I need to run the command
route add -p 123.45.67.8 mask 255.255.255.0 208.00.000.000
on a linux server. what is the unix equivalent?
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To add a route for a network – in this example, 192.168.20.0 mask 255.255.255.0
sudo route add -net 192.168.20.0/24 gw 10.0.0.1
or
sudo route add -net 192.168.20.0 netmask 255.255.255.0 gw 10.0.0.1
To add a route for a host
sudo route add -host 192.168.20.20 gw 10.0.0.1
If you run route add
with no options it will give you the list of options that you can use. e.g., metrics, interface, and some others.
Also the man page will help.
ip route
is the more modern tool, so I'd be inclined to recommend that over route
. I suspect we'll gradually see less of the latter over time.
Jun 9, 2015 at 18:06
Without an explanation of what that Windows command does, it's hard to answer, but it looks like you should read the manual page for ip-route
.
One way to make the route be persistent is to add it every time the machine is started. This has same result as -p
flag on Windows.
This can be done using Cron
:
@reboot /sbin/route add -net 123.45.67.8 netmask 255.255.255.0 gw 208.0.0.0
dev eth0
can be used at the end of command if there is need to specify port to be used.
This works at least on Ubuntu 14.04 and probably on most modern implimentations of Cron.
crontab
entry is to specify it in /etc/network/interfaces
(for Debian, I'm not sure which other distributions have it in the same place). I'll write a short answer for that.
Jun 10, 2015 at 8:22
To add the route every time the interface is brought up, and remove it every time it goes down, a suitable command can be added to the interface's stanza in /etc/network/interfaces
(for Debian). Here's one of mine (this makes local broadcasts go to the local network rather than to the ISP on my NAT gateway):
iface eth1 inet static
address 192.168.0.2
netmask 255.255.255.0
pre-up iptables-restore </etc/iptables.rules
up route add 255.255.255.255 eth1
down route del 255.255.255.255
This can be easily adapted to your OS and needs.
route --help
orman route
would have displayed help to answer this.