Managing and Installing Linux Packages on Servers.Monitoring the System Performance.Perform User and Security Administration.Implementing File Permissions for the Users and Groups.Configuring Access Control List (ACL).Manage System ServicesUpdate & Upgrade the ServersInstall the KVM machine and manage it.Increase or decrease the size of root.Increase or decrease the swap sizeResponsible for RPM Package and Installation.Scheduling jobs using CRONTAB & AT utility.Network File System (NFS) Administration.Managing the Web server Apache.Managing Sudo with multiple users and groups.Managing of SAMBA server to Window and LinuxLVM (Logical Volume Manager):Creating and Managing Partitions.Increasing and decreasing the Size of File SystemMigrate the SAN disk from one host to another host in LVMO/s installationHardware related issues like adding disks, NIC cards, processor replacement,memory replacement, increase memory and power supply replacement,Network related issues providing networking,setting NIC cards parameters, troubleshooting issueSome internal backupO/s patching and package administration whenever needed using rpm and yumI also support process related issues like memory utilization full and file system full.etc.I know about the networking.