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Like the first poster said, it's simple shell redirection. &nbsp;Basically, craft the packet, and pipe it through netcat. &nbsp;You can use perl, shell, or virtually any other programming/scripting language to craft the packet, but that's on you.
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<div class="content wysiwyg-content">
Hi,<br />
<br />
I am trying to use netcat in linux as a tcp client to send some messages to a server. <br />
The message is in this format<br />
<br />
STARTDATAEND<br />
The start of the message is a 9 signed byte and followed by 256 bytes of data and ends with a 7 signed byte &nbsp;<br />
<br />
-10%START%-10HERE_IS_SOME_<wbr />DATA......<wbr />..........<wbr />...-20%END<wbr />%-20<br />
<br />
How do i send such a message containing signed byte -10 using netcat?<br />
<br />
thanks
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Hi,

I am trying to use netcat in linux as a tcp client to send some messages to a server. 
The message is in this format

STARTDATAEND
The start of the message is a 9 signed byte and followed by 256 bytes of data and ends with a 7 signed byte  

-10%START%-10HERE_IS_SOME_DATA...................-20%END%-20

How do i send such a message containing signed byte -10 using netcat?

thanks

Netcat Linux

Linux is a UNIX-like open source operating system with hundreds of distinct distributions, including: Fedora, openSUSE, Ubuntu, Debian, Slackware, Gentoo, CentOS, and Arch Linux. Linux is generally associated with web and database servers, but has become popular in many niche industries and applications.

Linux

C is a general-purpose, imperative computer programming language, supporting structured programming, lexical variable scope and recursion, while a static type system prevents many unintended operations. By design, C provides constructs that map efficiently to typical machine instructions, so it has found lasting use in applications that had formerly been coded in assembly language, including operating systems as well as various application software for computers ranging from supercomputers to embedded systems. It is distinct from C++ (which has its roots in C) and C#, and many later languages have borrowed directly or indirectly from C.

The variety of Linux distributions creates myriad issues relating to configuration and operations when computers are networked, not the least of which is the use of various network management applications, some of which are included with specific distributions, while others are standalone applications.