Newbie Install Question Netcat

Jagtek · 03-22-2006, 03:11 PM

Hi I just got into Linux for my first time and I was trying to download a version of netcat. I downloaded it and now im stuck on trying to figure out how to install it for use. Im
a long time windows user trying to convert so please any help you could offer would be great!

the file is nc110.tgz

DeusExLinux · 03-22-2006, 03:30 PM

you need to install itfrom source. Extract the tarball, then run ./configure, make and make install.

What distro are you using? IS it in the repo?

Jagtek · 03-22-2006, 03:34 PM

I just installed Ferdora Core to learn a little, which im finding to be a slow process.... Lol ok im really stumped now. maybe i should go find a book....

Jagtek · 03-22-2006, 03:41 PM

I tried doing the following in the console but im not sure if im really on the right track or not?!?!

tar -zxvf nc110.tgz

it returned the following

tar: nc110.tgz: Cannot open: No such file or directory
tar: Error is not recoverable: exiting now
tar: Child returned status 2
tar: Error exit delayed from previous errors

any ideas... i know im just doing something wrong, but i have no clue what it is....

Jagtek · 04-03-2006, 01:43 PM

Ok I got the tarball extracted and it is currently sitting on my desktop. I'm not really sure where to go from here... There is no configure file, only a file named : Makefile I have another version installed but I want this one to use because of some of the options that are avalibe with it. What would be the next step to installing it?

DeusExLinux · 04-03-2006, 02:49 PM

First of all, I would recommend extracting the file to somewhere other than your desktop.. like /home/$user/netcat

After you extract it, open a terminal, cd to the dir where the files are and run:
./configure

then, after that's done, you should run:
make

then, as root run:
make install

and you're done.

Jagtek · 04-03-2006, 04:49 PM

Ok I moved the files to

/home/john/Ncat

but when i do the ./configure it says there is no such file or directory. There is in fact no configure file with the download!!??

If i try to (make) I have to enter a systemtype

I entered it as linux and got errors and then tried using generic as the system type and got the same errors.

they are as follows:

netcat.c

.text+0x15ca): undefined reference to `res_init'
collect2: ld returned 1 exit status
make[1]: *** [nc] Error 1
make[1]: Leaving directory `/home/john/Ncat'
make: *** [linux] Error 2

there was more returned this is just the last little portion! Thanks!!!!!

Nylex · 04-04-2006, 12:25 AM

There's a file called README in that archive, yes? Here's some of what it says:

Quote:

Compiling is fairly straightforward. Examine the Makefile for a SYSTYPE that matches yours, and do "make ". The executable "nc" should appear.
If there is no relevant SYSTYPE section, try "generic". If you create new
sections for generic.h and Makefile to support another platform, please follow
the given format and mail back the diffs.

There are a couple of other settable #defines in netcat.c, which you can
include as DFLAGS="-DTHIS -DTHAT" to your "make" invocation without having to
edit the Makefile. See the following discussions for what they are and do.

If you want to link against the resolver library on SunOS [recommended] and
you have BIND 4.9.x, you may need to change XLIBS=-lresolv in the Makefile to
XLIBS="-lresolv -l44bsd".

Linux sys/time.h does not really support presetting of FD_SETSIZE; a harmless
warning is issued.

Some systems may warn about pointer types for signal(). No problem, though.

Some more info about "SYSTYPES" is in the makefile:

Quote:

# makefile for netcat, based off same ol' "generic makefile".
# Usually do "make systype" -- if your systype isn't defined, try "generic"
# or something else that most closely matches, see where it goes wrong, fix
# it, and MAIL THE DIFFS back to Hobbit.

DeusExLinux · 04-04-2006, 06:38 PM

just run: make generic, in a term, and it should create the executible.