Configuration and management of File systems ext3 file system utilities (mke2fs, e2fsck, dumpe2fs, tune2fs)
LVM physical, logical, volumes, volume groups,extending file systems on LVM
mount, unmount of filesystems - /etc/fstab mount options disk quota automounter
Troubleshooting rescue mode, sulogin etc.
Configuration of Network properties and access policies.
Configuration of Ethernet, ppp interfaces
knowledge of network related service scripts - ifconfig & networking tools
Configuration of NFS, DNS and NIS.
Kernel fine tuning
Disk Management
partitioning tools like fdisk, sfdisk etc
Kernel compilation - initrd
Installation and configuration of infrastructure applications.
Veritas NetBackup administration and logging
Monitoring and fine tuning for system performance using system tools
Process monitoring commands like top, vmstat, free etc
Management of User accounts, passwords and file/folder,authconfig,shadow passwords,user/group management commands permission
Tuning System based on customer inputs.
Package administration
RPM several command options for rpm,building rpm packages
Systematic Troubleshooting of problems
RedHat Linux Startup process - init - /etc/inittab - /etc/init.d service scripts runlevels,chkconfig, ntsysv utilities
Servers: Apache, sendmail, samba, ftp, dhcp, ntp, ssh etc.
Xwindows.X server, clients, Openssl, public, private key encryption
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