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Netcat on Sailfish

asked 2015-09-01 10:47:22 +0300

vadd98 gravatar image

updated 2015-09-01 15:47:29 +0300

M.Bln. gravatar image

hi there, I found that nc is available in recovery mode but it isn't available in normal mode. Is there a way to use nc in normal mode??

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Bumping this as I'm also looking for netcat. I'm sure I saw it somewhere on openrepo's but I can't seem to find it anymore.

Niju ( 2015-09-26 18:24:16 +0300 )edit

I want to send an UDP message to my server, so netcat would be the easiest way. nc is absolutely basic functionality and is a must have!

Edit: Solved it with python script! This works out of the box ;)

SaimenSays ( 2015-10-08 00:17:44 +0300 )edit

For out of the box with TCP and UDP, remember that bash can do it too (see answer below)

DrYak ( 2018-04-25 20:13:59 +0300 )edit

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answered 2015-10-11 12:26:20 +0300

Mced gravatar image

Netcat is a small program, so it's far easy to compile and install:

-- Go netcat.sourceforge.net and download the source file (netcat-0.7.1.tar.gz)

-- Open Terminal or log into Sailfish through SSH. No need to devel-su, just proceed using the standard 'nemo' account.

-- Uncompress:

tar zxf ./Downloads/netcat-0.7.1.tar.gz

-- Enter directory:

cd ./Downloads/netcat-0.7.1

-- If you didn't previously, you must install a bunch of packages needed for compiling:

pkcon install gcc #(say Y when asked "Proceed with changes?")
pkcon install make

-- Configure:

./configure

-- Compile:

make

-- Install:

Option A: next step should be logging as root (devel-su) and type:

make install

Option B: but if you don't have Developer Mode enabled or you don't want to install stuff as 'root', just create a 'bin' directory at home:

mkdir ~/bin

Copy the Netcat executable (I'm renaming it to 'nc'):

cp -a src/netcat ~/bin/nc

and you're done.

-- The uncompressed directory is useless now. You can erase it (check the route carefully, 'rm -rf' is a very dangerous command; or just delete it with your favorite file browser)

cd ~/Downloads
rm -rf netcat-0.7.1
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it works, thanks a lot!!

vadd98 ( 2015-10-11 13:31:16 +0300 )edit
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answered 2018-04-25 18:11:16 +0300

DrYak gravatar image

Alternative bash-based solution :

Remember that bash not only supports regular expressions but even features a working network stack.

This comes very handy in situations like this (debugging on a small embed device that might not have netcat installed on it, but has a not too out-dated version of bash on it).

If the netcat on you desktop/laptop is the one in listen mode in your pipe, than you can simply send data to it using :

echo "test" > /dev/tcp/${IP_DESKTOP}/${LISTEN_PORT}

and fetch data from it with

cat <  /dev/tcp/${IP_DESKTOP}/${LISTEN_PORT}

where IP_DESKTOP is the ip address of you laptop/desktop (e.g.: 192.168.2.13) and LISTEN_PORT is the port on which you instructed netcat to listen for connections.

It also works with UDP connection (using /dev/udp/ in bash, and nc -u -l in netcat).

This way you don't need to install any RPM from an external repository (openSUSE repositories for armv7hl seem to work for me usually)

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answered 2015-10-11 16:34:29 +0300

Nieldk gravatar image

No need to compile. You can download rpm here

http://t.co/duVmjgwEr9

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@Nieldk is today a void link, Error 404. Who has a good address instead?

prometheos de+it ( 2017-03-12 01:31:37 +0300 )edit

The link got outdated as a new version of the netcat rpm got uploaded. Simply browse this page to get the latest link: https://download.opensuse.org/repositories/home:/assmannst/openSUSE_Factory_ARM/armv7hl/.

tfischer ( 2018-04-17 22:07:27 +0300 )edit
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Asked: 2015-09-01 10:47:22 +0300

Seen: 1,176 times

Last updated: Apr 25