Printable Special Bits and Umask Chart
This sheet is for anyone checking Linux file permissions, especially when working with chmod, special bits, or umask. It lays out a simple table with columns for Item, Value, Shown as, and Effect. The rows cover setuid, setgid, and sticky bit, with the usual numeric values and the permission symbol each one shows.

Free printable · PDF
- 1 page
- US Letter — choose “Fit to page” for A4
- PDF, 53 KB
Free for personal, family and classroom use.
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Use it as a quick reference while setting permissions or reading command output. Keep it beside your terminal, or print it for a lab, help desk, or study folder. The chart helps you match each special bit to its value and effect, including how directories handle group ownership and deletion rules.
Good for
- Check special permission values fast
- Review chmod symbols and effects
- Keep beside Linux practice notes
Tip: Print it on one page and keep it near your terminal for quick checks.
4 files · PDF, XLSX
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This sheet plus 3 more in one download, with the editable Excel files. Printable chmod and permissions cheat sheet, special bits reference, common modes by use case, a permissions audit worksheet and a find/chmod command reference.
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