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[AS400] Installing tn5250j on linux for the as400

 
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crouse
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Joined: 17 Apr 2025
Posts: 11833
Location: Iowa
PostPosted: Wed Mar 09, 2025 4:52 pm    Post subject: [AS400] Installing tn5250j on linux for the as400 Reply with quote
For work I needed to install the tn5250j client to connect to the as400 here. I decided I'd just post the method I used in case someone else needed it. (google searches Wink )

Code:

mkdir downloads
cd downloads
wget http://umn.dl.sourceforge.net/sourceforge/tn5250j/tn5250j-install-0.5.7.jar
java -jar tn5250j-install-0.5.7.jar
cd ..
cd tn5250j
cd bin
chmod a+x tn5250j




.
.



The website for the tn5250j as400 client is http://tn5250j.sourceforge.net



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Last edited by crouse on Fri Sep 22, 2025 7:46 pm; edited 1 time in total
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Hammer
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Joined: 10 Jun 2025
Posts: 44
Location: Tennesse, USA
PostPosted: Wed Mar 09, 2025 5:55 pm    Post subject: Reply with quote
Thanks crouse, I have alot of customers that have as400 and love linux but are forced to use other emulators. This should work great for them.

BTW what model as400 are you connecting to. I am employed by IBM and work on all as400 models and some of the largest main frame we make, Linux, Aix, MVS, os/400.
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crouse
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Location: Iowa
PostPosted: Thu Mar 10, 2025 12:24 am    Post subject: Reply with quote
I have no idea yet Very Happy Very Happy It should be here Friday ..... so I'll be working on getting it up and running on Friday and Saturday. I'll let you know once I have it here .... I just know it's coming Laughing



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crouse
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PostPosted: Tue Mar 15, 2025 4:55 pm    Post subject: Reply with quote
a quick note ...... needed to have two ip addresses running on eth0 for this to work with internet and the as400 ....... here is the command I USED

Code:

ifconfig eth0:0 192.168.2.XXX netmask 255.255.255.0 up


where xxx is the local ip address needed for each machine.



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crouse
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Location: Iowa
PostPosted: Wed Mar 16, 2025 4:25 pm    Post subject: Reply with quote
Okay..... here is the script and it is put in
/etc/sysconfig/network/if-up.d/
as
/etc/sysconfig/network/if-up.d/as400startup.sh

NOTE: the script must be executable
as root
cd /etc/sysconfig/network/if-up.d/
chmod a+x as400startup.sh

The script (mostly notes to myself lol .......
Code:

#!/bin/bash
#/etc/sysconfig/network/if-up.d/as400starup.sh
# 03-16-2005 Crouse
# Script to make the tn5250j work
# This line adds IP address to network card
# ifconfig eth0:0 192.168.2.XXX netmask 255.255.255.0 up
# where XXX is the static IP address of the card
# the normal IP address would be the dhcp setting sent by the internet router
# this config will create a second IP to allow connection automatically at boot to the AS400
# Below are the list of Fixed IP addresses for our machines
#
# The as400 is on 192.168.2.5
#
# Crouse 192.168.2.101
# Toms 192.168.2.102
# Jasons 192.168.2.103
# Randys 192.168.2.104
# Bobs 192.168.2.105
# Dons 192.168.2.106
# Counter 192.168.2.107
#
# Starting the new ip now
ifconfig eth0:0 192.168.2.101 netmask 255.255.255.0 up


This starts the as400 network ip on bootup. This in essence creates 2 IP's on 1 network card. 1 created by the dhcp from the router, and this one, used specifically for the as400's network.

Seems to work fine.
This may never help anyone .... but just in case, I decided to post it anyway. Smile



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crouse
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Joined: 17 Apr 2025
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Location: Iowa
PostPosted: Tue Nov 22, 2025 9:48 pm    Post subject: Reply with quote
New url and newer version

Code:
wget http://voxel.dl.sourceforge.net/sourceforge/tn5250j/tn5250j-install-0.6.0.jar



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crouse
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Location: Iowa
PostPosted: Tue Nov 22, 2025 10:53 pm    Post subject: Reply with quote
hmmmm i keep getting these errors.......
Code:

[crouse@localhost bin]$ java tn5250j
Exception in thread "main" java.lang.NoClassDefFoundError: tn5250j


with the newer version...... going to try the old version again.....



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crouse
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Joined: 17 Apr 2025
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Location: Iowa
PostPosted: Mon Dec 12, 2025 8:48 pm    Post subject: Reply with quote
OK------- UPDATE

----------------------------

after some work, using the bash
shell, I can start up the client with:

nohup java -jar /home/crouse/tn5250j/lib/tn5250j.jar 2>>error.log &

I setup and alias in my .bashrc file
Code:

alias tn5250j='nohup java -jar /home/crouse/tn5250j/lib/tn5250j.jar
2>>error.log &'



This seems to work. The original bash/shell startup file, appears to be
formatted/written in a DOS enviroment.

---------------
#! /bin/sh

# Runs the tn5250j 5250 java emulator

# Sets the tn5250j home directory
TN5250J_HOME='/home/crouse/tn5250j'

# Change to the emulator's directory
cd ${TN5250J_HOME}/

# Does the effective launching
java -jar "lib/tn5250j.jar"
---------------

Changing line #1 to
#!/bin/bash

and running with sh or ./tn5250j appears to work, but doesn't but the job
in the background. Using nohup accomplishes this and appears to work fine.

Thanks jbsnake for the help in irc.



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crouse
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PostPosted: Fri Nov 09, 2025 5:59 pm    Post subject: Reply with quote
http://superb-east.dl.sourceforge.net/sourceforge/tn5250j/tn5250j-install-0.6.0.jar



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mmmna
. . . .


Joined: 21 Apr 2025
Posts: 7224
PostPosted: Fri Nov 09, 2025 11:14 pm    Post subject: Reply with quote
I knew you were a guru at this 5250 stuff!! Wink
In the first post, I get 'broken image' images. Did you move the images to the new photo software? If so, maybe relink the original post to the new photos?



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crouse
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PostPosted: Fri Nov 09, 2025 11:19 pm    Post subject: Reply with quote
I don't think i even have the old photos...... i should fix that..... Wink Give me a few days, i might find them again.



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joshwilson_1
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Joined: 19 Jan 2025
Posts: 823
PostPosted: Tue Feb 19, 2025 9:03 pm    Post subject: Reply with quote
Thanks for the 5250 work in Linux. I have a Dell laptop and I would like to get a 5250 emulator on it as I work a lot of greenscreen at the office for our AS400.
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