Cyclades PC400 Appendix a Information for Users not Familiar with Linux, Users and Passwords

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Cyclades-PC400

Installation Manual

APPENDIX A INFORMATION FOR USERS NOT FAMILIAR WITH LINUX

Users and Passwords

A username and password are necessary to log in to a Linux system. A unique password should be configured as soon as possible to avoid unauthorized access to your network.

Type the command:

passwd

to create a password for the root user.

To create a regular user (without root privileges), use the commands:

adduser user_name passwd user_password

Linux File Structure

The Linux file system is organized hierarchically, with the base (or root) directory represented by the symbol “/”. All folders and files are nested within each other below this base directory. The directories located just below the base directory are:

Appendix A - Linux

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Contents Cyclades-PC400 Cyclades-PC400 Installation Manual FCC Warning StatementCanadian DOC Notice Table of Contents Appendix B Hardware Specifications Upgrades of Software and Manuals What is in the BOXHardware Installation Step OneStep Two Step Three Step Five Step FourSoftware Installation Software Installation Make config Make menuconfig Board and System Configuration Step ONEStep TWO Dspprofilebegin InterfnNbegin Label Description ISDN-PRI Profile Parameters Interface Parameters USA AT&T Pc400load Last or channelnumberchannelnumberchannelnumber etcPc400util -p Step ThreeStep Four Guided Examples for the Most Common Applications Step FiveISDN-BRI LANRAS DIAL-IN Application Parameters Parameter Description Value for T1 Value for E1 Line∙∙∙ Example 2 a LAN-to-LAN Example Using Channels LANETH0 10 Multiple LAN-TO-LAN Application Parameters ∙∙∙ General Tips TroubleshootingRoot@cyclades common# ./pc400hwtest Hardware TestGlobal Test ESC Previous Menu G Global E ErrorsPasses Pg0 Board DSP U19 U06 U20 U07ESC Previous Menu G Global E ErrorsAdministrative Utilities Appendix a Information for Users not Familiar with Linux Users and PasswordsPasswd Linux File StructureCp filename destination Basic File Manipulation CommandsMode What is done there How to Get There Vi EditorVi filename Routing Table Net-host Netstat -rnNetmask Ssh The Secure Shell SessionPID TTY Stat Time Command Loading the Configuration FileProcess Table Get information from the board Minute hour date month day-of-week user commandSyslog Crond UtilityDhcp Dynamic Host Configuration Protocol Client Active root /etc/tstcron.src59 * * * * /etc/testcron.sh Packet Filtering using ipchains Interface is Accept DenyCyclades-PC400 Installation Manual RJ-48C Signal Pin RxTip RxRing TxTip TxRing Appendix B Hardware SpecificationsCyclades Philippines