$ hmm/bin/btop --help
Usage: btop [OPTIONS]

Options:
  -c, --config <file>     Path to a config file
  -d, --debug             Start in debug mode with additional logs and metrics
  -f, --filter <filter>   Set an initial process filter
      --force-utf         Override automatic UTF locale detection
  -l, --low-color         Disable true color, 256 colors only
  -p, --preset <id>       Start with a preset (0-9)
  -t, --tty               Force tty mode with ANSI graph symbols and 16 colors only
      --themes-dir <dir>  Path to a custom themes directory
      --no-tty            Force disable tty mode
  -u, --update <ms>       Set an initial update rate in milliseconds
      --default-config    Print default config to standard output
  -h, --help              Show this help message and exit
  -V, --version           Show a version message and exit (more with --version)

$ hmm/bin/btop --default-config | wc -l
269

$ hmm/bin/btop --default-config
#? Config file for btop v.1.4.5

#* Name of a btop++/bpytop/bashtop formatted ".theme" file, "Default" and "TTY" for builtin themes.
#* Themes should be placed in "../share/btop/themes" relative to binary or "$HOME/.config/btop/themes"
color_theme = "Default"

#* If the theme set background should be shown, set to False if you want terminal background transparency.
theme_background = true

#* Sets if 24-bit truecolor should be used, will convert 24-bit colors to 256 color (6x6x6 color cube) if false.
truecolor = true

#* Set to true to force tty mode regardless if a real tty has been detected or not.
#* Will force 16-color mode and TTY theme, set all graph symbols to "tty" and swap out other non tty friendly symbols.
force_tty = false

#* Define presets for the layout of the boxes. Preset 0 is always all boxes shown with default settings. Max 9 presets.
#* Format: "box_name:P:G,box_name:P:G" P=(0 or 1) for alternate positions, G=graph symbol to use for box.
#* Use whitespace " " as separator between different presets.
#* Example: "cpu:0:default,mem:0:tty,proc:1:default cpu:0:braille,proc:0:tty"
presets = "cpu:1:default,proc:0:default cpu:0:default,mem:0:default,net:0:default cpu:0:block,net:0:tty"

#* Set to True to enable "h,j,k,l,g,G" keys for directional control in lists.
#* Conflicting keys for h:"help" and k:"kill" is accessible while holding shift.
vim_keys = false

#* Rounded corners on boxes, is ignored if TTY mode is ON.
rounded_corners = true

#* Use terminal synchronized output sequences to reduce flickering on supported terminals.
terminal_sync = true

#* Default symbols to use for graph creation, "braille", "block" or "tty".
#* "braille" offers the highest resolution but might not be included in all fonts.
#* "block" has half the resolution of braille but uses more common characters.
#* "tty" uses only 3 different symbols but will work with most fonts and should work in a real TTY.
#* Note that "tty" only has half the horizontal resolution of the other two, so will show a shorter historical view.
graph_symbol = "braille"

# Graph symbol to use for graphs in cpu box, "default", "braille", "block" or "tty".
graph_symbol_cpu = "default"

# Graph symbol to use for graphs in gpu box, "default", "braille", "block" or "tty".
graph_symbol_gpu = "default"

# Graph symbol to use for graphs in cpu box, "default", "braille", "block" or "tty".
graph_symbol_mem = "default"

# Graph symbol to use for graphs in cpu box, "default", "braille", "block" or "tty".
graph_symbol_net = "default"

# Graph symbol to use for graphs in cpu box, "default", "braille", "block" or "tty".
graph_symbol_proc = "default"

#* Manually set which boxes to show. Available values are "cpu mem net proc" and "gpu0" through "gpu5", separate values with whitespace.
shown_boxes = "cpu mem net proc"

#* Update time in milliseconds, recommended 2000 ms or above for better sample times for graphs.
update_ms = 2000

#* Processes sorting, "pid" "program" "arguments" "threads" "user" "memory" "cpu lazy" "cpu direct",
#* "cpu lazy" sorts top process over time (easier to follow), "cpu direct" updates top process directly.
proc_sorting = "cpu lazy"

#* Reverse sorting order, True or False.
proc_reversed = false

#* Show processes as a tree.
proc_tree = false

#* Use the cpu graph colors in the process list.
proc_colors = true

#* Use a darkening gradient in the process list.
proc_gradient = true

#* If process cpu usage should be of the core it's running on or usage of the total available cpu power.
proc_per_core = false

#* Show process memory as bytes instead of percent.
proc_mem_bytes = true

#* Show cpu graph for each process.
proc_cpu_graphs = true

#* Use /proc/[pid]/smaps for memory information in the process info box (very slow but more accurate)
proc_info_smaps = false

#* Show proc box on left side of screen instead of right.
proc_left = false

#* (Linux) Filter processes tied to the Linux kernel(similar behavior to htop).
proc_filter_kernel = false

#* In tree-view, always accumulate child process resources in the parent process.
proc_aggregate = false

#* Should cpu and memory usage display be preserved for dead processes when paused.
keep_dead_proc_usage = false

#* Sets the CPU stat shown in upper half of the CPU graph, "total" is always available.
#* Select from a list of detected attributes from the options menu.
cpu_graph_upper = "Auto"

#* Sets the CPU stat shown in lower half of the CPU graph, "total" is always available.
#* Select from a list of detected attributes from the options menu.
cpu_graph_lower = "Auto"

#* If gpu info should be shown in the cpu box. Available values = "Auto", "On" and "Off".
show_gpu_info = "Auto"

#* Toggles if the lower CPU graph should be inverted.
cpu_invert_lower = true

#* Set to True to completely disable the lower CPU graph.
cpu_single_graph = false

#* Show cpu box at bottom of screen instead of top.
cpu_bottom = false

#* Shows the system uptime in the CPU box.
show_uptime = true

#* Shows the CPU package current power consumption in watts. Requires running `make setcap` or `make setuid` or running with sudo.
show_cpu_watts = true

#* Show cpu temperature.
check_temp = true

#* Which sensor to use for cpu temperature, use options menu to select from list of available sensors.
cpu_sensor = "Auto"

#* Show temperatures for cpu cores also if check_temp is True and sensors has been found.
show_coretemp = true

#* Set a custom mapping between core and coretemp, can be needed on certain cpus to get correct temperature for correct core.
#* Use lm-sensors or similar to see which cores are reporting temperatures on your machine.
#* Format "x:y" x=core with wrong temp, y=core with correct temp, use space as separator between multiple entries.
#* Example: "4:0 5:1 6:3"
cpu_core_map = ""

#* Which temperature scale to use, available values: "celsius", "fahrenheit", "kelvin" and "rankine".
temp_scale = "celsius"

#* Use base 10 for bits/bytes sizes, KB = 1000 instead of KiB = 1024.
base_10_sizes = false

#* Show CPU frequency.
show_cpu_freq = true

#* How to calculate CPU frequency, available values: "first", "range", "lowest", "highest" and "average".
freq_mode = "first"

#* Draw a clock at top of screen, formatting according to strftime, empty string to disable.
#* Special formatting: /host = hostname | /user = username | /uptime = system uptime
clock_format = "%X"

#* Update main ui in background when menus are showing, set this to false if the menus is flickering too much for comfort.
background_update = true

#* Custom cpu model name, empty string to disable.
custom_cpu_name = ""

#* Optional filter for shown disks, should be full path of a mountpoint, separate multiple values with whitespace " ".
#* Only disks matching the filter will be shown. Prepend exclude= to only show disks not matching the filter. Examples: disk_filter="/boot /home/user", disks_filter="exclude=/boot /home/user"
disks_filter = ""

#* Show graphs instead of meters for memory values.
mem_graphs = true

#* Show mem box below net box instead of above.
mem_below_net = false

#* Count ZFS ARC in cached and available memory.
zfs_arc_cached = true

#* If swap memory should be shown in memory box.
show_swap = true

#* Show swap as a disk, ignores show_swap value above, inserts itself after first disk.
swap_disk = true

#* If mem box should be split to also show disks info.
show_disks = true

#* Filter out non physical disks. Set this to False to include network disks, RAM disks and similar.
only_physical = true

#* Read disks list from /etc/fstab. This also disables only_physical.
use_fstab = true

#* Setting this to True will hide all datasets, and only show ZFS pools. (IO stats will be calculated per-pool)
zfs_hide_datasets = false

#* Set to true to show available disk space for privileged users.
disk_free_priv = false

#* Toggles if io activity % (disk busy time) should be shown in regular disk usage view.
show_io_stat = true

#* Toggles io mode for disks, showing big graphs for disk read/write speeds.
io_mode = false

#* Set to True to show combined read/write io graphs in io mode.
io_graph_combined = false

#* Set the top speed for the io graphs in MiB/s (100 by default), use format "mountpoint:speed" separate disks with whitespace " ".
#* Example: "/mnt/media:100 /:20 /boot:1".
io_graph_speeds = ""

#* Set fixed values for network graphs in Mebibits. Is only used if net_auto is also set to False.
net_download = 100

net_upload = 100

#* Use network graphs auto rescaling mode, ignores any values set above and rescales down to 10 Kibibytes at the lowest.
net_auto = true

#* Sync the auto scaling for download and upload to whichever currently has the highest scale.
net_sync = true

#* Starts with the Network Interface specified here.
net_iface = ""

#* "True" shows bitrates in base 10 (Kbps, Mbps). "False" shows bitrates in binary sizes (Kibps, Mibps, etc.). "Auto" uses base_10_sizes.
base_10_bitrate = "Auto"

#* Show battery stats in top right if battery is present.
show_battery = true

#* Which battery to use if multiple are present. "Auto" for auto detection.
selected_battery = "Auto"

#* Show power stats of battery next to charge indicator.
show_battery_watts = true

#* Set loglevel for "~/.local/state/btop.log" levels are: "ERROR" "WARNING" "INFO" "DEBUG".
#* The level set includes all lower levels, i.e. "DEBUG" will show all logging info.
log_level = "WARNING"

#* Measure PCIe throughput on NVIDIA cards, may impact performance on certain cards.
nvml_measure_pcie_speeds = true

#* Measure PCIe throughput on AMD cards, may impact performance on certain cards.
rsmi_measure_pcie_speeds = true

#* Horizontally mirror the GPU graph.
gpu_mirror_graph = true

#* Set which GPU vendors to show. Available values are "nvidia amd intel"
shown_gpus = "nvidia amd intel"

#* Custom gpu0 model name, empty string to disable.
custom_gpu_name0 = ""

#* Custom gpu1 model name, empty string to disable.
custom_gpu_name1 = ""

#* Custom gpu2 model name, empty string to disable.
custom_gpu_name2 = ""

#* Custom gpu3 model name, empty string to disable.
custom_gpu_name3 = ""

#* Custom gpu4 model name, empty string to disable.
custom_gpu_name4 = ""

#* Custom gpu5 model name, empty string to disable.
custom_gpu_name5 = ""