Red Hat System Admin I RH124 Certification - Unisoft India
Course Content:
Installation of Red Hat
- Required Hardware For Installation
- Obtaining Red Hat Enterprise Linux
- Booting the Installer
- Configuring Language and Installation Source
- Creating Partitions
- Creating User
Accessing the Command Line
- Accesing command line using Local Console
- Accesing command line using the Desktop
- Introduction to Shell
- Executing Commands Using the Bash Shell
Basic Commands I
- Bash Concepts
- tty, whoami, who, w, users
- Linux user accounts: Super, System, Normal
- User --> uid. User --> has a primary group. Group --> gid
- id, groups, lsusb, lspci, cal (cal 9 1752), date, echo,
Managing Files From Command Line
- The Linux File System Hierarchy
- Managing Files Using Command-Line Tools
- Finding command executable with which.
- Important directories like /bin/, /boot/, /dev/, /etc/, /home/, /lib/, /mnt,/opt/, /proc/, /root/, /sbin/, /tmp/, /usr/, /var/
Getting Help from System
- Manual Pages : man
- Information Pages : info, pinfo
- Whatis Database : whatis, makewhatis, apropos
Basic Commands II
- Creating Directories : mkdir
- Copying Files and dirs : cp
- Moving Files and dirs : mv
- Removing Files and dirs : rm
- Reading Files using cat,head,tail,less,more
- I/O redirectors and pipe
VIM Editor
- Editing Files in Command Line with vi-clone VIM
- Creating encrypted file with vim
Substituting User Identities
- su command to sustitute user identity
- /etc/sudoers file and sudo (substitute user and do) command
- BASH login-shell and non-login shell
Users and Groups Administration
- Creating Users using useradd command and setting their password with passwd command
- Important files which stores user account information : /etc/passwd,/etc/shadow
- Modifying User Properties using usermod command
- Password age using chage command
- Deleting Users using userdel command
- Creating Groups using groupadd command and assigning passwords to them with gpasswd command
- Important files which stores group information : /etc/group, /etc/gshadow
- Modifying Group Properties using groupmod command 9. Deleting Groups using groupdel command
- Creating new user and setting its password without using useradd and passwd command
Permissions I
- ls -l output explained
- Linux File Types (files, directories, device files [character and block], sockets, pipe, links)
- Default permissions on a file and directory (concept of UMASK).
- Finding files in Linux file system using find command
- Changing permissions (alphabetical and numerical) using chmod
Permissions II
- Finding command executable using which command
- Special permissions: SUID, SGID, Sticky Bit
Networking
- Introduction to networking and IP addressing
- Setting up an IP address to the machine using nmcli and nmtui utility
- Setting up an IP address to the machine directly in file
- Introduction to Gateway, Name resolution (local and DNS)
- Commands: ifconfig, ip, route, traceroute, dig, host, nslookup, hostnamectl, nmcli, nmtui
Contolling Services & Daemons
- Introduction to Booting Process
- Identifying Automatically Started System Process
- Controlling System Services
- Using Systemctl to Manage Services
Package Management
- Installing Packages using RPM.
- Configuring YUM client repositories.
- Configuring YUM Server
- Configuration of EPEL, REPOFORGE, RPMFUSION repositories
Remote Shell Access
- Secure Remote shell access using ssh
- Password less SSH Authentication with SSH Keys
- Securely Copy files to and from remote machines using scp.
Backup and Restore
- Archive and Compress files using tar.
- Remote Incremental backup using rsync.
Analyze and Store Logs
- Locate and accurately interpret relevant system log files for troubleshooting purposes.
Accessing Linux File Systems
- Identify Filesystem and Devices
- Mounting Unmounting File System
- Making Links Between Files
- Locating Files using find and locate command
NTP server
- Configuration of Ntp server
- configuration of Ntp client
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