Subversion Repositories configs

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#!/bin/bash
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# run dhclient.d scripts in an emulated environment
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PATH=/bin:/usr/bin:/sbin
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ETCDIR=/etc/dhcp
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SAVEDIR=/var/lib/dhclient
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interface=$1
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for optname in "${!DHCP4_@}"; do
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    newoptname=${optname,,};
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    newoptname=new_${newoptname#dhcp4_};
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    export "${newoptname}"="${!optname}";
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done
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[ -f /etc/sysconfig/network ] && . /etc/sysconfig/network
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[ -f /etc/sysconfig/network-scripts/ifcfg-"${interface}" ] && \
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    . /etc/sysconfig/network-scripts/ifcfg-"${interface}"
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if [ -d $ETCDIR/dhclient.d ]; then
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    for f in $ETCDIR/dhclient.d/*.sh; do
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        if [ -x "${f}" ]; then
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            subsystem="${f%.sh}"
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            subsystem="${subsystem##*/}"
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            . "${f}"
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            if [ "$2" = "up" ]; then
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                "${subsystem}_config"
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            elif [ "$2" = "dhcp4-change" ]; then
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                if [ "$subsystem" = "chrony" -o "$subsystem" = "ntp" ]; then
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                    "${subsystem}_config"
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                fi
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            elif [ "$2" = "down" ]; then
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                "${subsystem}_restore"
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            fi
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        fi
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    done
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fi