Conky Linux Mint 19.1

Instale o conky:

sudo apt install conky-all

Crie um arquivo .conkyrc , na pasta do usuário, com o conteúdo abaixo:
Será preciso fazer ajustes conforme a configuração do seu computador.

alignment middle_right
background no
use_xft yes
font Ubuntu Mono:size=9
xftalpha 0
update_interval 2.0
total_run_times 0
own_window yes
own_window_transparent no
#own_window_type desktop
own_window_argb_visual yes
own_window_argb_value 30
own_window_hints undecorated,below,sticky,skip_taskbar,skip_pager
double_buffer yes
minimum_size 200 200
maximum_width 200
draw_shades no
draw_outline yes
draw_borders no
draw_graph_borders no
default_color 555
default_shade_color black
default_outline_color black
alignment top_right
gap_x 6
gap_y 40
no_buffers yes
cpu_avg_samples 2
text_buffer_size 1024
override_utf8_locale yes
uppercase no
double_buffer yes

TEXT
${color 999}${alignc}${exec lsb_release -d -s}${color}
$hr
Kernel: ${alignr}$kernel
Máquina: ${alignr}${nodename}
Rede: ${alignr}${wireless_essid wlp3s0} ${color 999}${wireless_link_qual_perc wlp3s0}%${color}
Gateway: ${alignr}${gw_ip}
IP local: ${alignr}${if_up wlp3s0}${addr wlp3s0}
IP externo: ${alignr}${execi 60 curl  ipinfo.io/ip}
${downspeedgraph wlp3s0 222222 009ACD}
Down ${totaldown wlp3s0}${alignr}${color 999}${downspeed wlp3s0}/s${color}
${upspeedgraph wlp3s0 222222 6E8B3D}
Up   ${totalup wlp3s0}${alignr}${upspeed wlp3s0}/s
#Freq ${alignr}${freq} MHz
#Process ${alignr}$processes
#Running ${alignr}($running_processes)

/${alignr}${fs_bar 8,150 /}
${fs_used /} / ${fs_size /} ${alignr}${color 999}${fs_free /}${color}

/dados${alignr}${fs_bar 8,150 /dados}
${fs_used /dados} / ${fs_size /dados} ${alignr}${color 999}${fs_free /dados}${color}

RAM${alignr}${membar 8, 150}
$mem / $memmax ${alignr}${color 999}$memeasyfree${color}
${cpugraph 222222 FF4500}
${color 999}${acpitemp}°C${color}${alignr}${cpu cpu0}%  ${cpu cpu1}%  ${cpu cpu2}%  ${cpu cpu3}%

CPU $alignr CPU%  MEM%
${color 999}${top name 1}$alignr${top cpu 1}${top mem 1}${color}
${color 666}${top name 2}$alignr${top cpu 2}${top mem 2}${color}
${color 333}${top name 3}$alignr${top cpu 3}${top mem 3}${color}
${color 222}${top name 4}$alignr${top cpu 4}${top mem 4}${color}
${color 111}${top name 5}$alignr${top cpu 5}${top mem 5}${color}

MEM $alignr CPU%  MEM%
${color 999}${top_mem name 1}$alignr${top_mem cpu 1}${top_mem mem 1}${color}
${color 666}${top_mem name 2}$alignr${top_mem cpu 2}${top_mem mem 2}${color}
${color 333}${top_mem name 3}$alignr${top_mem cpu 3}${top_mem mem 3}${color}
${color 222}${top_mem name 4}$alignr${top_mem cpu 4}${top_mem mem 4}${color}
${color 111}${top_mem name 5}$alignr${top_mem cpu 5}${top_mem mem 5}${color}

Uptime: ${color 666}${alignr}$uptime${color}
#${time %e/%m/%Y %A}${alignr}${time %H:%M}
Detalhe do conky

Para saber mais sobre as opções: http://conky.sourceforge.net/config_settings.html