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Linux Filesystem  Permissions Most simplified

Filesystem  Permissions

On File
On directory


View file contents
List directory contents (ls)


Alter file contents
Alter directory contents (delete files, create files)


Run an executable file
Make it the current directory (cd to it

Numeric codes follow octal notation

      user  group other
4 2 1 4 2 1 4 2 1
      r w x r w x r w x

For example, rwxr—--x becomes 741

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