Simple shell scripts to create sysconfig ifcfg files and udev rules files for PCI interfaces

sysconfig-ifcfg-scripts-gen

#! /bin/sh

# Generate /etc/sysconfig/network-scripts/ifcfg-*
# Copyright (C) 2014 Matous J. Fialka, <http://mjf.cz/>
# Released under the terms of The MIT License
#
# Environment variables
# ---------------------
#
# IPADDR[<n>]=...
#  IPv4 address in case BOOTPROTO[<n>]="none" (i.e. "10.0.0.1")
#
# PREFIX[<n>]=...
#  IPv4 prefix length in bits (i.e. "24")
#
# GATEWAY[<n>]=...
#  IPv4 default route for 0.0.0.0/0 (i.e. "10.0.0.254")

ifindx=0

for ifdir in /sys/devices/pci*/*/net/*
do
	ifindx=$(expr $ifindx + 1)
	ifname=${ifdir##*/}
	ifaddr=$(< $ifdir/address)
	ifuuid=$(< /proc/sys/kernel/random/uuid)

	cat <<- EOT
	#<pre id="$ifindx" class="ifcfg">
	# cat '/etc/sysconfig/network-scripts/ifcfg-$ifname' <<- '#</pre>'
	DEVICE=$ifname
	NAME=$ifname
	ONBOOT=yes
	TYPE=Ethernet
	HWADDR=$ifaddr
	UUID=$ifuuid
	BOOTPROTO=none
	IPADDR=${IPADDR[$ifindx]}
	PREFIX${PREFIX[$ifindx]}
	GATEWAY=${GATEWAY[$ifindx]}
	#DNS1=
	#DNS2=
	#</pre>
	EOT

	unset ifuuid
	unset ifaddr
	unset ifname
done

unset ifindx

udev-net-rules-gen

#! /bin/sh

# Generate /etc/udev/rules.d/60-persistent-net-*.rules
# Copyright (C) 2014 Matous J. Fialka, <http://mjf.cz/>
# Released under the terms of The MIT License

ifindx=0

for ifdir in /sys/devices/pci*/*/net/*
do
	ifindx=$(expr $ifindx + 1)
        ifname=${ifdir##*/}
        ifaddr=$(< $ifdir/address)
        ifuuid=$(< /proc/sys/kernel/random/uuid)

	cat <<- EOT
	#<pre id="$ifindx" class="udev-net-rules">
	# cat > /etc/udev/rules.d/70-persistent-net-${ifname}.rules <<- '#</pre>'
	SUBSYSTEM=="net", ACTION=="add", DRIVERS=="?*", ATTR{address}=="$ifaddr", ATTR{dev_id}=="0x0", ATTR{type}=="1", KERNEL=="eth*", NAME="$ifname"
	#</pre>
	EOT

	unset ifuuid
	unset ifaddr
	unset ifname
done

unset ifindx