UNIX System Administration

Verizon Communications, MD

IBM RS/6000s, SUN Workstations, AIX, Solaris

The systems are located in one of the main data centers of Verizon and handle several mission critical applications and data.

• Planned for pre-installation of systems

• Configured and managed storage, I/O devices

• Installed, upgraded and configured operating system and related software

• Upgraded third party software

• Planned & created disk partitions, system configuration

• Setup, allocated, validated and maintained user accounts

• Managed users, groups, user disk allocation

• Created user accounts, groups, aliases, maintained passwords, shells, set profile files etc

• Created partitions as and when required

• Managed NFS

• Installed and configured machines as NFS Servers and Clients· Exported, imported and mounted file systems

• Performed troubleshooting of NFS related problems, automount, DFS and AFS

• Managed NIS

• Configured machines as master, slave and clients, managed maps

• Performed troubleshooting

• Managed printers and print queues

• Monitored and tuned system performance

• Handled security issues

• Generated reports on user activity

• Scheduled & implemented backup including operating systems, software and data

• Tuned kernel parameters according to hardware specifications.· Wrote shell scripts for automating tasks

• Designed and installed successfully 20-node computer network in the office using star network topology

• Installed UNIX to DOS and DOS to UNIX file transfer system using TCP/IP protocol.