neowatch – terminal command monitoring with diff highlighting

neowatch is a command-line alternative to the traditional watch utility. It repeatedly runs a command at a specified interval and displays the resulting output, allowing users to monitor information that changes over time.

The utility concentrates on displaying differences between executions. It can highlight newly appearing or modified text using configurable colours, helping users identify changes without examining the entire output manually.

neowatch also includes specialised handling for numerical changes. It can distinguish increasing and decreasing values using separate colours, making it useful when monitoring counters, statistics or other numerical command output.

Execution behaviour is configurable, including the interval between runs and conditions that cause monitoring to stop. This allows it to serve as a lightweight command monitoring tool as well as an interactive alternative to watch.

This is free and open source software.

Key Features

• Repeatedly executes shell commands at configurable intervals.
• Highlights differences between successive command outputs.
• Customisable colours for newly appearing and changed text.
• Detects numerical changes and highlights increasing and decreasing values separately.
• Configurable numeric radix for change detection.
• Precise interval mode attempts to maintain regular execution timing.
• Exit automatically when the monitored command returns a non-zero status.
• Optionally exit when command output changes.
• Configurable command execution shell.

Website: github.com/kilpkonn/neowatch
Support:
Developer: Tavo Annus
License: GNU Lesser General Public License v2.1

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