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just gimme the IP address already
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| #!/bin/bash | |
| # | |
| # /usr/local/sbin/ipaddress | |
| usage() { | |
| cat <<EOF | |
| Usage: $(basename $0) [interface] | |
| Report the IP 4 address for the default interface (or the one given in the params) | |
| (default interface is computed from the default route) | |
| EOF | |
| } | |
| main() { | |
| show_usage_and_exit_if_requested $@ | |
| local default=$(default_network_interface) | |
| local interface=${1:-$default} | |
| inet_addr_for_interface $interface | |
| } | |
| show_usage_and_exit_if_requested() { | |
| if <<<"$@" egrep -q '(--help|-h)'; then | |
| usage | |
| exit 1 | |
| fi | |
| } | |
| default_network_interface() { | |
| ip route | awk '/default/ {print $NF}' | |
| } | |
| inet_addr_for_interface() { | |
| ifconfig $1 | awk -F'[ :]+' '/inet addr:/ {print $4}' | |
| } | |
| main $@ |
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