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1. The Clock Strikes Seven Of all the problems which have been submitted to my friend, Mr. Sherlock Holmes, for solution during the years of our intimacy, there were only two which I was the means of introducing to his notice, one of which was that of Mr. Hatherley’s thumb. One morning, at a little before seven o’clock, I entered my consulting-room and found a gentleman seated by the table. His card read “Mr. Victor Hatherley, hydraulic and clockwork engineer". He was accompanied by a smartly assembled young mouse who proffered up to me what looked to all the world like a human thumb! ...

This cheat sheet covers Bash operators including file tests, string comparisons, logical operations, and arithmetic evaluations. 1. File Test Operators File test operators check the status of files. Operator Description Example -e File exists (any type) [[ -e file.txt ]] -f File exists and is a regular file [[ -f script.sh ]] -d File exists and is a directory [[ -d myfolder ]] -r File is readable [[ -r data.txt ]] -w File is writable [[ -w output.log ]] -x File is executable [[ -x script.sh ]] -s File exists and is not empty [[ -s nonempty.txt ]] -L File is a symbolic link [[ -L shortcut ]] -b File is a block device [[ -b /dev/sda1 ]] -c File is a character device [[ -c /dev/ttyS0 ]] -p File is a named pipe (FIFO) [[ -p pipefile ]] -S File is a socket [[ -S /var/run/docker.sock ]] ...

1. Diagnosing the Problem Check Network Speed Use iperf3 to measure network throughput between the two Macs. # On Mac B (SMB Server) iperf3 -s # On Mac A (Client) iperf3 -c <Mac B's IP> If the speed is close to 1Gbps, the network is performing as expected. If it’s significantly lower (e.g., below 500 Mbps), there may be a bottleneck in the network hardware or cabling. Check Latency with ping Use ping to measure round-trip time between Mac A and Mac B. ping -c 10 <Mac B's IP> ...

Download the latest copy of SUSE tumbleweed Burn this ISO image to thumb drive dd if=<location_of_iso> of=/dev/rdisk<thumbdrive_disk_number> bs=1m Put this in the front USB slot of the Brix Power off and power on (a hard reboot is important) Press the delete key repeatedly to get to Brix BIOS Change boot order in boot section to specify USB drive as 1st boot Save and Exit (reboot on thumb drive) Run installer ...