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Debuggex: Online visual regex tester. JavaScript, Python, and PCRE.

Sign in · GitHub 20 Linux System Monitoring Tools Every SysAdmin Should Know Need to monitor Linux server performance? Try these built-in commands and a few add-on tools. Most Linux distributions are equipped with tons of monitoring. These tools provide metrics which can be used to get information about system activities. You can use these tools to find the possible causes of a performance problem. The commands discussed below are some of the most basic commands when it comes to system analysis and debugging server issues such as: Finding out bottlenecks.Disk (storage) bottlenecks.CPU and memory bottlenecks.Network bottlenecks. #1: top - Process Activity Command The top program provides a dynamic real-time view of a running system i.e. actual process activity. Fig.01: Linux top command Commonly Used Hot Keys The top command provides several useful hot keys: => Related: How do I Find Out Linux CPU Utilization? #2: vmstat - System Activity, Hardware and System Information Display Memory Utilization Slabinfo # vmstat -m Get Information About Active / Inactive Memory Pages

Mockups Take a second. Let it sink in. The first impression might be disorienting. Getting your ideas out should be effortless. Our sweet spot: the ideation phase Mockups really shines during the early stages of designing a new interface. Mockups is zenware, meaning that it will help you get "in the zone", and stay there. Mockups offers the same speed and rough feel as sketching with pencil, with the advantage of the digital medium: drag & drop to resize and rearrange elements, make changes without starting over, and your work is clear enough that you'll make sense of them later. See what you can build with Mockups Download the samples above, or find more on Mockups To Go, our community-contributed stencils site. Designed for collaboration Your whole team can come together around the right design using Mockups. Mockups intentionally makes your wireframes scream both This is not final! Learning UX Design Smooth and short learning curve, from beginner to power-user Limited interactivity, on purpose!

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Keyboard Shortcut List | Shortcuts and Hot Keys Reference for Windows, Mac OS, Linux. RegexOne - Learn regular expressions with interactive examples WakaTime · Analytics for programmers

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