Just to update, i found a easier solution to this problem.
Intead of using system() to run command-line programs, you can add a default gateway route by ioctl with SIOCADDRT and SIOCDELRT, it's very simple.
Hope this helps someone.
Hi,
I want to end a host (shell script based) concurrent program in WARNING. Is it possible? Tried out a few things but it just either ends in NORMAL or ERROR. :confused:
Any ideas/inputs would be appreciated.
Thanks,
coolblue_3 (2 Replies)
hi, linux gurus...
i'm trying to write a script in ksh called ResetPass that allows a user to change mysql passwords. the script accepts user, password and host like this: ResetPass <user> <password> <host>. here's the code:
*****************************************************
mysql... (1 Reply)
I have my Mac OS X program executing a shell script (a script that copies files to a drive). I want to make it so that the shell script automatically kills itself if it finds that the host .app is not running OR kill itself if the drive that it is copying files to has been unmounted. Right now what... (2 Replies)
I need to know what is the maximum stack size i.e. -Xss my java program is running with.
Is there a way to find that out from inside my java program code and outside of it.
What i am looking for is to read whatever the current set max limit -Xss (stack sie) is for a particular JVM(not... (3 Replies)
Can anyone suggest a workaround
zone_5.org='/qaz/qwe/path/tns.osn'
output
/home/bingo/XXX_script.sh: line 180: zone_5.org=/qaz/qwe/path/tns.osn: no parent
The path does not exist on the local machine, the allocation used to work till the server was upgraded.
Red Hat Enterprise Linux... (2 Replies)
I have an Oracle Linux 7.1 vsphere host built. It's be preconfigured with our security configurations.
What I would like to do is unconfigure this host. Then set the host to do firstboot --reconfigure.
how do I do that using /etc/sysconfig/firstboot?
I've tried setting
... (10 Replies)
Hi All,
I have a requirement to make a oracle concurrent program end with
warning based on a given condition. If the condition is true, the
concurrent program should end with completed warning status.
The host program I am using is a shell script that checks if a file exists.
... (2 Replies)
Hi all,
i have a rhel 6.2 with a default gateway.
This server is an Intranet office with no internet access.
DNS are already configured and it's possible to resolve my target.
My goal is to link my application (apache forward) only to http://mytarget.yyy through a new gateway (That does... (0 Replies)
Dear friends
I use RedHat 6.5, which sets the gateway in the configuration file / etc / sysconfig / network as GATEWAY = 192.168.1.26, and the gateway in the configuration file / etc / sysconfig / network-scripts / ifcfg-eth11 as GATEWAY = 192.168.1.256. The two gateways are different.... (6 Replies)
Discussion started by: tanpeng
6 Replies
LEARN ABOUT NETBSD
ipsend
IPSEND(1) General Commands Manual IPSEND(1)NAME
ipsend - sends IP packets
SYNOPSIS
ipsend [ -dITUv ] [ -i <interface> ] [ -f <offset> ] [ -g <gateway> ] [ -m <MTU> ] [ -o <option> ] [ -P <protocol> ] [ -s <source> ] [ -t
<dest. port> ] [ -w <window> ] <destination> [TCP-flags]
DESCRIPTION
ipsend can be compiled in two ways. The first is used to send one-off packets to a destination host, using command line options to specify
various attributes present in the headers. The destination must be given as the last command line option, except for when TCP flags are
specified as a combination of A, S, F, U, P and R, last.
The other way it may be compiled, with DOSOCKET defined, is to allow an attempt at making a TCP connection using a with ipsend resending
the SYN packet as per the command line options.
OPTIONS -d enable debugging mode.
-f <offset>
The -f allows the IP offset field in the IP header to be set to an arbitrary value, which can be specified in decimal or hexadeci-
mal.
-g <gateway>
Specify the hostname of the gateway through which to route packets. This is required whenever the destination host isn't directly
attached to the same network as the host from which you're sending.
-i <interface>
Set the interface name to be the name supplied.
-m <MTU>
Specify the MTU to be used when sending out packets. This option allows you to set a fake MTU, allowing the simulation of network
interfaces with small MTU's without setting them so.
-o <option>
Specify options to be included at the end of the IP header. An EOL option is automatically appended and need not be given. If an
option would also have data associated with it (source as an IP# for a lsrr option), then this will not be initialised.
-s <source>
Set the source address in the packet to that provided - maybe either a hostname or IP#.
-t <dest.port>
Set the destination port for TCP/UDP packets.
-w <window>
Set the window size for TCP packets.
-I Set the protocol to ICMP.
-P <protocol>
Set the protocol to the value given. If the parameter is a name, the name is looked up in the /etc/protocols file.
-T Set the protocol to TCP.
-U Set the protocol to UDP.
-v enable verbose mode.
SEE ALSO ipresend(1), iptest(1), bpf(4), protocols(5), ipsend(5)DIAGNOSTICS
Needs to be run as root.
BUGS
If you find any, please send email to me at darrenr@pobox.com
IPSEND(1)