Strong inter-personal and communication skills; capable of training users in applications and UNIX fundamentals, and writing basic documentation.
High skill with most of UNIX commands/utilities. Familiarity with most basic system administration tools and processes. For example, can boot/shutdown a machine, add and remove user accounts, use backup programs and fsck, maintain system database files (groups, hosts, aliases).
Fundamental understanding of a UNIX-based operating system; for example, understands job control, soft and hard links, distinctions between the kernel and the shell.