Oracle solaris operating system

Oracle RAC DBA (10g/11g) Training The course focuses on RAC architecture, installation, patching, administration, backup and recovery and tuning. The course will also include specialized Oracle RAC tuning script for monitoring all of the critical RAC performance areas. Oracle RAC DBA (10g/11g) Training- SADGURU TECHNOLOGIES is one of the leading IT training Institutions which is located in Hyderabad with the objective of providing a Training services for various requirements in IT industry. SADGURU TECHNOLOGIES is started by a group of highly talented faculty in their respective courses. Acute Soft is a passion for our team members.We are the one among the Computer Institutes in Hyderabad,India,USA,UK where faculty has enthusiasm, professionalism and high level of technical knowledge Course Aims The objective of this Oracle 11g Release 2 RAC & Grid Infrastructure Administration course is to provide the skills needed to plan, implement, manage and troubleshoot Oracle RAC database configurations in an Oracle Grid Infrastructure environment. The course provides an introduction to the general features and capabilities of Oracle Real Application Clusters (RAC) within the Oracle Grid Infrastructure environment. Delegates will learn how to install, create, configure and administer a database for use with RAC within the Oracle Grid Infrastructure environment. Delegates will learn how to setup and use Automatic Storage Management (ASM) and Oracle Clusterware in a RAC environment. Who Should Attend This course is designed for experienced database administrators who are required to plan, implement and administer Oracle Real Application Clusters configurations for Oracle databases. NOTE: Delegates wishing to attend this course should have a working knowledge of Oracle Database Administration. This course is run in a Linux environment and a working knowledge of the UNIX operating system is therefore highly recommended. Pre-requisite courses are: Oracle Database 11g Release 2 DBA - Part I Oracle Database 11g Release 2 DBA - Part II MORE Details: + OR

Oracle RAC DBA (10g/11g) Training The course focuses on RAC architecture, installation, patching, administration, backup and recovery and tuning. The course will also include specialized Oracle RAC tuning script for monitoring all of the critical RAC performance areas. Oracle RAC DBA (10g/11g) Training- SADGURU TECHNOLOGIES is one of the leading IT training Institutions which is located in Hyderabad with the objective of providing a Training services for various requirements in IT industry. SADGURU TECHNOLOGIES is started by a group of highly talented faculty in their respective courses. Acute Soft is a passion for our team members.We are the one among the Computer Institutes in Hyderabad,India,USA,UK where faculty has enthusiasm, professionalism and high level of technical knowledge Course Aims The objective of this Oracle 11g Release 2 RAC & Grid Infrastructure Administration course is to provide the skills needed to plan, implement, manage and troubleshoot Oracle RAC database configurations in an Oracle Grid Infrastructure environment. The course provides an introduction to the general features and capabilities of Oracle Real Application Clusters (RAC) within the Oracle Grid Infrastructure environment. Delegates will learn how to install, create, configure and administer a database for use with RAC within the Oracle Grid Infrastructure environment. Delegates will learn how to setup and use Automatic Storage Management (ASM) and Oracle Clusterware in a RAC environment. Who Should Attend This course is designed for experienced database administrators who are required to plan, implement and administer Oracle Real Application Clusters configurations for Oracle databases. NOTE: Delegates wishing to attend this course should have a working knowledge of Oracle Database Administration. This course is run in a Linux environment and a working knowledge of the UNIX operating system is therefore highly recommended. Pre-requisite courses are: Oracle Database 11g Release 2 DBA - Part I

Oracle RAC DBA (10g/11g) Training The course focuses on RAC architecture, installation, patching, administration, backup and recovery and tuning. The course will also include specialized Oracle RAC tuning script for monitoring all of the critical RAC performance areas. Oracle RAC DBA (10g/11g) Training- SADGURU TECHNOLOGIES is one of the leading IT training Institutions which is located in Hyderabad with the objective of providing a Training services for various requirements in IT industry. SADGURU TECHNOLOGIES is started by a group of highly talented faculty in their respective courses. Acute Soft is a passion for our team members.We are the one among the Computer Institutes in Hyderabad,India,USA,UK where faculty has enthusiasm, professionalism and high level of technical knowledge Course Aims The objective of this Oracle 11g Release 2 RAC & Grid Infrastructure Administration course is to provide the skills needed to plan, implement, manage and troubleshoot Oracle RAC database configurations in an Oracle Grid Infrastructure environment. The course provides an introduction to the general features and capabilities of Oracle Real Application Clusters (RAC) within the Oracle Grid Infrastructure environment. Delegates will learn how to install, create, configure and administer a database for use with RAC within the Oracle Grid Infrastructure environment. Delegates will learn how to setup and use Automatic Storage Management (ASM) and Oracle Clusterware in a RAC environment. Who Should Attend This course is designed for experienced database administrators who are required to plan, implement and administer Oracle Real Application Clusters configurations for Oracle databases. NOTE: Delegates wishing to attend this course should have a working knowledge of Oracle Database Administration. This course is run in a Linux environment and a working knowledge of the UNIX operating system is therefore highly recommended. Pre-requisite courses are: Oracle Database 11g Release 2 DBA - Part I Oracle Database 11g Release 2 DBA - Part II

ORACLE RAC ONLINE TRAINING BY REALTIME EXPERTS infrastructure setup Installation of Virtual workstation Installation of Open Filer Configuration of Open Filer Physical volumes Logical volumes Network permission Luns IQN Publish Installation of OEL Operating system OEL Oracle Enterprise Linux Disk Druid configuration Manual partitions Assigning static ip to Ethernet Time zone selection Root user password configuration Packages selection Post installation configuration Login to the OS Installing Virtual tools Sharing of Folders from host OS to virtual OS Cloning of OS in virtual workstation Start and Shut of OS Pre requisite Ip addressing design to RAC environment ping testing connectivity Adding luns from OS to san box configuring iscsi Mac address generation in virtual box configure ethernet static configure default gateway Resolve host to ip restarting service Installing RPMS on OS Creating partition on san box OCR,VD and Data partition Execute part probe Conversion of block to raw Permission on raw creation of groups creation of user password setting configure Trust relationship between nodes Time synchronization Verify run cluvfy Installing cluster ware unzip the cluster ware Execute run Installer Installing all the nodes at same time selection of VD partition selection of OCR Partition Execute scripts on all nodes verify crsctl crs Installing ASM Binaries unzip the binaries configure Kernel parameter Execute run Installer Installing all the nodes at same time configure ASM home location Execute scripts on all nodes verify ASM home location Installing RDBMS Binaries unzip the binaries configure Kernel parameter Execute run Installer Installing all the nodes at same time configure RDBMS home location Execute scripts on all nodes verify RDBMS home location Environment file Configure cluster ware environment configure ASM environment configure RDBMS environment Verify environment Listener Login to RDBMS environment Execute netca tool Listener configuration on all nodes Verify Listener service ASM instance and Disk group Login to ASM environment Configure ASM instance DBCA Configure disk group Verify ASM service Verify ASM disk group RDBMS instance and Database Login to RDBMS environment Configure Database DBCA tool Assign db name Select disk group to create db Verify database and instance service RAC Services View RAC services Learn how to stop and start services Srvctl stop database service Srvctl stop instance service Srvctl stop ASM service Srvctl stop listener service Srvctl stop nodeapps service Srvctl start nodeapps service Srvctl start listener service Srvctl start ASM service Srvctl start instance service Srvctl start database service Crs stop all service crs start all service Adding a New node to RAC Add new node network access in san box Os preparation Ip addressing design to new node ping testing connectivity Adding luns from OS to san box configuring iscsi Mac address generation in virtual box configure ethernet static configure default gateway Resolve host to ip restarting service Installing RPMS on OS Execute part probe Conversion of block to raw Permission on raw creation of groups creation of user password setting configure Trust relationship between existing RAC nodes Time synchronization Installing and Add cluster ware to existing RAC Installing and Add ASM to existing RAC Installing and Add RDBMS to existing RAC Environment file configure Listener configuration Add RDBMS instance to existing database Verify new node services Removing a existing node from RAC Stop and Remove RDBMS instance stop and remove ASM instance stop and remove listener stop and remove nodeapps delete ora Inventory update global inventory uninstall RDBMS binary Uninstall ASM binary Remove crs daemon Uninstall Clusterware Verify Load Balancing Server load balancing Preference configuration dbca configuration Manual configuration Adding and Deleting Client Load balancing configure tns Edit Tns names Verify client load balance Cloning RMAN Cloning Enable archive mode in RAC Configure FRA Perform RMAN Backup configure tns configure directory structure create parameter file create password file start instance in nomount connect by RMAN Perform duplicate database verify the clone database Patches Patch set unzip patch set Apply patch set for crs verify crs version stop relevant services Apply patch set for ASM Apply patch set for RDBMS start relevant services Execute scripts Verify the version OPATCH Stop relevant services unzip opatch Apply OPatch verify optach Up gradation upgrade cluster ware upgrade ASM binary Upgrade RDBMS binary Execute upgrade scripts Verify new version oracle rac online training CONTACT US: India: + Usa: +

Overview: The Network Administration for the Oracle Solaris 10 Operating System course provides students with the knowledge and skills necessary to perform network administration tasks, such as configuration and troubleshooting of a local area network (LAN). This course also provides hands-on experience with topics, such as Internet Protocol (IP) routing, Domain Name System (DNS), Dynamic Host Configuration Protocol (DHCP), IP version 6 (IPv6) and the Solaris IP Filter firewall. ABOUT ECORPTRAININGS: Ecorp Trainings are one of the best institute providing quality level of training in E-learning process.This is instructor led online training. We also provide corporate training , if group of people interested in same technology. Contact us for detailed course content & register for a free demo. We also provide support in client interviews , resume preparation , ticket resolving. Contact us for custom designed training course by experts exclusively for yourself. We provide training for almost all IT technologies i.e ; JAVA , DOTNET , SAP ,ORACLE , PEOPLESOFT ,HYPERION etc, contact us if you have any particular need. ECORP TRAININGS. Gtalk ID : ecorptrainings Skype ID : ecorptrainings

I often get mails from people asking what are the questions generally asked in Weblogic by interviewers. Generally for an Administrator’s positions, in addition to Weblogic questions, there are a lot of Unix questions and a few questions related to process and case handling. These are the important questions that I cover while interviewing. 1. How do you differentiate between a server hang and server crash issue? When a Server crahes, the JAVA process no longer exists. When the Server is hung, it stops responding. We can use the weblogic.ADMIN utilty to ping the server. In case of a hang situation we can take multiple thread dumps and analyze the cause of hang. 2. What can be the various reasons for a server crash? a) Native IO b) SSL Native Libraries c) JVM d) Supported Configuration e) JDBC Driver issue 3. How do you troubleshoot a crash? JVM crash generates a hs_err_pid file. We need to look into the stack trace of the hs_err_pid file . If the thread is from a native io, we need to disable native io. if the stack trace is from the driver, we need to get in touch with the drive team. Quite possibly its a problem with driver. Changing the type of driver can be a workaround. If the thread shows it coming from an optimzed code, we can turn of optimization. If the stack is from native calls of application, its a bug with the application and it has to b modified. 4. Ho do you troubleshoot Server Hang? We can use java weblogic.Admin PING to check if we get a normal response. We need to take multiple thread dumps with kill -3 pid on unix and CTLR Break on Windows. Analyze the thread dump to find the root cause. 5. What can be the reasons of Server hang? Memory leak, databse query taking a long time to return, Deadlock. 6. What is memory leak? Memory leak is when objects are not romved from the heap even when they are not required. 7. What are the various causes for OUT OF MEMORY? a) Insufficient heap size, not able to match the extra load. b) Objects licing too long, like HTTP Sessions. c) Memory leak in application code. d) Full GC not happening due to JVM Bug. 8. How to troubleshoot and overcome such issues? Gather memory data by enabling GC verbose. If its due to Http Session, timing out http session after certain interval might help. Look into the code for jdbc connection handling. Optimizing the heap size according to the load. 9. When does High CPU Usage occur? It occurs when one process or one thread utilizes unexpectedly high proportion of CPU. 10. How to troubleshoot it? In Solaris environment, we need to take pstack and prstack and see what the threads are doing. In Windows we need to use pslist and process explorer. 11. What is Clustering and what is achieved through it? Clustering is the grouping together of servers for the purpose of high availability and scalability. Load balancing and Failover is achieved. 12. How does Cluster Communication Happen? Members of the Cluster communicate over the Cluster Multicast IP and Port by sending periodic heart beat messages. 13. What is the difference between the Sun JVM and BEA JRockit JVM? The most well know JVM is the implementation from Sun. The Sun JVM is called HotSpot. The Sun JVM is shipped in the Java Developer’s Kit (JDK) and Java Runtime Environment (JRE) from Sun. The BEA JRockit JVM from BEA systems is optimized for reliability and performance for server side applications. To achieve this, BEA JRockit JVM uses technologies such as code generation, hot spot detection, code optimization, advanced garbage collection algorithms and tight operating system integration. 14. TUning JVM Parameters. If you have a single processor, single thread machine then you should use the serial collector (default for some configurations, can be enabled explicitly for with -XX:+UseSerialGC). For multiprocessor machines where your workload is basically CPU bound, use the parallel collector. This is enabled by default if you use the -server flag, or you can enable it explicitly with -XX:+UseParallelGC. If you’d rather keep the GC pauses shorter at the expense of using more total CPU time for GC, and you have more than one CPU, you can use the concurrent collector (-XX:+UseConcMarkSweepGC). Note that the concurrent collector tends to require more RAM allocated to the JVM than the serial or parallel collectors for a given workload because some memory fragmentation can occur.

Course Contents: Oracle Database 12c Introduction Oracle Database Architecture: Overview CDB & PDB Oracle Database Instance Configurations Connecting to the Oracle Database Instance Oracle Database memory Structures Process Architecture Process Structures Process Startup Sequence Oracle Software Installation Basics Installation Planning Your Installation Configuring Oracle Linux with Oracle RDBMS Pre-Install RPM Operating System Groups and Users Environment Variables Configuring the Oracle Software Owner Environment Using Oracle Universal Installer (OUI) Installation Option: Silent Mode Installing Oracle Database Software System Requirements for Oracle Database Creating Operating System Groups and Users Types of Installations DB creation Creating an Oracle Database by Using DBCA Planning the Database Storage Structure Types of Databases (based on workload) Choosing the Appropriate Character Set Understanding How Character Sets are Used Setting the NLS_LANG Initialization Parameter Using the Database Configuration Assistant (DBCA) Oracle Database Management Tools startup and shutdown Introducing Oracle Database Management Tools Using SQL*Plus Using SQL Developer Logging in to Oracle Enterprise Manager Database Express Using the Enterprise Manager Database Express Home Page Understanding the Enterprise Manager Cloud Control Framework Using Enterprise Manager Cloud Control Managing the Database Instance Initialization Parameter Files Starting an Oracle Database Instance Shutting Down an Oracle Database Instance Viewing Log Files Using Trace Files Using the Dynamic Performance Views Data Dictionary Configuring the Oracle Network Environment 12c network Oracle Net Services Overview Database User Accounts Storage Structures Understanding Storage of Data Undo Data Overview Transactions and Undo Data Storing Undo Information Comparing Undo Data and Redo Data Managing Undo Configuring Undo Retention Guaranteeing Undo Retention Changing an Undo tablespace to a Fixed Size Managing Data Concurrency Overview of Locks Locking Mechanism Data Concurrency DML Locks Enqueue Mechanism Lock Conflicts Implementing Oracle Database Auditing Separation of Responsibilities Database Security Monitoring for Compliance Standard Database Auditing Unified Audit Data Trail Separation for Duties for Audit Administration (AUDIT_ADMIN and AUDIT_VIEWER roles) Configuring the Audit Trail Specifying Audit Options Backup and Recovery Concepts Categories of Failures Configuring for Recoverability Backup Solutions Overview

RAC Training in Hyderabad Sadguru Technologies ph no: - 1. Introduction •What is a ClusterOracle Real Application Clusters (RAC) •Advantage of using RAC •Clusters High Availability, Scalability and Performance •Oracle Real Application Clusters Architecture •Cache fusion •Multi instance transaction behaviour •Extra background process in RAC 2. Installation of Oracle Clusterware (CRS) and configuration •Oracle RAC 10g Installation: Outline • Pre-Installation Tasks • Hardware Requirements • Network Requirements • The oracle User Environment Setup & User Shell Limits • Linux Operating System Parameters • Cluster Setup Tasks • Storage for Cluster •Oracle Cluster Registry File • Voting Disk File • Verifying the Oracle Clusterware Installation • Cluster verify utility (CLUVFY) 3. ASM with RAC •ASM Overview •Installation of ASM Instances •Managing ASM Disk Groups and Instances. •ASM Instance and Crash Recovery in RAC 4. RAC Software Installation & Database Creation •Oracle database software installation •Cluster database creation •Post installation tasks 5. Oracle Clusterware Administration & Debugging •Oracle Cluster registry (OCR) • Voting disk • VIP Addresses • Debugging Clusterware log files • Workload distribution •Transparent application failover Address: SADGURU TECHNOLOGIES H. No: ,Flat No: 102, Sai Manor Apartment, S.R. Nagar Main Road, Landmark: Beside Umesh Chandra Statue, Hyderabad-, Mob:91-,Ph:040-

RAC Training in Hyderabad Sadguru Technologies ph no: - mail id: 1. Introduction •What is a ClusterOracle Real Application Clusters (RAC) •Advantage of using RAC •Clusters High Availability, Scalability and Performance •Oracle Real Application Clusters Architecture •Cache fusion •Multi instance transaction behaviour •Extra background process in RAC 2. Installation of Oracle Clusterware (CRS) and configuration •Oracle RAC 10g Installation: Outline • Pre-Installation Tasks • Hardware Requirements • Network Requirements • The oracle User Environment Setup & User Shell Limits • Linux Operating System Parameters • Cluster Setup Tasks • Storage for Cluster •Oracle Cluster Registry File • Voting Disk File • Verifying the Oracle Clusterware Installation • Cluster verify utility (CLUVFY) 3. ASM with RAC •ASM Overview •Installation of ASM Instances •Managing ASM Disk Groups and Instances. •ASM Instance and Crash Recovery in RAC 4. RAC Software Installation & Database Creation •Oracle database software installation •Cluster database creation •Post installation tasks 5. Oracle Clusterware Administration & Debugging •Oracle Cluster registry (OCR) • Voting disk • VIP Addresses • Debugging Clusterware log files • Workload distribution •Transparent application failover Address: SADGURU TECHNOLOGIES H. No: ,Flat No: 102, Sai Manor Apartment, S.R. Nagar Main Road, Landmark: Beside Umesh Chandra Statue, Hyderabad-, Mob:91-,Ph:040-

I have about 8 year teaching experience and 5 year in IT industry experience in ORACLE 8i/9i/10g/11g, SQL, PLSQL, D2K, DEVELOPER-, FORM, REPORT,DEVELOPER SUIT 10g, TOAD, C, C++, CORE JAVA, MS OFFICE(MS WORD,MS EXCEL,MS POWERPOINT MS ACCESS), OPERATING SYSTEM(OS), DOS,WINDOWS etc. Mobile-nine,nine,eight,four,eight,eight,seven,two,eight

PERIDOT SYSTEM is the NO.1 SOLARIS training institute in Chennai with experienced IT professional trainers. Students of our institute are placed in top IT companies after completed their training. Placement oriented training is provided by our trainers during training itself. Call for course details. ADVANTAGES •Free resume preparation •Job oriented training •100% placement •Free demo classes for two day •Interactive classes •Limited batch size •Feasible cost •Excellent environment for learning SOLARIS •Technical support is provided upto 1year SOLARIS Sun Microsystems developed UNIX operating system which is known as SOLARIS and oracle SOLARIS is owned by ORACLE corporations. SPARC systems use the SOLARIS especially for its scalability. SPARC based system, workstations and servers are supported by SOLARIS. Certificate will provide after completion of training which is very useful for the students to get job in IT field. SOLARIS SYLLABUS •SOLARIS file system hierarchy •Managing local disk devices •Installing SOLARIS operating system •Boot PROM •Creating and managing user account •Managing SOLARIS file system •Performing mounts and unmounts •Performing system security •Managing package administration •Printer services •RAID •Backing up the mounted file and etc… MOBILE NO: Tags: Best SOLARIS training institute, best training institute, training institute in Chennai

Peridot Systems introduce Solaris training in Chennai Adyar. Why Peridot Systems? •1 year technical support •½ year free lab •Faculty MNC professional •Faculty having 7+ yr experience Solaris: •Introduction •Boot procedures •Startup and shutdown procedures •Service management facility •Installing the Solaris operating system •Software package administration •Managing processes •Maintenance of patches •Disk management •File system management •File security •User management •Backup and recovery •Managing the print environment •Solaris 10 system administration – part ii •Naming services •Nfs/cache fs •Automount •Solaris volume manager (svm) •Managing swap space •Jumpstart •Live upgrade overview •Dump file configuration •Syslog •Role-based access control (rbac) •Zones For further details contact Ph No.: (Divya) Venue: Kamatchi Krupa Apts, No: 84/8, Ground Floor, Venkatarathinam main street, Venkatarathinam Nagar, LB Road, Adyar, Chennai, Tamil Nadu - .

Oracle RAC DBA (10g/11g) Training The course focuses on RAC architecture, installation, patching, administration, backup and recovery and tuning. The course will also include specialized Oracle RAC tuning script for monitoring all of the critical RAC performance areas. Oracle RAC DBA (10g/11g) Training- SADGURU TECHNOLOGIES is one of the leading IT training Institutions which is located in Hyderabad with the objective of providing a Training services for various requirements in IT industry. SADGURU TECHNOLOGIES is started by a group of highly talented faculty in their respective courses. Acute Soft is a passion for our team members.We are the one among the Computer Institutes in Hyderabad,India,USA,UK where faculty has enthusiasm, professionalism and high level of technical knowledge Course Aims The objective of this Oracle 11g Release 2 RAC & Grid Infrastructure Administration course is to provide the skills needed to plan, implement, manage and troubleshoot Oracle RAC database configurations in an Oracle Grid Infrastructure environment. The course provides an introduction to the general features and capabilities of Oracle Real Application Clusters (RAC) within the Oracle Grid Infrastructure environment. Delegates will learn how to install, create, configure and administer a database for use with RAC within the Oracle Grid Infrastructure environment. Delegates will learn how to setup and use Automatic Storage Management (ASM) and Oracle Clusterware in a RAC environment. Who Should Attend This course is designed for experienced database administrators who are required to plan, implement and administer Oracle Real Application Clusters configurations for Oracle databases. NOTE: Delegates wishing to attend this course should have a working knowledge of Oracle Database Administration. This course is run in a Linux environment and a working knowledge of the UNIX operating system is therefore highly recommended. Pre-requisite courses are: Oracle Database 11g Release 2 DBA - Part I Oracle Database 11g Release 2 DBA - Part II MORE Details: +

UNIX Interview Questions and Answers UNIX or Linux operating system has become default Server operating system and for whichever programming job you give interview you find some UNIX command interview questions there. These UNIX command interview questions are mostly asked during Java development and Support role interviews on various investment banks mostly because most of electronic trading systems or stock trading system works on Unix servers. As we know that high volume low latency systems which wants to take advantage of little bit of volatility in market for Equity , Futures and options or Foreign exchange trading need a stable server side operating system and Redhat Linux is doing great job there. with the advent of Algorithmic trading this speed factor becomes more important so getting someone who has good knowledge of operating system and commands on which these trading system runs is definitely required. but these UNIX command interview questions are equally applicable for any job interview which requires some work on Unix Operating System. With the growing use of Linux in form of RedHat, Solaris and IBM AIX its must to keep you familiar with essential Linux commands available on various platforms. Unix and Linux Command Interview Questions and AnswersLong back I had once asked one of my friend why are you preparing Unix Command interview questions if you going for a Java Interview and he told me that this job doesn't only require knowledge of Java but also knowledge of Unix, Linux, SQL and other scripting language , which is quite true. After that I thought to collect various UNIX command interview questions asked to Java developers or trading system support interviews and this is the result of that compilation. This list of UNIX command interview questions are by means complete and would be great if you guys contribute some genuine and good Unix Command Interview questions and answers asked during interviews. I have divided the questions on three categories for sake of managing and keeping this list of Unix Interview questions up to date. Read more: http://javarevisited.blogspot.com/2011/05/unix-command-interview-questions.html#ixzz3W1UbYiXn

UNIX Interview Questions and Answers UNIX or Linux operating system has become default Server operating system and for whichever programming job you give interview you find some UNIX command interview questions there. These UNIX command interview questions are mostly asked during Java development and Support role interviews on various investment banks mostly because most of electronic trading systems or stock trading system works on Unix servers. As we know that high volume low latency systems which wants to take advantage of little bit of volatility in market for Equity, Futures and options or Foreign exchange trading need a stable server side operating system and Redhat Linux is doing great job there. with the advent of Algorithmic trading this speed factor becomes more important so getting someone who has good knowledge of operating system and commands on which these trading system runs is definitely required. but these UNIX command interview questions are equally applicable for any job interview which requires some work on Unix Operating System. With the growing use of Linux in form of RedHat, Solaris and IBM AIX its must to keep you familiar with essential Linux commands available on various platforms.