Solaris patch installation

Solaris patch installation

‘patchadd’ is the command to install patches in solaris

eg. $ patchadd 99-118025

For removing installed patch from OS

$ patchrm 99-118025

Redhat package installation (rpm)

For installing an rpm

rpm –ivh package name

$ rpm –ivh squid-2.6.STABLE6-3.el5.i386.rpm

For removing a package

rpm –e package name

eg. $ rpm –e squid-2.6.STABLE6-3.el5.i386

For installing an rpm with dependencies

rpm –ivh package name --deps

Linux backup with dump command

Document in progress......

Solaris backup with ufsdump

Document in progress......

Unix File permissions

0 --- no permission
1 --x execute
2 -w- write
3 -wx write and execute
4 -- r-- read
5 --r-x read and execute
6 --rw- read and write
7 --rwx read, write and execute

Run levels in Solaris

Document in progress....

Run Levels in Linux

Runlevel 1: Single user mode

Runlevel 2: Basic multi user mode without NFS

Runlevel 3: Full multi user mode (text based)

Runlevel 4: unused

Runlevel 5: Multi user mode with Graphical User Interface

Runlevel 6: Reboot System

Solaris-SPARC The Boot Process

SPARC: The Boot Process

The following table describes the boot process on SPARC based systems.

Table 15–1 SPARC: Description of the Boot Process

Boot Phase	Description
Boot PROM	1. The PROM displays system identification information and then runs self-test diagnostics to verify the system's hardware and memory.
	2. Then, the PROM loads the primary boot program, bootblk, whose purpose is to load the secondary boot program (that is located in the ufs file system) from the default boot device.
Boot Programs	3. The bootblk program finds and executes the secondary boot program, ufsboot, and loads it into memory.
	4. After the ufsboot program is loaded, the ufsboot program loads the kernel.
Kernel Initialization	5. The kernel initializes itself and begins loading modules by using ufsboot to read the files. When the kernel has loaded enough modules to mount the root (/) file system, the kernel unmaps the ufsboot program and continues, using its own resources.
	6. The kernel creates a user process and starts the /sbin/init process, which starts other processes by reading the /etc/inittab file.
init	7. The /sbin/init process starts the run control (rc) scripts, which execute a series of other scripts. These scripts (/sbin/rc*) check and mount file systems, start various processes, and perform system maintenance tasks.