Tenho utilizado bastante o formato json e irei deixar salvo nesse tópico alguns comandos úteis para exibir a saída de comandos do terminal em json.

/proc/meminfo:
jq -Rsn ' [inputs | split("\n\n") | map(select(length > 0 and . != "\n")) | .[] | split("\n") | map( split(":") | {(.[0] | gsub("\t"; "") | gsub(" "; "_")): (.[1] | ltrimstr(" "))} ) | add ]' /proc/cpuinfo

/proc/cpuinfo:

jq -Rsn ' [inputs | split("\n") | map(select(length > 0)) | map( split(":") | {(.[0] | gsub(" "; "_")): (.[1] | ltrimstr(" "))} ) | add ]' /proc/meminfo

/proc/mounts:
jq -Rsn ' [inputs | split("\n") | map(select(length > 0)) | map( split(" ") | { "device": .[0], "mount_point": .[1] | gsub("\\\\040"; " "), "file_system_type": .[2], "mount_options": .[3] | gsub("\\\\040"; " "), "dump": .[4], "pass": .[5] } ) ]' /proc/mounts

lspci:
lspci -knn | jq -Rsn ' [inputs | split("\n") | reduce .[] as $line ({}; if $line | test("^[0-9a-f:.]+") then if .device then .devices += [.device] end | .device = ($line | capture("^(?<slot>[0-9a-f:.]+) (?<description>.+) \\[(?<vendorID>[0-9a-f]{4}):(?<productID>[0-9a-f]{4})\\]")) elif $line | test("^\\tSubsystem") then .device.subsystem = ($line | capture("^\\tSubsystem: (?<subsystem>.+)").subsystem) elif $line | test("^\\tKernel driver in use") then .device.kernelDriver = ($line | capture("^\\tKernel driver in use: (?<kernelDriver>.+)").kernelDriver) elif $line | test("^\\tKernel modules") then .device.kernelModules = ($line | capture("^\\tKernel modules: (?<kernelModules>.+)").kernelModules) else . end) | .devices += [.device] | select(. != null and . != [null]) | flatten | map(select(.slot))] '

lsusb:
lsusb | jq -Rsn ' [inputs | split("\n") | map( select(length > 0) | capture("^Bus (?<bus>[0-9]+) Device (?<device>[0-9]+): ID (?<idVendor>[0-9a-f]{4}):(?<idProduct>[0-9a-f]{4}) (?<description>.+)$") ) | map(select(.bus)) ]'