- [Instructor] In most operating systems…a file is an object, such as a document or photo…that's saved on the hard disk.…These files are organized using named folders…in a hierarchy.…The first type of file that we'll talk about…is a directory.…A directory is a list of other files.…It helps us organize our system…so it's easier to find our files.…We can identify directories…by looking at the first character…on the left of a long list…using ls space, dash L.…That first character should be the letter D.…If the first character is a hyphen,…then it's a regular file.…
This includes most traditional files,…like documents and photos.…If the first character's an L, then it's a symbolic link.…You can think of a symbolic link as a shortcut…to another file.…Viewing these files with ls space, dash L…will show you where the link is pointing to.…If the first character is a C,…it's a character device file…and these files output or input characters.…For instance, the slash dev slash random device file…outputs random characters.…If the first character's a B,…
- Define file Access Control Lists.
- Describe what extended globs add to Linux pattern matching.
- State why file system recovery tools are so important for Linux users.
- Recall what execute permissions on a directory allows.
- Cite the maximum allowed default permissions on a file in Linux.
- List some of the advantages of ACLs over standard Unix permissions.
Skill Level Intermediate
Linux: Desktops and Remote Accesswith Grant McWilliams1h 44m Intermediate
1. Linux Files
2. Manipulate Files
3. Standard Unix Permissions
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