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#!/bin/sh
default_dev='wlan0=funston'
die() { printf 'Error: %s\n' "$*" >&2; exit 1; }
with_pwd_path()
{
local PATH="$PATH":.
"$@"
}
[ $(id -u) = 0 ] || die "you are not root."
restart=$(with_pwd_path which restart-linux-device) || die "command 'restart-linux-device' is not available."
dev=${1:-$default_dev}
rawdev=${dev%=*}
[ "$VERBOSE" ] && set -x
$restart $rawdev
ifdown --force $rawdev # It's not clear to me why this is necessary, but it is.
ifup $dev
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