🔐 File Permissions
How read, write, execute permissions work
What will chmod o-wx file.txt do to existing file permissions?
File permission triplets in Linux
Show File Permissions
Use the -l flag to show file permissions:
command line
ls -l
Change File Permissions
Add write access to a group
command line
chmod g+w somefile.txt
Remove write access to a group:
command line
chmod g-w somefile.txt
Add a specific file permission config, like readonly:
command line
chmod g=r somefile.txt
Update file permissions with octal notation:
command line
chmod 644 somefile.txt
Check out the chmod calculator to configure specific file permissions settings easily.