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Solaris System Management - Understanding System Concepts Randy Marchany VA Tech Computing Center va-scan Copyright 2002, Marchany Defining Terms Daemon – system program that runs in the background, disconnected from a terminal or a particular login session. Process – an instance of a running program Shell – command line interface between the user and the system. The actual commands – Bourne – located in /bin/sh, uses $ prompt – C – located in /bin/csh, uses a % prompt – Korn – best of both, located in /bin/ksh, uses $ prompt va-scan Copyright 2002, Marchany Exercise 1 Log into system Use the ps command to list the running processes. – ps –ef Use ‘man’ command to get more info on commands. Change to the different shells – – – va-scan– csh Press control-D ksh, observe prompt, press control-D Copyright 2002, Marchany sh, observe prompt, press control-D Defining Terms File System – collection of directories and files organized in a hierarchical tree structure. It has 11 correspondence to physical storage. Root filesystem (/) is the parent of all filesystems. Mount Point – the directory name on the parent file system where a separate file system may be attached. Operating System – the set of programs that manage all system operations and user communications. va-scan Copyright 2002, Marchany Defining Terms Kernel – the core of the operating system. It relays instructions to the hardware, schedules and executes all the system commands. Located in: – /kernel – directory contains all common kernel components – /platform/<platform-name>/kernel – kernel components for a specific architecture (sparc or Intel) – /platform/<hardware-class-name>/kernel – contains the kernel components specific to this HW class – /usr/kernel – contains kernel components common to all platforms within a particular instruction set. va-scan Copyright 2002, Marchany