Index

A

  1. Access control list (ACLs)

    1. access privileges

    2. blanket denial rule

    3. break option

    4. continue option

    5. filters

    6. meta users

    7. password information

    8. regex style

    9. stop option

    10. test

  2. Active Directory (AD)

  3. Adduser command

  4. Advanced Packaging Tool (APT)

  5. Alfresco

  6. Aliases

  7. Anaconda application

  8. Ansible

    1. commands

    2. installation and configuration

    3. inventory

    4. playbooks

    5. Python

    6. target systems/inventory

    7. variables and conditionals

  9. Antispam tool

  10. Antivirus

  11. Apache authentication

  12. Apache virtual host

  13. Apache web server

    1. CentOS

    2. file and directory

    3. httpd

    4. installation and configuration

    5. introduction

    6. modules

    7. MPMs

    8. Nginx

    9. PHP support

    10. restrictions

    11. Ubuntu

    12. virtual host

  14. Apparmor

  15. Application Installer

    1. categories

    2. Firefox

    3. installed packages

    4. new kernel

    5. refresh updates

    6. restart & install

    7. system up to date

  16. Application packages

  17. Application programming interface (API)

  18. apropos command

  19. Apt cache

  20. apt-file command

  21. Aptitude tool

    1. add package dependencies

    2. become root

    3. command list

    4. defined

    5. install package dependencies

    6. linux-image

    7. main screen

    8. noninteractive mode

    9. package description

    10. package information

    11. removal

    12. repositories

    13. root user warning dialog

    14. search by name

    15. update

  22. A2query command

  23. A record

  24. Array

  25. Ataylor

  26. Atlas

  27. AUTH command

  28. Authenticated contacts

  29. Authenticated users

  30. Authentication

  31. Authoritative name servers

  32. Automating mounts

  33. AWS storage

B

  1. Backports, Ubuntu

  2. Backup

    1. AWS storage

    2. differential

    3. duply

    4. full

    5. Google storage

    6. hot

    7. incremental

    8. network

  3. Bare metal

  4. Bareos

    1. Bacula

    2. bareos-dir.conf

      1. catalog

      2. clients

      3. console

      4. FileSets

      5. JobDefs

      6. jobs

      7. messaging

      8. pools

      9. schedules

      10. storage

      11. syntax test

    3. bareos-fd.conf

    4. bareos-sd.conf

    5. bconsole

    6. catalog records

    7. components

    8. configuration

    9. database

    10. Director daemon

    11. File daemon

    12. incremental backup

    13. introduction

    14. plug-ins

    15. restore operation

    16. software

    17. Storage daemon

    18. TCP ports

    19. Web-UI

  5. Bash

    1. package

    2. command

    3. shell

  6. Basic Input/Output System (BIOS)

  7. Bayesian spam filters

  8. Bconsole

  9. Beats

    1. Apache

    2. defined

    3. Filebeat

    4. YAML

  10. Begin Installation

  11. Berkeley Internet Name Domain (BIND)

  12. Binary logs

  13. Binding

  14. Bind mount

  15. Bin logs

  16. Blanket denial rule

  17. Block devices

  18. Blocks

  19. Boot partition

  20. Boot loader

    1. BIOS

    2. problems

      1. execute shell

      2. questions

      3. re-install GRUB

      4. rescue menu

      5. rescue mode

      6. rescue shell

      7. root partition

    3. secure

    4. UEFI

  21. Boot source

  22. Bootstrapping

  23. Branch server

  24. Brick

  25. Brute-force cracking methods

  26. Btrfs filesystem

  27. Build directory

  28. Business continuity management (BCM)

C

  1. Caching name server

  2. Carbon-aggregators

  3. Carbon-cache

  4. Carbon-relay

  5. Carriage return line feed (CRLF)

  6. cat command

  7. cd command

  8. CentOS

    1. Apache web server

    2. diagnostic information

    3. graphical login

    4. GUI tool

    5. LiveCDs

    6. Nagios

    7. OpenLDAP

    8. PAM

    9. PID

    10. Postfix

    11. runlevel

    12. server installation

      1. anaconda application

      2. assumptions

      3. ATA VBOX HARDDISK

      4. automatic configuration

      5. automatic partition

      6. Begin Installation

      7. boot partition

      8. booting new host

      9. cloud storage

      10. default gateway

      11. desktop language

      12. destination screen

      13. destroying and recreating disk layout

      14. DHCP server

      15. disk encryption password

      16. DNS server

      17. encrypting disks

      18. encryption technology

      19. end of desktop configuration

      20. EULA

      21. find applications

      22. Google sign

      23. graphical user interface

      24. host name

      25. IPv4

      26. IPv6

      27. keyboard layout

      28. kickstart

      29. network confirmation screen

      30. network installation source

      31. NTP servers

      32. passphrase

      33. ready to use

      34. root password

      35. root user

      36. root volume

      37. security profile

      38. select network & host name

      39. setting date & time

      40. splash screen

      41. summary screen

      42. user creation

      43. UTC

      44. X Window System

    13. sudo command

    14. systemd

    15. and Ubuntu hosts

    16. wheel

  9. Centos7

  10. CentOS Cobbler

    1. CentOS7-x86_64 distribution

    2. configuration

    3. DHCP

    4. host

      1. CentOS7-x86_64 profile

      2. DHCP address

      3. hard disk

      4. installation

      5. installing CentOS

      6. installing Ubuntu

      7. list and report options

      8. MAC/IP addresses

      9. menu

      10. setting network boot

      11. Ubuntu installation

    5. import command

    6. installation

    7. kickstart

    8. report

    9. and Spacewalk

    10. TFTP

    11. troubleshoot

    12. Ubuntu ISO

    13. Ubuntu Xenial

    14. web interface

  11. Centralized linux authentication

  12. Certbot

  13. Certificate authority (CA)

    1. commercial

    2. creation

    3. non-commercial

    4. secure

    5. self-managed

    6. sign in

  14. Certificate-based encryption

  15. Certificates

    1. CA

    2. HTTPS

    3. self-signed

    4. TLS

    5. type

  16. Certificate signing request (CSR)

  17. Cfq scheduler

  18. chage command

  19. Chain loading

  20. chown command

  21. Chrome

  22. Chrony

    1. chronyc

    2. install and configure

    3. introduction

  23. Chronyc

  24. Chroot command

  25. Chroot jail

  26. ClamAV

    1. configuration

    2. defined

    3. help

    4. install

    5. Postfix

    6. signatures

  27. Cloud

  28. CNAME

  29. Codec plug-ins

  30. Collectd

    1. configuration

    2. introduction

    3. plugin

    4. start and stop

  31. Command-line interface (CLI)

  32. Command-line, Linux

  33. Computer operating systems

  34. Configuration management

    1. Apache service

    2. bootstrapping

    3. CentOS installation

    4. client

    5. configuring puppet

    6. configuring master

    7. creation

    8. disks and partitions

    9. documentation

    10. external nodes

    11. facter

    12. firewall and network

    13. functions

    14. installation source

    15. installing serverspec

    16. keyboard, language and time zone

    17. MAAS

    18. managing users

    19. manifests

    20. module

    21. multiple hosts

    22. package management

    23. preseeding

    24. Puppet

    25. reports

    26. resources

    27. running tests

    28. serverspec testing

    29. templates

    30. troubleshooting puppet

    31. Ubuntu installation

  35. Console directory

  36. Contact groups

  37. Content delivery networks (CDNs)

  38. Content management system (CMS)

  39. Coordinated Universal Time (UTC)

  40. Correlation

  41. Cosine schema

  42. CPU

  43. Createrepo package

  44. CRLF

SeeCarriage return line feed (CRLF)

  1. Cron

  2. Crond

  3. Crontab

  4. CUPS

    1. administration page

    2. administrator’s credentials

    3. defaults

    4. home page

    5. printer information

    6. printer model

    7. ready to print

    8. USB printer

D

  1. Dandified (DNF)

  2. Database

  3. Data life cycle

  4. Data sharing

  5. Deadline scheduler

  6. Debian Linux distribution

  7. Debmirror package

  8. Default gateway

  9. Defence Information Systems Agency (DISA)

  10. Denial of Service attacks (DoS)

  11. Development packages

  12. Device-mapper

  13. Devices

  14. DHCP

SeeDynamic Host Configuration Protocol (DHCP)

  1. Diagnostic information

  2. Differential backup

  3. Dig command

  4. Digital certificate

  5. DigitalOcean

  6. Director daemon

  7. Directory Access Protocol (DAP)

  8. Directory information tree (DIT)

  9. Directory structure

  10. Disaster recovery planning (DRP)

  11. Discretionary Access Control (DAC)

  12. Disk

    1. access

    2. failure

    3. partition table

    4. space

  13. Distinguished name (DN)

  14. Distributed Denial of Service attacks (DDoS)

  15. Distributed network filesystem (DNFS)

  16. Distributed volume

  17. Dmesg

  18. DNS block list (DNSBL)

  19. DNSKEY

  20. DNSSEC

  21. Document management system (DMS)

  22. Domain block list (DBLs)

  23. Domain Key Identified Mail (DKIM)

  24. Domain Name System (DNS)

    1. authoritative

    2. caching

    3. configuration

    4. dig command

    5. dynamic

    6. entries

    7. forwarders

    8. forward lookup zones

    9. host command

    10. IP address

    11. Name server

    12. querying name servers

    13. reverse lookup zones

    14. rezone

    15. root servers

    16. Samba

    17. security

    18. slave server

    19. types

    20. Ubuntu

    21. whois command

    22. zone metadata

  25. Dovecot

  26. Dpkg tool

    1. contents

    2. defined

    3. details

    4. file search

    5. install

    6. linux-images

    7. options and flags

    8. packaging system

    9. remove

    10. status codes

  27. Driftfile directive

  28. dstat

  29. Duply

    1. configuration

    2. defined

    3. Duplicity

    4. run

    5. S3 buckets

    6. usage

  30. Dynamic Host Configuration Protocol (DHCP)

    1. configuration

    2. dynamic DNS updates

    3. install and configure

    4. introduction

    5. static lease

E

  1. Elasticsearch

    1. cluster

    2. curl command

    3. installations

    4. Logstash

    5. Zen Discovery module

  2. ELS

SeeExtended life-cycle support (ELS)

  1. E-mail

    1. address

    2. after sending

    3. before sending

    4. configuration

    5. DKIM

    6. infected files

    7. SPF

    8. work

  2. End User License Agreement (EULA)

  3. Enterprise monitoring

  4. Envelope

  5. Environment variables

  6. Ethtool

  7. Execute permission

  8. EXPIRE option

  9. Ext2 filesystem

  10. Ext3 filesystem

  11. Ext4 filesystem

  12. Extended life-cycle support (ELS)

  13. Extended SMTP (ESMTP)

F

  1. Fake RAID

  2. Fedora

    1. LiveCD

  3. Files

    1. copy

    2. date and time

    3. delete

    4. disk space

    5. edit

    6. link

    7. move

    8. ownership

    9. read

    10. rename

    11. search

    12. size

    13. systems

    14. types

  4. Filebeat

  5. File daemon

  6. Filegen directive

  7. FileSets directory

  8. File share

  9. Filesystem

    1. automating mounts

    2. Btrfs

    3. creating swap

    4. data sharing

    5. e2fsck

    6. ext2

    7. ext3

    8. ext4

    9. features

    10. introduction

    11. journaled

    12. maintenance mode

    13. other

    14. /proc

    15. recovery

    16. repair tools

    17. superblock

    18. unmounting

    19. usage

    20. UUIDs

    21. XFS

  10. Filesystem in UserSpacE (FUSE)

  11. Filters

  12. Find command

  13. Firewall

  14. Firewall-cmd

  15. Fork bomb

  16. Forwarders

  17. Forward lookup zones

  18. Forward Secure Sealing (FSS)

  19. FPM

  20. Full backup

G

  1. Gateway server

  2. Gentoo

  3. Gibibytes

  4. Gigabytes

  5. Git

    1. basics

    2. installation

      1. carriage return line feed

      2. experimental performance options

      3. line feed to carriage return line feed

      4. select terminal

      5. VCS

      6. windows command line

  6. Git Bash

  7. Glob strings

  8. GlusterFS

    1. Bareos

      1. configure

      2. create

      3. update DNS records

    2. brick

    3. CLI commands

    4. concepts

    5. configuration

    6. distributed replicated volume

    7. distributed volume

    8. install

    9. introduction

    10. peers and volumes

    11. replicated volume

    12. settings

    13. striped volume

    14. test

    15. volume storage

  9. Google storage

  10. GPG

  11. Grafana

    1. graphite back end

      1. add data source

      2. carbon metrics

      3. create new dashboard

      4. data source

      5. graph

      6. metrics dashboard

      7. test metric

    2. install

    3. introduction

  12. GRANT statement

  13. Graphical user interfaces (GUIs)

    1. CentOS

    2. edit

    3. Linux and Windows

    4. Ubuntu

    5. Wired network

  14. Graphite

    1. -API

    2. carbon

    3. installation

    4. -web

    5. whisper

  15. grep command

  16. Grok function

  17. Groupadd command

  18. Group class

  19. Groupdel command

  20. Group ID (GID)

  21. Groups

    1. create

    2. delete

    3. GUI

    4. store data

    5. working with

  22. GRUB

  23. GRUB2

    1. boot loader

    2. configure

    3. menu

  24. GUID Partition Table (GPT)

  25. GUIs

SeeGraphical user interfaces (GUIs)

  1. Gunicorn

H

  1. Hard disks

  2. Hard fail state

  3. Hardware

  4. Hardware Abstraction Level (HAL)

  5. Hardware Compatibility Lists (HCLs)

  6. Hardware RAID

  7. Headers

  8. Head office resources

  9. Home directory

  10. Host command

  11. Hot backups

  12. htpasswd command

  13. httpd

  14. Hypertext Transfer Protocol Secure (HTTPS)

I

  1. Incremental backups

  2. Indexes

  3. Information technology (IT) companies

  4. Initd scripts

  5. InnoDB

  6. Inodes

  7. Interfaces

    1. active

    2. bonded

    3. CLI

    4. enp0s8

    5. GUI

    6. ip help

    7. MTU

    8. nmcli

    9. nmtui

    10. SLAAC

  8. Internet Control Message Protocol (ICMP)

  9. Internet Corporation for Assigned Names and Numbers (ICANN)

  10. Internet Message Access Protocol (IMAP)

    1. advantanges

    2. defined

    3. disadvantanges

    4. Dovecot

      1. configure

      2. help

      3. introduction

      4. test

      5. troubleshoot

  11. Internet Protocol (IP)

    1. -based virtual host

  12. Internet Protocol version 4 (IPv4)

  13. Internet superserver

  14. I/O elevators

  15. I/O schedulers

  16. Iptables

    1. command options

    2. filter table

    3. firewall rules

    4. IPV4-INCOMING chain

    5. logging

    6. online tutorials

    7. packet filtering and shaping

    8. rate limiting and securing

    9. TCP/IP-based network

    10. Ubuntu and CentOS

  17. IPv4

SeeInternet Protocol version 4 (IPv4)

  1. IPv6

  2. ISO file

J

  1. Java process

  2. JobDefs directory

  3. Journald

    1. journalctl command

      1. filters

      2. ten lines of journal

      3. without arguments/filters

    2. journal-remote

    3. journal with FSS

  4. Journaled filesystem

K

  1. Kerberos

  2. Kernel

  3. Kibana

    1. advanced settings tab

    2. configure index pattern

    3. log events

    4. saved objects tab

    5. SERVICE_STOP

  4. Kickstart

    1. bootloader

    2. disks and partitions

    3. firewall and network

    4. installation source

    5. keyboard, language and time zone

    6. managing users

    7. package management

    8. pre-and post-installation

    9. preseed

    10. requirement

  5. Killing

L

  1. LDAP Account Manager (LAM)

    1. Apache virtual host

      1. Linux(Unix) details

      2. listing user

      3. login

      4. shadow details

      5. user

      6. web GUI

    2. installation and configuration

    3. web-based GUI

  2. LDAP Directory Interchange Format (LDIF)

  3. ldapmodify

  4. LF

SeeLine feed (LF)

  1. Library packages

  2. Lightning Memory Mapped Database (LMDB)

  3. Lightweight Directory Access Protocol (LDAP)

    1. Apache authentication

    2. authentication of web services

    3. backup

    4. clients

    5. defined

    6. delete entries

    7. management and tools

    8. replication

    9. tool options

    10. tree

  4. Line feed (LF)

  5. Linode

  6. Linux-image

  7. Linux Standard Base (LSB)

  8. List (ls) command

  9. LiveCDs

    1. burn ISO files

    2. CentOS

    3. Fedora

    4. installations

    5. Linux distributions

    6. Ubuntu

  10. Log analysis and correlation

  11. Logger

  12. LogicalDoc

  13. Logical volume management (LVM)

    1. commands

    2. expand

    3. groups

    4. introduction

    5. shrink

    6. volumes

  14. Login

  15. Login messages

  16. Log rotation

    1. command-line options

    2. options

    3. postrotate command

    4. prerotate command

  17. Logs

  18. Logstash

    1. codec plug-ins

    2. configuration files

    3. defined

    4. Elasticsearch

    5. filebeat

    6. filters

    7. grok function

    8. input plug-ins

    9. Java process

    10. Kibana

    11. monitor host

    12. mutate function

    13. rsyslog

    14. rubydebug

    15. Ruby syntax

  19. Long-term support (LTS)

  20. Lookup tables

  21. Loopstats, NTP

  22. LVM

SeeLogical volume management (LVM)

M

  1. MAAS

SeeMetal As A Service (MAAS)

  1. Mac OS X

  2. Magnetic tapes

  3. Mailbox

  4. Mail delivery agents (MDAs)

  5. Maildir

  6. Maildrop package

  7. Mail filters

  8. Mail transfer agents (MTAs)

  9. Maintenance mode

  10. Makefile

  11. man command

  12. Mandatory Access Control (MAC)

  13. Manifests

  14. Man-made disaster

  15. MariaDB

    1. administration

    2. databases

    3. to MySQL versions

    4. storage engines

  16. Master boot record (MBR)

  17. Maximum transmission unit (MTU)

  18. Mbox

  19. MediaWiki

  20. Memory

  21. Messaging directory

  22. Metal As A Service (MAAS)

  23. Meta users

  24. Microsoft Windows

    1. Linux vs .

      1. command line

      2. GUI desktop

      3. shells

      4. type commands

    2. services

  25. Mirroring

  26. Mobile VPN

    1. clients

    2. configuring

    3. routing

  27. Modprobe

  28. Moodle

  29. Mozilla Thunderbird

  30. Multiple selectors

  31. Multiprocessing modules (MPMs)

  32. Multiuser mode

  33. Multiuser operating system

  34. MX record

  35. mydb database

N

  1. Nagios

    1. alias attribute

    2. Apache basic authentication

    3. authenticated contacts

    4. authenticated users

    5. authorization directives

    6. CentOS

    7. check_by_ssh plug-in

    8. check_command

    9. console

    10. contact groups

    11. -core

    12. debug

    13. functions

    14. hosts detail screen

    15. host templates

    16. htpasswd command

    17. ICMP

    18. logs

    19. macro

    20. nagios.cfg

    21. notification period

    22. plug-ins

    23. plug-in status conversions

    24. process information screen

    25. remote hosts

    26. service detail screen

    27. ssh command

    28. systemctl command

    29. Tactical Monitoring Overview screen

    30. template

    31. time periods

    32. troubleshoot

    33. Ubuntu

  2. Name-based virtual hosts

  3. Netcat (nc)

  4. NetBIOS

  5. Netfilter

  6. Net installer

  7. Network address translation (NAT)

  8. Network File System (NFS)

    1. linux to linux

    2. troubleshoot

  9. Network mount

  10. Networks

    1. architecture

    2. backups

    3. configuration

      1. bonded interfaces

      2. CentOS

      3. multiple IP addresses

      4. Ubuntu

    4. IP Addressing

    5. SaaS

    6. subnetting

    7. TCP/IP

    8. TCP Wrappers

  11. Network Time Protocol (NTP)

    1. access control

    2. configuration

    3. cron method

    4. driftfile directive

    5. filegen directive

    6. loopstats

    7. ntpdate

    8. pool

    9. strata

    10. system clock

  12. Network Time service

  13. newaliases command

  14. Nginx

  15. Nis schema

  16. nmcli

  17. nmtui

  18. Noninteractive mode

  19. Noop scheduler

  20. NRPE

  21. NSCA

O

  1. Object classes

  2. Object identifier (OID)

  3. Octal notation

  4. OEM

SeeOriginal Equipment Manufacturer (OEM)

  1. OnCalendar option

  2. OpenKM

  3. OpenLDAP

    1. CentOS installation guide

    2. configuration

    3. requirements

    4. slapd

    5. Ubuntu installation guide

  4. Open relay

  5. OpenVPN client configuration

  6. OpenVPN tunnel testing

  7. Opportunistic TLS

  8. Optional flag

  9. Organizational units

  10. Original Equipment Manufacturer (OEM)

  11. Orphan process

P

  1. PaaS

SeePlatform as a Service (PaaS)

  1. Package management

    1. CentOS, Application Installer

    2. compiling from source

      1. compile and make

      2. configure

      3. install

      4. uninstall

    3. defined

    4. introduction

    5. Ubuntu

      1. software app

  2. Package manager

  3. Packages

  4. PAM

  5. Partitions

    1. disks and

    2. fdisk

    3. filesystem

    4. IDs and types

    5. introduction

    6. to /etc/fstab

  6. Partition table

  7. Passphrase

  8. passwd command

  9. Password aging

  10. Password Policy (ppolicy)

    1. overlay

  11. Passwords

    1. aging

    2. introduction

  12. Path

  13. Permissions

    1. class

    2. File breakdown

    3. octal notation

    4. setgid

    5. setuid

    6. types

    7. umask

  14. PHP

  15. Physical volume (PV)

  16. Pipelining

  17. Piping

  18. Platform as a Service (PaaS)

  19. Playbook tasks

    1. definition

    2. running

  20. Pluggable Authentication Modules (PAM)

    1. configure

    2. control flags

    3. directives

    4. introduction

    5. login

    6. Ubuntu login

  21. Pool.ntp.org project

  22. Pools directory

  23. postalias command

  24. Postfix

    1. authentication

      1. Dovecot’s SASL

      2. SMTP AUTH and SASL

      3. test

    2. CentOS installation

    3. ClamAV

    4. configuration

    5. edit

    6. encryption

      1. SSL certificates

      2. TLS

    7. help

    8. initial configuration

    9. lookup tables

    10. start

    11. test

    12. Ubuntu installation

    13. virtual domains

  25. Post Office Protocol (POP3)

  26. Power-on self-test (POST)

  27. PowerShell

  28. PPP service

    1. ADSL

      1. dsl-provider

      2. modem/concentrators

      3. nmcli

      4. pppoeconf

      5. Ubuntu

  29. Preboot Execution Environment (PXE)

  30. Preseeding

  31. Primary domain controller (PDC)

  32. Primary group

  33. Print servers

  34. Private enterprise number (PEN)

  35. Process ID (PID)

  36. Proc filesystem

  37. Proposed VPN configuration

  38. Public key encryption

  39. Public key infrastructure (PKI)

  40. Puppet masters

  41. PuTTY client

  42. pwd command

  43. Python3

Q

  1. Querying name servers

R

  1. Rackspace

  2. RAM

  3. Raspberry Pi

  4. Read permissions

  5. Read plug-ins

  6. Real-time blackhole lists (RBLs)

  7. Reboot

  8. Red Hat

  9. Red Hat Enterprise Linux Advanced Platform (RHELAP)

  10. Red Hat Enterprise Linux (RHEL)

    1. CentOS

    2. Fedora Project

    3. free of charge

    4. RHELAP

    5. server platforms

  11. Red Hat Package Management (RPM)

    1. install

    2. introduction

    3. query

    4. remove

    5. from source

  12. Redirection

  13. Redundant Array of Inexpensive Disks (RAID)

    1. array

    2. fake

    3. hardware

    4. introduction

    5. mdadm command

    6. processor to rescue

    7. software

    8. striping and mirroring

    9. types

  14. Regex style

  15. Regular expressions

  16. Relative distinguished name (RDN)

  17. Reliable event logging protocol (RELP)

    1. client

    2. defined

    3. server

  18. Remote access

    1. help

    2. SSH

  19. Remote host

  20. Replicated volume

  21. Repositories

  22. Require directive

  23. Required flag

  24. Requisite flag

  25. Rescue mode

  26. Reserved blocks

  27. Resource Abstraction Layer (RAL)

  28. Resource record sets (RRsets)

  29. Resource record signature (RRSIG)

  30. Reverse lookup zones

  31. Reverse proxy

  32. Ring buffer

  33. Root certificate

  34. Root directory

  35. Root name servers

  36. Root password

  37. Root user

  38. Root volume

  39. Root zone

  40. Round-robin database (RRD)

  41. Routing

  42. Rsync

    1. backup script

    2. crontab

    3. introduction

    4. options

    5. over SSH

      1. authorized_keys

      2. Bash script

      3. chroot jail

    6. test

  43. Rsyslog

    1. actions

    2. combine multiple selectors

    3. configuration

    4. facilities

    5. priorities

    6. start

    7. stop

    8. syslog

    9. uses UDP port 514

  44. rsyslogd daemon

  45. Ruby code

  46. Ruby hash syntax

  47. Runlevels

S

  1. S3 buckets

    1. AWS user policies

    2. Glacier storage

    3. life-cycle option

    4. life-cycle policy

    5. our-backups

    6. test

  2. Safe-upgrade

  3. Samba

    1. AD

    2. configuration

    3. DNS test

    4. interactive mode

    5. introduction

    6. iptables rules

    7. Kerberos test

    8. linux

    9. Mac OS X

    10. test

    11. tool

    12. users

    13. variable substitutions

  4. Schedules directory

  5. Schema

    1. cosine

    2. creation

    3. definition

    4. ldapsearch

    5. nis

    6. slaptest command

    7. vi editor

  6. Sealing key

  7. Secure Shell (SSH)

    1. agent

    2. check_by_ssh plug-in

    3. client configuration

    4. configuration

    5. defined

    6. file transfer

    7. Git Bash

    8. introduction

    9. keys

    10. PuTTY client’s

    11. TCP/IP

    12. tunnelng

  8. Secure Sockets Layer (SSL)

  9. Security Content Automation Protocol (SCAP)

  10. Security profile

  11. Self-signed certificates

  12. SELinux

  13. Sender Policy Framework (SPF)

  14. Sendmail

  15. Service configuration files

  16. Services

    1. check_command

    2. check_smtp

    3. defined

    4. disable

    5. enable

    6. local-service

    7. manage

    8. systemd

  17. Setgid permissions

  18. Shadow passwords

  19. SHA512 hashes

  20. Shell

    1. command aliases

    2. configuration

    3. environment variables

  21. Shut down

  22. Sieve

  23. Signatures

  24. Simple Authentication and Security Layer (SASL)

    1. Dovecot

    2. SMTP AUTH and

  25. Simple Mail Transfer Protocol (SMTP)

  26. Simple method

  27. Single sign-on

  28. Single-user mode

  29. SKEL option

  30. Slapd

    1. OpenLDAP

    2. run

    3. with TLS

  31. slaptest command

  32. Slave server

  33. Small Computer System Interface (SCSI)

  34. Smarthosts

  35. Snapshots

  36. Socket

  37. Soft fail state

  38. Software RAID

  39. Source Network Address Translation (SNAT)

  40. Sources directory

  41. Spam

    1. defined

    2. Maildir directory

    3. Postfix for Antispam

    4. Sieve

  42. SpamAssassin

    1. help

    2. install and configure

    3. Postfix

    4. test

  43. spamc command

  44. Spamd daemon

  45. Specs directory

  46. Splash screen

  47. SQL database

    1. configuration

    2. installation

    3. introduction

    4. MariaDB administration

    5. MariaDB databases

    6. MariaDB storage engines

    7. server test

    8. users and privileges

    9. XtraDB

  48. Squid-Cache

    1. ACLs

    2. client configuration

    3. configuration

    4. transparency

    5. web accelerator

  49. SRPMS directory

  50. SSF

  51. sssd

  52. Standard Technical Implementation Guide (STIG)

  53. Start of Authority (SOA)

  54. Stateless address autoconfiguration (SLAAC)

  55. Static addresses

  56. Statistics-file

  57. Sticky permissions

  58. Storage

  59. Storage daemon

  60. Storage devices

  61. Strata

  62. Striped volume

  63. Striping

  64. sudo command

    1. CentOS

    2. command-line options

    3. configure

    4. send e-mail

    5. Ubuntu

    6. unauthorized

    7. using

  65. Sufficient flag

  66. Superblock

  67. Supplementary groups

  68. Support models

  69. Swap memory

  70. Swap space

  71. Symbolic links

  72. sysctl

  73. syslog

  74. System administrators

  75. System clocks

  76. systemctl command

  77. systemd

    1. AllowIsolate option

    2. CentOS

    3. EnvironmentFile

    4. ExecStart option

    5. install section

    6. load path

    7. Restart option

    8. Service sections

    9. targets to boot to rescue mode

    10. timers

      1. Cron

      2. OnCalendar option

      3. section

    11. UMask sets

    12. unit files

    13. unit section

  78. SystemV

  79. SysV init

  80. SysV init.d

T

  1. Tarball file

  2. TCP

  3. TCP Wrappers

  4. Terminal emulator tool

  5. Terminator

    1. install

    2. more information

    3. remove

    4. search

  6. Test Driven Development (TDD)

  7. Thunderbird, Mozilla

  8. timedatactl command

  9. Time, NTP

  10. Time-series database

  11. Time to live (TTL)

  12. Top-level domains (TLDs)

  13. Transmission control protocol/internet protocol (TCP/IP)

    1. OSI model

    2. socket

  14. Transmission Control Protocol (TCP)

  15. Transparent proxy

  16. Transport Layer Security (TLS)

  17. Trivial File Transfer Protocol (TFTP)

  18. Troubleshooting

    1. diagnostic information

    2. resources

    3. restart installation

    4. network

      1. chains

      2. diagnostic tools

      3. dig

      4. Firewalld

      5. MTR

      6. NAT

      7. Netcat

      8. Netfilter/iptables

      9. ping

      10. policy

      11. routes and forwarding packets

      12. tables

      13. tcpdump

      14. ufw

    5. OpenVPN

  19. Trusted facts

  20. Trusted pool

  21. tune2fs

  22. Tunneling protocol

  23. TXT record

U

  1. Ubuntu

    1. adduser command

    2. admin

    3. backports

    4. bond device

    5. command-line login

    6. Debian

    7. DHCP

    8. diagnostic information

    9. EFI partition

    10. GUI tool

    11. LiveCDs

    12. login PAM service configuration file

    13. Nagios

    14. OpenLDAP

    15. PAM

    16. parameters

    17. PID

    18. Postfix

    19. runlevel

    20. server installation

      1. applications for host

      2. assumptions

      3. automatic install system updates

      4. base system requirements

      5. booting

      6. configure mail server

      7. decrypt hard drives

      8. disk encryption password

      9. disks partitions

      10. full name of new user

      11. GRUB

      12. home directory

      13. installation complete

      14. language

      15. LVM partition

      16. master boot record

      17. Metal As A Service

      18. MySQL database

      19. origin of keyboard

      20. password for new user

      21. proxy server settings

      22. select keyboard

      23. select region

      24. setting hostname

      25. splash screen

      26. sudo command

      27. time zone

      28. username

    21. sudo command

    22. SysV init.d

    23. unity desktop

    24. useradd command

  2. Udev

  3. ulimit command

  4. Umask

  5. Unified Extensible Firmware Interface (UEFI)

  6. Unity desktop

  7. Universal unique identifier (UUID)

  8. Update-rc.d command

  9. Upstart

  10. Upstream RPMs

  11. Uptime command

  12. USB drive

  13. useradd command

  14. User class

  15. User Datagram Protocol (UDP)

  16. User ID (UID)

  17. User private group (UPG)

  18. Users

    1. auditing access

    2. control

    3. create

    4. default settings

    5. delete

    6. disable

    7. GUI

    8. store data

    9. working with

  19. User space filesystem

  20. UUID

SeeUniversal unique identifier (UUID)

V

  1. Vagrant

    1. base box

    2. box

    3. concepts

    4. Git Bash terminal

    5. installation

    6. integrates with virtualbox

    7. introduction

    8. licensing

    9. options

    10. SSH

    11. start with

    12. status

    13. subcommands

    14. up

    15. Vagrantfile

    16. vagrant init

  2. VDI

SeeVirtualBox Disk Image (VDI)

  1. Verify key

  2. Version control systems (VCS)

  3. VirtualBox

    1. installation

      1. Centos7

      2. CentOS ISO ready

      3. Choose disk

      4. console

      5. disk amount

      6. dynamically disk allocation

      7. licensing

      8. memory allocation

      9. memory size

      10. naming and setting

      11. select image

      12. VirtualBox Disk Image

  4. VirtualBox Disk Image (VDI)

  5. VirtualBox host

  6. Virtual domains

  7. Virtual host, Apache

    1. apachectl command

    2. curl command

    3. IP-based

    4. name-based

    5. PHP

    6. Ubuntu

  8. Virtualization

  9. Virtual Machine Manager

    1. information screen

    2. installation

    3. pending installation

    4. select

  10. Virtual Machines

  11. Virtual private network (VPN)

    1. application

    2. authentication

    3. branch server

    4. configuring

    5. gateway server

    6. head office with hosts

    7. installation

    8. IP address

    9. mobile users

    10. platforms

    11. private network

    12. software

    13. start and stop services

  12. Virtual users

  13. Viruses

  14. visudo command

  15. vmstat

  16. VRFY command

W

  1. Web accelerator

  2. Web applications

  3. Web-based GUI

  4. Web caching

  5. Web presence

  6. Web server

  7. Web services

  8. Web-UI

  9. wget command

  10. Whisper

  11. whoami command

  12. who command

  13. Whois command

  14. Winbind

  15. WordPress

    1. administration console

    2. administration details

    3. edit

    4. installation

    5. login

    6. password

  16. Workgroup

  17. Wrapper script

  18. Write permissions

  19. Write plug-ins

X

  1. X application

  2. X.500 DAP OSI model

  3. XFS filesystem

  4. XtraDB engine

Y

  1. YAML

  2. Yellowdog Updater Modified (YUM)

    1. additional tasks

    2. configure

      1. repository options

      2. variables

    3. DNF

    4. install

    5. introduction

    6. options

    7. remove

    8. repositories

Z

  1. Zen Discovery module

  2. Zombie process

  3. Zone metadata

  4. Zones

    1. defined

    2. forward lookup

    3. header fields

    4. reverse lookup

    5. rezone

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