NETem - Network Link Emulator for GNS3
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# Add serial console support
set -x
# Boot configuration
# Serial interface is secondary console, the vga console remains main console
# To change that, exchange the two 'console=' boot parameter
sudo sed -i -e '1 i serial 0 38400' -e '/label .*core/,/append / s/\(append .*\)/\1 console=ttyS0,38400 console=tty0/' /mnt/sda1/boot/extlinux/extlinux.conf
# /etc/inittab
sudo sed -i -e '/tty6/ a ttyS0::respawn:/sbin/getty 38400 ttyS0 xterm' /etc/inittab
# /etc/securetty
sudo sed -i -e 's/^# *ttyS0/ttyS0/' /etc/securetty
# reload inittab on startup
sudo sed -i -e '/^\/opt\/bootlocal/ i' -e '/^\/opt\/bootlocal/ i # reload inittab' -e '/^\/opt\/bootlocal/ i kill -HUP 1' -e '/^\/opt\/bootlocal/ i' /opt/bootsync.sh
# add modified files to backup list
echo 'etc/inittab' >> /opt/.filetool.lst
echo 'etc/securetty' >> /opt/.filetool.lst