General :: Sending File Via Netcat?
Jan 20, 2010
I'm using something like this to send file from one computer to another:To serve file (on computer A):
cat something.zip | nc -l -p 1234 To receive file (on computer B): netcat server.ip.here. 1234 > something.zip can I do the opposite? Let's say I have file on computer B and I want to send it to A but not the way I wrote above, but by making computer that's supposed to receive file (A) be 'listening' server and connect computer that's 'sending' file (B) to server and send the file? Is it possible? I think it might be but I'm not sure how to do this.
In case my above explanation is messed up: How do I send file TO 'server' instead of serving the file on server and then taking it FROM it (like I did above)?
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Apr 21, 2010
I have two custom scripts I just wrote to facilitate transferring files between my VPS and my home server. They are both written in bash (short & sweet): To send:
[Code]....
The problem is that, for a very quick second, I see something flash along the lines of "Connection Refused" (before pv overwrites it), and no file is ever transferred. The port is forwarded through my router, and nmap confirms it:
[Code]....
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Jul 6, 2011
program to measure speed of sending file from one computer to another
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Feb 14, 2010
I received the following output from an rsync (3.0.0) command that was executed:
sending incremental file list
sent 77214 bytes received 484 bytes 155396.00 bytes/sec
total size is 254531170 speedup is 3275.90
What does "sending incremental file list" mean?
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Aug 12, 2010
I'm trying to do a
find /photos/* -type f -mtime +365
to find all my pictures that are over a year old, but I keep getting argument list too long. How can I view what all the results are, even if it just dumps it to a file that I have to open?
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Jun 29, 2010
i have to control vlc which is running on my pc through console application.I heared like it can be controlled using netcat and rc interface but not getting the procedures how exactly its can be implemented.So if anyone knows pls explain me with steps.i want to do this in windows and i'm using vlc version 0.8.6.
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Mar 6, 2011
I've always been curious about this but say that you had computer A which runs headless and had music that you wanted to hear from computer B. Sure you can setup vlc or icecast on computer A and stream it. But what if you could forward the sound over netcat. For example, say when you play a sound file on Computer A data gets sent to /dev/snd.Would be possible to do something like the following.
Computer B
nc -lvp 6666 > /dev/snd
Computer A
cat /dev/snd | nc -v -w 5 computer_b 6666
And be able to hear sound playing on Computer A? point me in the right direction to find out about how to do this?
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Dec 21, 2010
How to attach an ordinary file as well as Excel file while sending mail to a particular user in red hat.
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Dec 9, 2010
I have a web page that has links to a php script that sends pdf files to the browser when clicked.
The links are like this:
Code:
<a href="getfile.php?id=1201234">
The files sent are shown embedded in the browser, which is what I want.
The problem is: the title of the browser window or tab in which the pdf file is opened is "getfile.php?id=1201234"), and not the actual file name of the pdf file.
Is it possible to send the file by a php script in a way that the window/tab title becomes the filename and not the link by which it has been accessed?
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Apr 23, 2009
I'm working on testing some software, and I have a question. We have several files of binary data that we need to push through our application to test. It communicates via simple TCP sockets. Is there a way I can send this data to the socket from the command line? I tried doing something like this, but telnet never picked up the data.
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Mar 27, 2010
I wanted to know is there any way to send a content of a file as snmp trap with snmpd agent of linux?
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Mar 3, 2011
I have configured my router to behave like a wireless access point. I'm using hostapd as the utility to manage the access point. I am able to connect to the access point from my android phone.Now i need to send a file to the android phone from the access point.
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Jun 15, 2010
I am new in linux. I am using opensuse 11.4. How can I ping a DNS using netcat?
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Jun 16, 2010
How can i send udp packet to the DNS using netcat in opensuse.
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Dec 9, 2010
I'm wondering if I can use netcat to listen to a UDP port and display ALL incoming packets, no matter where they're from. If I just do 'nc -u -l 1234' then netcat will listen for incoming packets and connect() to the source address of the first one it sees (I can see this with strace). Is there any (standard) way to stop the connect() call? I can make a hack to block connect() with a function of my own, but that'd be ugly
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Jul 10, 2009
I connected two machines, I have their given of the addresses ip in a static way and not with DHCP. I gave to the machine server the address: 192.168.0.1, and in the machine client the address 192.168.0.2.
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Jan 7, 2010
i'm trying to clone a hard drive using dd & netcat.
Quote:
on target:
nc -l -p 1333 |dd of=/dev/sdb
on source:
dd if=/dev/sdb |nc 192.168.0.5 1333
However after a while since the process was initiated I get a
I/O error in filesystem ("....") meta-data dev ...block 0x..... ("xfs_read_buf") error 5 buf count 512 XFS: size check 2 failed
Further digging showed that the target hard drive was less in space by 100 kb. Both are 1 T drives seagte but different models, hence the diff in space maybe.The data on the original drive is only 900 GB.
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May 25, 2010
I'm trying to redirect nc command output but I can't do it.
I have tried this:
And this:
But it seems doesn't work.
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Jul 27, 2010
I've tried to use netcat in the past and assumed it was my stupidity that was preventing it from working... but this is getting ridiculous. I'll execute nc -l 3333 on a server at 192.168.0.105 (after opening it on the firewall of course) then I run nc 192.168.0.105 3333 on my laptop (from 192.168.0.101). and nothing happens... i start typing and nothing comes up on the terminal.
I run nc -z 192.168.0.105 80 which should ideally do a port scan of port 80 on that server (of which I'm running a web server that clearly works) but it doesnt even give me any feedback. Nothing happens. Now when I use the verbose flag i see that I am indeed connecting to the specified port on the server successfully (so the port scan one is a success but only with the verbose flag... which shouldnt be the case I believe). But still once I have the server listening and the laptop connected... I type in both windows and nothing happens...
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Oct 22, 2010
OK here's what I'm doing:
On terminal 1, I enter:
$ nc6 -vlp 5000
nc6: listening on 0.0.0.0 5000 ...
On terminal 2, I enter:
$ nc6 -v localhost 5000
nc6: ygt-asfandq (127.0.0.1) 5000 [5000] open
Now, as SOON as I make the connection on terminal 2, both netcats immediately quit back to the command prompt. The return code for both is 0.
I do not have ANYTHING in my firewall (I checked with sudo iptables -v -L)
I have attached a wireshark trace of the conversation..
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May 7, 2010
Here is my problems :I have two networks :1. LAN (10.1.x.x subnet 255.255.0.0), and2. my internet public (IP 202.xx.xxx.xxxx subnet 255.255.255.240)I have an application in my LAN PC (10.1.2.240) which broadcast udp packet to its client. The client in my LAN can receive the udp packet, no problem.My question is how netcat/socat can RELAY the udp broadcast packet to one of my IP public address so the message can be received by other client from internet ?
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Apr 11, 2011
i have 3 servers in 2 dcs as follows; server 1 (dc1 - dmz) --- server 2 (dc1 - internal) --- server 3 (dc2 - internal) Now I have an application in server1 that have to connect to port 44000 in server 3 but dc refuse to open connection saying they do not open connections between dmz and dc2 (i have no say over this).
However I can connect to virtually any port from server1 <-> server2 and also server2 <-> server3. Is it possible to do something like;
server1 <-> server2 <-> server3:44000 using nc to get the app work.
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Nov 21, 2010
I made a simple proxy using netcat and it works great, the idea is to make the server and client communicate through two named pipes, file1, file2.
$ mknod file1 p
$ mknod file2 p
$ nc -l -p 12345 0<file1 1>file2 &
$ nc 192.168.2.118 80 1>file1 0<file2 &
The problem Im facing is that I cant seem to intercept the data going between the client and the server. I want to be able to have the data coming to the server in a variable, manipulate it and send it to the client, and the other way, have the data coming to the client in a variable, manipulate it and send it to the server.
Im running on an embedded device where tee, awk and many other commands are absent. how can I redirect the data to a variable, manipulate it and pass it to the other side, that is the question.
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Sep 2, 2010
I am running somes instances of Redis. I want to get Redis stats with following command:
Code:
$ echo "info" | nc <server_IP> <port>
but sometime it returns nothing. The first thing come to my mind is broken pipe or something like this. I always get the result if telnet to Redis and typing 'info' command. I also try pipe viewer to monitor the progress of data but it didn't help:
Code:
$ echo "info" | pv | nc <server_IP> <port>
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Dec 28, 2010
So I opened a terminal and fired up netcat.I only wanted to view the Foreign Ip Addresses so I used
Code:
netstat --tcp --numeric | cut -c 45-65
and that gave me[code]...
There are two things that I am trying to accomplish here. The first is that I would like to "cut" the first three horizontal lines so that the output is only ip addresses.I tried tail but the number of different IPs changes so it still gives me those top lines. I tried head but that doesn't seem to give me any output at all.The second thing I would like to do is to filter out duplicate values. For example the output above has 2 duplicate entries of 66.102.7.101:80
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Mar 5, 2010
I am trying to write an irc bot to run interactive fiction games in a channel. I am connecting to the channel using nc. I'm having a hell of a time trying to supply input stdin for nc after the connection is established. Here's what's going on. I've got lines of plain text in a file with the irc commands required to identify the bot's ID and join the channel. I can connect easily using any of the following commands
cat inputfile | nc irc.servername.org 6667 -i 1
nc irc.servername.org 6667 -i 1 < inputfile
Named_Pipe | nc irc.servername.org 6667 -i 1
cat inputfile > Named_Pipe
With the first two commands nc connects, reads the file with some time between each line allowing the irc server to respond, bringing me into the channel. It then begins to receive stdin from the command line allowing me to do things like "privmsg #channelname :Hello World!!!" sending messages to the room. This is not the desired behavior. I require nc to take additional stdin from the inputfile if I cat additional text to the end of it.
The last set of commands using the named pipe seem like it does the same, but it doesn't actually send anything to the room, which indicates to me that perhaps nc is continuing to take stdin from the named pipe (this is the desired behavior) rather than dropping to the console for stdin. If I try to cat more plain text data to the end of the named pipe, however, either with something like "echo 'privmsg #channelname :Hello World!!!' > Named_Pipe" (or >> instead of >) or with a filename in place of the "echo" command the whole command simply seems to hang until I press ctrl-C.
I don't understand what I'm doing wrong. With anonymous and named pipes, and with redirection, the problem seems to be the same. nc seems to take it's stdin from the file until it hits the end of file, at which point I can no longer introduce new lines of plain text as stdin for the running nc process.
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May 17, 2011
I have two SUSE(2.6) virtual machines running in the same subnet with two network cards each as shown below.
VM1------------------------------------------------------------------------------
appstage1:~ # ifconfig
eth0 Link encap:Ethernet HWaddr 00:0C:29:22:5A:24
inet addr:192.168.128.12 Bcast:192.168.128.255 Mask:255.255.255.0
inet6 addr: fe80::20c:29ff:fe22:5a24/64 Scope:Link
[Code]....
Ultimately my DB will run in VM2 and any DB requests coming in at 2055 of VM1 should be forwarded to port 2055 of VM2. Since I do not yet have a DB running I am trying to test with netcat.
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Mar 4, 2010
I'm trying to capture incoming/outgoing phone call data. Both telnet and nc have allowed me to easily direct this data to a file for later processing, HOWEVER I can't seem to get either to work as a background process. I want to put the connection into a shell script and run from cron.
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Jan 31, 2011
I'm trying to send an AIM via PHP. I've had no success using BlueTOC.
I'm currently trying a different method which will work nicely if I can just figure it out.
I've decided to just install nAIM on my server running CentOS. From there I intend to just use the PHP command exec() to call up nAIM and send the message. Simple enough...
My problem i'm running in to is that I don't really know enough about using the exec() command to call up nAIM and give it all the commands needed to send the message.
To run nAIM from the command prompt you have to type "naim" then the program starts. After you have it running you type "/connect <screenname>" then "<password>" then "/msg <user> <message>".
Unfortunately this can not all be done on 1 line using -options. So when using the exec() command in PHP i'm really now sure how I can accomplish all this.
The end result for this is basically: I'm trying to scrape a page and when new data is posted on the page, I want to send an AIM with that new data to someone.
The scraper part I have down no problem. It's just the whole AIM part that eludes me.
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Apr 14, 2009
I'm starting to like making bash scripts. It's kewl making creative ones. Right now I'm trying to make a bash script that will open up port 23 for a netcat connection. Once there's a connection, I'd like for the script to open up xmms and play a sound effect, as well as echo a txt file to the desktop saying that a connection was made at this specific time. When I execute the script, it stops exection at the first line. So far I have this:
sudo nc -lvnp 23
while [ 1 ]
do
[code]...
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