macUseful for undesired text. Find Unwanted: Look for some text in the input, and result in a failure if it is found. Useful to check for text that must be present. Very useful for refining the output. They strip out all occurrences of the indicated kind of item from the text. Ignore HTML Tag Pairs, Ignore HTML Tags, Ignore Images, Ignore Links, Ignore Numbers, and Ignore Words with Digits: These filters are all similar. Doesn't detect changes, since you might want to do further filtering after this. Override Custom: A test-configurable override. The output text remains the same. Override as Unchanged: Alters the current status to Unchanged, to cancel out a Changed or Failure status. They all requires only a valid number as the input, so use another filter before this one to cut down the text to just a number, if necessary. Number Changed, Number Changed by 10, Number More Than 95%, Number Out of Range: These filters evaluate a number, and result in a Change or Failure depending on specified conditions. The Preview pane includes the rendered content, HTML source and server headers of the page, plus the output of each filter for the test. Like the Script service, the Script filter plug-in enables a virtually infinite range of filtering options.To make it easier to find text for the Filter feature, or just to quickly view the site without leaving Simon, Preview pane is available. Trim Whitespace: Removes spaces, tabs, and returns from the start and end of the text.Want to do something else? No problem: you can add custom filters by writing an AppleScript, shell script, or Perl, Python etc script. Simple Format: The Format filters can reformat the output text, including using variables, for example to combine the output of two filters, or wrap in quotes. The status will be Unchanged if the error is the same as last time, or Changed if the error is different. Override No Fail: Alters a Failure to be a Success status, with the error message as the output text. Each test can use any number of notifiers, with separate notifiers for each type of event. You're in luck: Simon also has a notifiers feature, with several ways of telling you about things you want to know. But you're a busy person, and sometimes want important events to really catch your attention. And it displays this information in the Monitor window, Dock icon, and Status menu. Preview is also available for non-web services, to see what is output by the server and the filters.Okay, so Simon monitors your tests, detecting changes, failures, and recoveries. Email: Send an email message to you at work, a friend or client, or your cellphone. APC Masterswitch: Toggle an outlet on an APC Masterswitch power device. Action: Bounce the Dock icon, activate Simon, display in your web browser, and other actions. For additional flexibility, variables enable customizing the notifier with test names, URLs, times, etc. The Script notifier plug-in enables a virtually infinite range of notification options. To perform a PHP script on the server.As with services and filters, you can add custom notifiers by writing an AppleScript, shell script, or Perl, Python etc script. Web: Get or post to a web page, e.g. Sound: Play a sound several extras are provided.
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