1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
|
#!/bin/bash
# Authors: Steven Shiau <steven _at_ clonezilla org>, Ceasar Sun <ceasar _at_ nchc org tw>
# License: GPL
# Description: Get the netmask of network card interface
# Load DRBL setting and functions
DRBL_SCRIPT_PATH="${DRBL_SCRIPT_PATH:-/usr/share/drbl}"
. $DRBL_SCRIPT_PATH/sbin/drbl-conf-functions
ethx=$1
export LC_ALL=C
Usage() {
echo "Get the netmask of network card interface"
echo "Usage:"
echo "$(basename $0) INTERFACE"
echo "Ex: $(basename $0) eth0"
}
[ -z "$ethx" ] && Usage && exit 1
if ! ifconfig -a 2>/dev/null | grep -i -q "\<$ethx\>"; then
exit 1
fi
LC_ALL=C ifconfig $ethx | grep -oE "(Mask:.*|netmask .+)" | sed -e 's/^Mask://g' -e 's/netmask //g' | awk '{print $1}'
exit 0
|
