➜  ~ sudo smartctl -a /dev/nvme0
smartctl 7.1 2019-12-30 r5022 [x86_64-linux-5.6.11-arch1-1] (local build)
Copyright (C) 2002-19, Bruce Allen, Christian Franke, [URL]www.smartmontools.org[/URL]

=== START OF INFORMATION SECTION ===
Model Number:                       Samsung SSD 970 EVO Plus 250GB
Serial Number:                      S4EUNG0M269162V
Firmware Version:                   1B2QEXM7
PCI Vendor/Subsystem ID:            0x144d
IEEE OUI Identifier:                0x002538
Total NVM Capacity:                 250.059.350.016 [250 GB]
Unallocated NVM Capacity:           0
Controller ID:                      4
Number of Namespaces:               1
Namespace 1 Size/Capacity:          250.059.350.016 [250 GB]
Namespace 1 Utilization:            61.798.342.656 [61,7 GB]
Namespace 1 Formatted LBA Size:     512
Namespace 1 IEEE EUI-64:            002538 5291523b33
Local Time is:                      Tue May 12 19:32:14 2020 CEST
Firmware Updates (0x16):            3 Slots, no Reset required
Optional Admin Commands (0x0017):   Security Format Frmw_DL Self_Test
Optional NVM Commands (0x005f):     Comp Wr_Unc DS_Mngmt Wr_Zero Sav/Sel_Feat Timestmp
Maximum Data Transfer Size:         512 Pages
Warning  Comp. Temp. Threshold:     85 Celsius
Critical Comp. Temp. Threshold:     85 Celsius

Supported Power States
St Op     Max   Active     Idle   RL RT WL WT  Ent_Lat  Ex_Lat
 0 +     7.80W       -        -    0  0  0  0        0       0
 1 +     6.00W       -        -    1  1  1  1        0       0
 2 +     3.40W       -        -    2  2  2  2        0       0
 3 -   0.0700W       -        -    3  3  3  3      210    1200
 4 -   0.0100W       -        -    4  4  4  4     2000    8000

Supported LBA Sizes (NSID 0x1)
Id Fmt  Data  Metadt  Rel_Perf
 0 +     512       0         0

=== START OF SMART DATA SECTION ===
SMART overall-health self-assessment test result: PASSED

SMART/Health Information (NVMe Log 0x02)
Critical Warning:                   0x00
Temperature:                        38 Celsius
Available Spare:                    66%
Available Spare Threshold:          10%
Percentage Used:                    0%
Data Units Read:                    1.624.091 [831 GB]
Data Units Written:                 1.053.714 [539 GB]
Host Read Commands:                 22.298.060
Host Write Commands:                25.821.150
Controller Busy Time:               54
Power Cycles:                       336
Power On Hours:                     111
Unsafe Shutdowns:                   47
Media and Data Integrity Errors:    35
Error Information Log Entries:      35
Warning  Comp. Temperature Time:    0
Critical Comp. Temperature Time:    0
Temperature Sensor 1:               38 Celsius
Temperature Sensor 2:               37 Celsius

Error Information (NVMe Log 0x01, max 64 entries)
Num   ErrCount  SQId   CmdId  Status  PELoc          LBA  NSID    VS
  0         35     2  0x03d1  0x4502  0x000     23872320     1     -
  1         34     2  0x03ed  0x4502  0x000     42527488     1     -
  2         33     2  0x03eb  0x4502  0x000     42527200     1     -
  3         32     2  0x03de  0x4502  0x000      3257600     1     -
  4         31    11  0x0180  0x4502  0x000     56028518     1     -

$ cat /etc/asound.conf
ctl.!default {
 type hw card sndrpihifiberry
}
 
pcm.mmap0 {
 type mmap_emul;
 slave {
  #pcm "hw:CARD=sndrpihifiberry,DEV=0"
  pcm "hw:0"
 }
}
 
pcm.swap {
 type plug
 slave {
  pcm mmap0;
 }
 ttable.0.1 1
 ttable.1.0 1
}
 
pcm.mono_left {
 type plug;
 slave {
  pcm mmap0;
 }
 ttable.0.0 0.5
 ttable.1.0 0.5
}
 
pcm.mono_right {
 type plug;
 slave {
  pcm mmap0;
 }
 ttable.0.1 0.5
 ttable.1.1 0.5
}
 
pcm.!default mono_left
#pcm.!default mono_right
#pcm.!default swap
#
#

ssh A ssh B

alias alien-ssh='ssh -o StrictHostKeyChecking=no -o UserKnownHostsFile=/dev/null'

pcm.makemono {
    type route
    slave.pcm sndrpihifiberry
    ttable {
        0.0 1    # in-channel 0, out-channel 0, 100% volume
        1.0 1    # in-channel 1, out-channel 0, 100% volume
    }
}