RedHat Study Notes-Basic tutorial

Take the following notes for RedHatLinux certification. There are two parts: Basic tutorial and Enterprise Service tutorial. Part 1 Basic Redhat tutorial Chapter 1 prerequisites: • There are two common file systems in Linux:-ext3/ext4 (used to store files) -swap (used to temporarily save content in memory)-It will install the Grub boot program in MBR (Master Boot Record). If Windows has been installed on the computer, grub/LILO

Take the following notes for RedHat Linux certification. There are two parts: Basic tutorial and Enterprise Service tutorial.

Part 1 Basic Redhat tutorial

Chapter 1 prerequisites:
• There are two common file systems in Linux:
-Ext3/ext4 (used to store files)
-Swap (used to temporarily save content in memory)

-It will install the Grub boot program in MBR (Master Boot Record). If Windows has been installed on the computer, Grub/LILO will automatically configure

Set to double start Mode
 
• Mount a DVD image or CD
Mount/source-o loop-t/mnt/ISO

Mount/dev/cdrom/mnt/cdrom

• Common tools: securtCRT, a commonly used connection tool, and FileZilla

Chapter 2 system boot and startup

Startup Process:

• 1. Load bios hardware information
• 2. Read Boot Loader Boot information of MBR
• 3. Load the kernel
• 4. Run/sbin/init to load/etc/inittab and run rc. sysinit.
• 5. Start the core plug-in Module (/etc/modules. conf)
• 6. Various batch processing files (scripts) at the execution level of init)
• 7. Run the/bin/login program
• 8. After logging in, you can use shell to manage hosts.
Details:/etc/inittab and runlevel
• Initdefault: indicates the default run level value;
• Sysinit: indicates the action item initialized by the system;
• Ctrlaltdel: Specifies whether the three buttons [ctrl] + [alt] + [del] can be restarted;
• Wait: indicates that the subsequent command project must be executed to continue the subsequent action;
• Respawn: indicates that init will continue to start automatically "re" later.
Rc. sysinit: sets the system Host Name, activates SWAP partitions, loads modules, sets RAID/LVM hard disks, disk quotas, mounts other file systems, clears temporary files, and loads logs.