Part I. file security
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Part I. file security
Table of Contents
1. standard file permissions
file ownership
user owner and group owner
listing user accounts
chgrp
chown
list of special files
permissions
rwx
three sets of rwx
permission examples
setting permissions (chmod)
setting octal permissions
umask
mkdir -m
cp -p
practice: standard file permissions
solution: standard file permissions
2. advanced file permissions
sticky bit on directory
setgid bit on directory
setgid and setuid on regular files
setuid on sudo
practice: sticky, setuid and setgid bits
solution: sticky, setuid and setgid bits
3. access control lists
acl in /etc/fstab
getfacl
setfacl
remove an acl entry
remove the complete acl
the acl mask
eiciel
4. file links
inodes
inode contents
inode table
inode number
inode and file contents
about directories
a directory is a table
. and ..
hard links
creating hard links
finding hard links
symbolic links
removing links
practice : links
solution : links