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man boot
# dd if=/dev/sda of=/root/mbr.bak bs=512 count=1 # fdisk -l /dev/sda
# ls -l /dev/cuad0 # ls -l /dev/ttyS0
# cat /proc/5139/cmdline устаревшие варианты использования # cat /proc/interrupts # cat /proc/cpuinfo
http://citkit.ru/articles/367/
# cat /sys/class/net/eth0/address 00:0c:29:d2:6a:d3
/tmp /var/run /var/lock
# cat /etc/fstab # blkid
# lsmod # modprobe ip_gre # modprobe -r ip_gre # iptables -L # lsmod | grep ip # cat /etc/modules
http://upstart.ubuntu.com/getting-started.html
# ls /etc/init/ # start ssh # stop ssh
# runlevel # ls /etc/init.d/ # /etc/init.d/ssh start # /etc/init.d/ssh stop # ls /etc/rc2.d/ # update-rc.d -f ssh remove # update-rc.d ssh defaults
# cat /etc/rc.local