Project Tenzing

TBA

Netbeans, java and unpack200

Modern versions of Java (JDK 14 and newer) have completely removed the unpack200 tool, which older NetBeans plugins (like the legacy C/C++ CND kit from NetBeans 8.2) rely on for extraction.

So we need the unpack200 binary from an older Java version, specifically JDK 8 or JDK 11 and this can be obtained from:  

https://adoptium.net/en-GB/temurin/releases?os=mac&version=8

Choose the JDK and TAR.GZ

Extract and place somewhere, for example /opt/ and then when installing the C/C++ plugins from the NetBeans 8.2 Plugin Portal, which will fail, you can then point the unpack200 file to:

/opt/jdk8u504-b01/Contents/Home/bin/unpack200 

Oracle database 19c on Oracle Linux 8.10

See also:

Oracle database 11g on Windows 2012

Oracle database 11g on Oracle linux 6.10/7.9

Mount Windows share in Linux

 Brief note on mounting a windows share in Slackware.

Oracle Database 11g on Windows 2012

 TBA

Build a working Debian system with MySQL 5.1

TBC

Setting up a windows domain

This example uses Windows Server 2025

Slackware server as a gateway

 TBC

DHCP server on Slackware using dnsmasq

 Example configuration file:

Oracle database 11g on Oracle Linux 6.10/7.9

The below was carried out on VirtualBox

Sheet Metal Gauge

Sheet Metal Gauge

RedHat Subscription

If a system is already registered and causing problems;

Cable or wire size quick reference.

 

[start_up]

 A cross platform application to perform controlled application startup's

Target windows XP from Mac using Netbeans and Docker

I had tried building C/C++ applications for Windows XP using my Mac and mingw-w64 installed using Home-brew but it just didnt work out. This mostly resulted in the following when trying to run the executable on Windows XP;

What I finally discovered and use is, setting up a Docker image with the appropriate XP-compatible toolchain, ie. a MinGW that targets MSVCRT, not UCRT.

Common Network Masks

255.255.255.255 /32 (/31)

255.255.255.0 /24

255.255.254.0 /23

255.255.252.0 /22 

255.255.240.0 /20

C/C++ linking example using modified cdb file.

wget

To get wget to prompt for a password do;

wget --user=someuser --ask-password somedomain/somedir/

Windows Activation

For information only.

Download the product UMSKT https://github.com/UMSKT/UMSKT

and use the format umskt -i <Installation ID>

Working with USB in Virtualbox under a Linux host

To allow the use of USB, we must add the user to the vboxusers group, this can be done with:

sudo /usr/sbin/usermod -aG vboxusers $USER

substitute $USER for a user other than the current user if needed.

Also worth doing is adding a directory for VM's such as /DATA/VM

We should then change the group to vboxusers by:

sudo chgrp -R vboxusers VM

and also set the group inheritance by

sudo chmod g+s VM

this ensures that any new files also have the vboxusers group.

Visual Basic 6 and LF, forcing to git to use CRLF

When working with VB6 and uploading to GitHub, modify the .gitattributes file to look like the below:

# Default behaviour
* text=auto
# VB6 source files must stay CRLF
*.bas text eol=crlf
*.cls text eol=crlf
*.frm text eol=crlf
*.vbp text eol=crlf
*.vbg text eol=crlf
*.ctl text eol=crlf
*.dsr text eol=crlf
*.txt text eol=crlf
# VB6 binary companion files
*.frx binary
*.res binary
*.exe binary
*.ocx binary
*.dll binary

If doing retrospectively, then we should do the following:

git add --renormalize .

git commit -m "Fix line endings for VB6"

git add --renormalize .

git commit -m "Renormalize line endings"

git reset --hard

The following is a check to see if the files are LF or LFCR;

git ls-files --eol

Slackware minimum PXE boot example

For this example, we will be using dnsmasq on Slackware 14.2 with the Slackware 15 mirror.

crontab -e not opening correct editor

Open your .bashrc file and add the line export EDITOR=vim or do;

echo 'export EDITOR=vim' >> ~/.bashrc

Then logout and back in or source .bashrc

If this doesn't work, try adding it to .bash_profile or do;

echo 'export EDITOR=vim' >> ~/.bash_profile

and then again, logout and back in or do source .bash_profile

NOTE: We can test using echo $EDITOR

I think on is fine for when at the console and the other for remote sessions, maybe...

tcpdump

 TCPDUMP EXAMPLES

MariaDB Logging and old password support

For old password compatibility, do

SET GLOBAL old_passwords = 1;
SET PASSWORD FOR 'repl'@'%' = PASSWORD('the_password');
SET GLOBAL old_passwords = 0;

We can also try SET GLOBAL secure_auth=OFF; however I found this made no difference when running MariaDB 10.5 and attempting to connect with an old (presumable 4.1) client.

MariaDB GTID position reset

On Master, do SELECT @@gtid_current_pos;
then on Slave, do SET GLOBAL gtid_slave_pos = 'GTID_FROM_SERVER_1';

if need be do;

CHANGE MASTER TO
  MASTER_HOST='server1',
  MASTER_USER='replica_user',
  MASTER_PASSWORD='password',
  MASTER_USE_GTID=slave_pos;

then;

Start Slave;

SHOW SLAVE STATUS/G;

A note on the above, do it quickly, in case the position changes.

SELECT @@gtid_slave_pos, @@gtid_current_pos; should show the same.