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.