Linux: Files and Permissions

Learn how to manage files and directories, create links, and set permissions in Enterprise Linux 8.

Introduction

• Manage files and permissions in Linux
• What you should know
• Get help with commands
• Using the exercise files
• Reconfigure or migrate CentOS

Linux Files

• What is a file?
• Getting information about files
• About extended attributes
• Getting extended attributes
• About file globs
• Using character classes
• Using globs to match files
• Matching with brace expansion
• The Magic of extended globs
• Matching files with extended globs
• Advanced extended globs

Manage Linux Files

• Understanding filesystem paths
• Creating files and dirs
• Copying files and dirs
• Moving and renaming files and dirs
• Deleting files and dirs
• Creating links to files and dirs
• Making file manipulation safe
• Challenge: Linux files
• Solution: Linux files

Linux Permissions

• Standard Linux permissions overview
• File and directory modes
• File ownership
• Permissions using numeric notation
• Permissions using symbolic notation
• Initial permissions using umask
• Special file bits: SUID and SGID
• Special directory bits: SGID and Sticky
• Challenge: Permissions
• Solution: Permissions

Access Control Lists

• ACL overview
• Read ACLs
• Setting ACLs
• Manage Default ACLs
• Delete ACLs
• ACL tricks
• Challenge: ACLs
• Solution: ACLs

Conclusion

• Next steps