January 4, 2024

Memo to change permissions in absolute modes with chmod

  • 600 user: read/write; group, other: none file
  • 644 user: read/write; group, other: read file
  • 755 user: read/write/execute; group, other: read/execute directories, programmes
  • 700 user: read/write/execute; group, other: none directories, programmes
  • 711 user: read/write/execute; group, other: execute directories

To learn more about how to set permissions with chmod and octal-mode read How linux works page 35-37, or pick a book about GNU/Linux and check the index for permissions and/or chmod.

To learn more about octal numbers (that’s the number system the octal-mode of chmod uses) read chapters 10 and 12 of the book Code: the hidden language of computer hardware and software by Charles Petzold - so you can come up with chmod code without looking them up.


I do self-funded research and I'm writing a book.

> What's the book about?

About technologies and agency.

Meaning, technologies can foster agency. No doubt. But I am also asking:

Can usage of technologies give us a sense of empowerment while in fact undermining our abilities?

I posted a summary of the prologue on the homepage: https://yctct.com/


personal computing command-line interface (cli) gnu linux trisquel shell literacy office applications wiki permissions chmod

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