Tag: System

20 Mount and Unmount Filesystem / Partition commands in Linux / UNIX

by scmgalaxy KUnix / LinuxLeave a Comment on 20 Mount and Unmount Filesystem / Partition commands in Linux / UNIX
partition-commands-in-linux-unix
Once you create a partition, you should use mount command to mount the partition into a mount point (a directory), to start using the filesystem.
You need to add the -t FILESYSTEMTYPE argument to the command, replacing FILESYSTEMTYPE with your filesystem type.valid filesystem types are:
auto – this is a special one. It will try to guess the fs type when you use this.
ext4 – this is probably the most common Linux fs type of the last few years
ext3 – this is the most common Linux fs type from a couple years back
ntfs – this is the most common Windows fs type or larger external hard drives
vfat – this is the most common fs type used for smaller external hard drives
The general mount command syntax to mount a device:
> mount -t type device destination_dir
Mount a CD-ROM
> mount -t iso9660 -o ro /dev/cdrom /mnt
In the above example, the option “-o ro” indicates that the cdrom should be mounted with read-only access. Also, make sure that the destination directory (in the above example, /mnt) exist before you execute the mount command.
View All Mounts
> mount
You can also use df command to view all the mount points.
Mount all the filesystem mentioned in /etc/fstab
The filesystems listed in /etc/fstab gets mounted during booting process. After booting, system administrator may unmount some of the partitions for various reasons. If you want all the filesystems to be mounted as specified in /etc/fstab, use -a option with mount as shown below:
> cat /etc/fstab
> mount -a
Access contents from new mount point
> mount -M /mydata /mnt/
Mount an iso image into a directory
> mount -t iso9660 -o loop pdf_collections.iso /mnt
Unmount

The same -a option can be used with umount to unmount all the filesystems mentioned in /etc/mtab

Example

# mount –t ext2 /dev/hda3 /oracle A empty directory must be made before mounting in linux
# unmounts /oracle
# unmounts /dev/hda3   Linux
# mount –a   This run when system boot
# unmont –a     This runs when shutdown sequence runs
# mount –t vfat /dev/hda1 /windows     Windows Partition – Linux
# mount configuration file – /etc/fstab
# default file system for mount in Linux is ext2
Reference
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Main Responsibilities of the Linux System Administrator | What Linux System Administrators do ?

by scmgalaxy KUnix - LinuxLeave a Comment on Main Responsibilities of the Linux System Administrator | What Linux System Administrators do ?

linux-system-administrators-responsibilities

Main Responsibilities of the Linux System Administrator is as follows:

  1. Maintaining User Accounts
  2. Security
  3. Managing the disk space and Backup
  4. Provisiom the new Linux Server based on the need
  5. Linux Server Updates and Patching
  6. Authentication and Authorization Management
  7. Trubleshooting of Linux Severs and QA Deployments
  8. Managing the Large number of VMS in VMWARE
  9. Montoring all the vms and their health
  10. Montoring Major Important Services
  11. Backup & Restore all the imporant data of the servers
  12. Server and OS process monitoring
  13. Disk managment and montoring

The Administrator’s Privileges:

  1. Change the contents or attributes of any file like its permission and ownership
  2. He can delete any file eith rm even if it is write-protected.
  3. Initiate or Kill Any Process
  4. Change any user’s password without knowing the existing one
  5. Set the system clock with date
  6. Limit the maximum size of files that users are permitted to create with ulimlit
  7. Controls users access to the scheduling services like at and cron
  8. Control users access to many networking services like Telnet, FTP, etc

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List of Free Issue Tracking / Bug Tracking System

by scmgalaxy Kssue-Bug Tracking SystemLeave a Comment on List of Free Issue Tracking / Bug Tracking System

free-issue-tracking-bug-tracking-system

An issue tracking system (also called trouble ticket system or incident ticket system) is a computer software package that manages and maintains lists of issues, as needed by an organization. Issue tracking systems are commonly used in an organization’s customer support call center to create, update, and resolve reported customer issues, or even issues reported by that organization’s other employees. An issue tracking system often also contains a knowledge base containing information on each customer, resolutions to common problems, and other such data. An issue tracking system is similar to a “bugtracker”, and often, a software company will sell both, and some bugtrackers are capable of being used as an issue tracking system, and vice versa.

A

aDefHelpDesk
An open source DotNetNuke based help desk module.

Asset Tracker
Create multiple asset databases containing any information you wish to keep track of. Some examples: put all your IT infrastructure into the database, or if you are a building manager, put all your facilities equipment in the database. Can also integrate with other systems via plugins.

Astres
A PHP based help desk tool, translations in English and French.

B

Bartley Helpdesk
a light weight helpdesk for small to medium size IT departments, includes inventory management.

BATTS
Open source help desk software, designed for use from a Linux/Unix command line. Includes a full featured email interface for customers.

Big Help
A help desk portal built with Ruby on Rails.

BugTracker.NET
BugTracker.NET is an open source, web based bug or issue tracker written using ASP.NET, C#, and Microsoft SQL Server/MSDE. Includes a screen capture utility that allows you to capture a screenshot, annotate it, and post it, with just a few clicks.

Bugzilla
A Perl based software bug tracking system which can also be used for help desk support. Used by the Mozilla Foundation, creators of FireFox.

D

DITrack
Software bug and ticket system designed to use Subversion as it’s backend database. Currently there is only a command line interface.

Double Choco Latte
A GNU Enterprise package that handles both call tracking and project management. It can be displayed inside of a phpGroupWare installation or be used stand-alone.

E

eTicket Support
eTicket is a PHP-based electronic support ticket system.

Eventum
An open source help desk software package from the creators of the MySQL database. PHP based and of course uses MySQL for it’s database.

F

Flyspray

H

Help Desk Lite
Very simple help desk software package for basic issue tracking. It provides two major functions, service ticket tracking and operator assignment.

Help Desk Reloaded
A PHP based help desk software system. Key features include trouble ticket prioritization, multiple customer support technicians, and search.

Helpdesk Issue Manager
Open source helpdesk software tool. Runs on PHP and PostgreSQL.

I

Information Resource Manager
IRM is a PHP based help desk and asset tracker designed for IT departments.

Information Resource Manager – GLPI Edition
This is the same system as above (IRM), but with some additional enhancements.

IssueTrackerProduct
Zope issue tracker which also handles software bugs. The primary focus is on email communication and request tracking and management.

itracker
Java based open source help desk application with an emphasis on modularity. It’s also provides i18n support.

J

JTrac
A Java based open source issue tracking system.

Jutda Helpdesk
A Django-powered ticket tracking system for small enterprise.

L

Liberum Help Desk
Web based help desk software package written in ASP and VBScript. Microsoft SQL Server or Access is required. Automatic case routing, email updates, and reporting.

M

Mantis
A PHP software bug tracking and issue tracking system.

O

One or Zero
Open source help desk software package optimized for task oriented help desks.

OpenPsa
A full project system where the help desk component is just one aspect. Automatically integrates with Midgard CMS.

OpenCSM
An open source help desk solution with a telephony component.

OS Ticket
OS Ticket is a lightweight ticking system designed to be easy to setup and use. It’s written mostly in PHP.

OTRS
A trouble ticket system to track telephone calls and e-mails. Designed to allow your support, sales, pre-sales, billing, internal IT, and helpdesk to operate in one system. OTRS is open sourced under the GPL and is written in Perl.

P

phpBugTracker
A web-based software bug tracker. The design focuses on separating the presentation, application, and database layers making customization easier.

R

Redmine
Redmine is a flexible project management web application. Written using Ruby on Rails framework, it is cross-platform and cross-database.

Request Tracker
RT is an open source ticket tracking tool. It’s primary interface is email with a web back end for administrators. RT has been under development since 1996.

Roundup
A simple issue tracking system with command line, web and email interfaces. Also includes many other modules such as todo lists and sales lead tracking.

S

Savane
Savane is a Web-based Libre Software hosting system. It includes issue tracking, project member management by roles and individual account maintenance. The issue tracking handles bugs, tasks, support, news and documentation management.

Sinergia
Sinergia is a open source framework for creating customized help desk applications written in C# .NET 3.0. It provides a base on which you can develop your own web based help desk solution.

SiT! Support Incident Tracker
SLA aware support incident tracking system, PHP/MySQL.

Slick Ticket
ASP based ticket system with support for SQL Server and Active Directory.

Subissue
Uses the Subversion version control system to store issues within your software code repository. Uses the subversion client, but a web based interface is in progress.

SugarCRM Open Source
The open source version of it’s commercial counterpart. Mostly a CRM system, but it can also handle light help desk duties.

T

Trac
Minimalistic web based project management and bug tracking tool. Trac also includes wiki functionality. Written in Python.

Trouble Ticket Express
Web based CGI help desk system. Both MySQL and Microsoft SQL Server supported.

Z

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