. (directory), . and ..
.. (directory), . and ..
.bashrc, ~/.bash_profile, ~/.profile
.bash_login, ~/.bash_login
.bash_logout, ~/.bash_logout
.bash_profile, ~/.bash_profile
/bin/bash, system profile
/bin/ksh, system profile
/etc/bashrc, ~/.bashrc
/etc/default/useradd, /etc/default/useradd
/etc/fstab, acl in /etc/fstab
/etc/group, group file, user owner and group owner
/etc/gshadow, gpasswd
/etc/inputrc, system profile
/etc/login.defs, /etc/login.defs
/etc/passwd, /etc/passwd, login shell, editing local files, user owner and group owner
/etc/profile, system profile
/etc/selinux/config, /etc/selinux/config
/etc/shadow, shadow file, encryption with crypt, setgid and setuid on regular files
/etc/shells, chsh
/etc/skel, /etc/skel/
/etc/sudoers, run a program as another user, sudo su -
/etc/sysctl.conf, /etc/sysctl.conf
/proc/sys/net/ipv4/ip_forward, /proc/sys/net/ipv4/ip_forward
/selinux, /selinux
/selinux/enforce, /selinux
/tmp, sticky bit on directory
/usr/bin/getfacl, getfacl
/usr/bin/passwd, setgid and setuid on regular files
/usr/bin/setfacl, setfacl
/var/log/audit/audit.log, logging
777, setting octal permissions


access control list, acl in /etc/fstab
acl, eiciel
acls, acl in /etc/fstab
auditd, logging


chage, chage
chain (iptables), iptables tables
chcon(1), security context, chcon
chgrp(1), chgrp
chkconfig, logging
chmod, creating home directories, setting octal permissions, DAC or MAC
chmod +x, umask
chmod(1), setting permissions (chmod)
chown, creating home directories
chown(1), chown
chsh(1), chsh
context type(selinux), type (or domain)
crypt, encryption with passwd


eiciel, eiciel


gcc(1), encryption with crypt
getenforce, getenforce
getfacl, getfacl
getfattr(1), extended attributes
GID, group file
gpasswd, gpasswd
groupadd(1), groupadd
groupdel(1), groupdel
groupmod(1), groupmod
groups, groups
groups(1), groups


id, id
id(1), security context
identity(selinux), identity
inode, file links, finding hard links
inode table, inode table
iptables, iptables firewall, iptables tables
iptables save, iptables save


Korn Shell, chsh


mac address, practice: packet forwarding
mangle table (iptables), iptables tables
masquerading, masquerading
md5, encryption with crypt
mkdir, creating home directories
mkdir(1), mkdir -m
mkfs, inode table


tcpdump, practice: packet forwarding
transition(selinux), transition
type(selinux), type (or domain)


w, w
who, who
who am i, who am i
whoami, whoami
wireshark, practice: packet forwarding