Kernel and system info in Linux

Question:

• Write the Linux Kernel release into /opt/course/kernel
• Write the current value of Kernel parameter ip_forward into /opt/course/ip_forward
• Write the system timezone into /opt/course/timezone

Answer:

# display kernel version
uname -r > /opt/course/kernel

# output value of kernel parameter
cat /proc/sys/net/ipv4/ip_forward > /opt/course/ip_forward

# get current timezone
date +%Z > /opt/course/timezone
# also possible to get timezone in this way
cat /etc/timezone > /opt/course/timezone