Developer and system tools for checking configuration
Test permissions, ignore rules, compose files, user mappings, and file sync patterns with your own inputs.
Tools
Chmod calculator
Convert octal modes or permission checkboxes into rwx notation and a chmod command example. Check owner, group, others, and special bits without changing files.
.dockerignore tester
Test .dockerignore rules against path probes and see Included or Excluded verdicts, deciding lines, and ordered traces. Matching stays local.
Docker Compose checker
Check one pasted Compose file for YAML, Compose structure, and static clues.
LXC ID mapping checker
Check LXC UID and GID mappings, overlaps, gaps, and subordinate grant coverage.
Rsync filter tester
Test rsync include and exclude rules against sample paths and see the winning line.
Keyboard shortcuts cheat sheet generator
Build a printable keyboard shortcut cheat sheet from the apps and task groups you use, with platform-aware keys and app names kept in the sheet.