Reset mySQL (mariadb) master/slave with GTID replication

To reset and start fresh, do;

Issue with slackpkg and gpg key

I found an issue while using slackpkg where the following error presented itself:

ERROR: Verification of the  gpg signature on CHECKSUMS.md5
               failed! This could mean that the file is out of date
               or has been tampered with. If you use mirrors.slackware.com
               as your mirror, this could also mean that the mirror to
               which you got redirected is not yet updated with the most
               recent changes in the Slackware tree.

An alternative way to use wget

Normally wget works as expected but every now and then, you page is forbidden or similar, so the below is an alternative approach;

Import certificate into Java keystore

The below example involves importing a Zscaler root CA certificate into the java keystore on my Slackware installation.

sudo keytool -import -trustcacerts -alias zscaler -file /etc/ssl/certs/Zscaler-Dalzell.crt -keystore /opt/jdk1.8.0_341/jre/lib/security/cacerts
 

Linux boot and shutdown times

 

To find the last boot time, can of course do w which will show us how long the system has been up, but to save the mental arithmetic, we can do:

who -b or uptime -s

To find the last shutdown time, we can do:

last -x | grep shutdown or last -x | grep reboot (output varies between distributions)

Information from SHOW SLAVE STATUS on mysql

SHOW SLAVE STATUS\G;

UEFI, EFI, elilo and Slackware

 I recently came across a system that would not allow me to use legacy boot, so...

Convert gamma system server to virtual box vm

 This is a work in progress...

Kill a process on OpenVMS

show system

stop/id=nnnn (where nnnn is the PID from the above command)

Restarting processes on Alpha