What are the main differences between Apache 1.x and 2.x?
What does the “route” command do?
What are the read/write/execute bits on a directory mean?
What does iostat do?
what does vmstat do?
What does netstat do?
What is the most graceful way to bring a system into single user mode?
How do you determine disk usage?
What is AWK?
What is SED?
What is the difference between binaries in /bin, and /usr/bin?
What is a dynamically linked file?
What is a statically linked file?
