get

ubuntu

snap install ttyplot

debian

apt install ttyplot

gentoo

emerge -av app-admin/ttyplot

macOS

brew install ttyplot

termux

pkg install ttyplot

FreeBSD

pkg install ttyplot

misc

examples

cpu usage from vmstat using awk to pick the right column

vmstat -n 1 | gawk '{ print 100-int($(NF-2)); fflush(); }' | ttyplot -s 100 -t "CPU Usage" -u "%"

memory usage on Linux using free, grep, tr and cut

free -m -s 1 | stdbuf -o0 grep "^Mem:" | stdbuf -o0 tr -s " " | stdbuf -o0 cut -d" " -f3 | ttyplot -t "MEM Usage" -u "MB"

memory usage on macOS

vm_stat 1 | awk '{ print int($2)*4096/1024^3; fflush(); }' | ttyplot -t "MacOS Memory Usage" -u GB

number of processes in running and io blocked state

vmstat -n 1 | perl -lane 'BEGIN{$|=1} print "@F[0,1]"' | ttyplot -2 -t "procs in R and D state"

load average via uptime and awk

{ while true; do uptime | gawk '{ gsub(/,/, ""); print $(NF-2) }'; sleep 1; done } | ttyplot -t "load average" -s load

ping plot with sed

ping 8.8.8.8 | sed -u 's/^.*time=//g; s/ ms//g' | ttyplot -t "ping to 8.8.8.8" -u ms

wifi signal level in -dBM (higher is worse) using iwconfig

{ while true; do iwconfig 2>/dev/null | grep "Signal level" | sed -u 's/^.*Signal level=-//g; s/dBm//g'; sleep 1; done } | ttyplot -t "wifi signal" -u "-dBm" -s 90

wifi signal on macOS

{ while true; do /System/Library/PrivateFrameworks/Apple80211.framework/Versions/Current/Resources/airport --getinfo | awk '/agrCtlRSSI/ {print -$2; fflush();}'; sleep 1; done } | ttyplot -t "wifi signal" -u "-dBm" -s 90

cpu temperature from proc

{ while true; do awk '{ printf("%.1f\n", $1/1000) }' /sys/class/thermal/thermal_zone0/temp; sleep 1; done } | ttyplot -t "cpu temp" -u C

fan speed from lm-sensors using grep, tr and cut

{ while true; do sensors | grep fan1: | tr -s " " | cut -d" " -f2; sleep 1; done } | ttyplot -t "fan speed" -u RPM

memory usage from rrdtool and collectd using awk

{ while true; do rrdtool lastupdate /var/lib/collectd/rrd/$(hostname)/memory/memory-used.rrd | awk 'END { print ($NF)/1024/1024 }'; sleep 1; done } | ttyplot -m $(awk '/MemTotal/ { print ($2)/1024 }' /proc/meminfo) -t "Memoru Used" -u MB

bitcoin price chart using curl and jq

{ while true; do curl -sL https://api.coindesk.com/v1/bpi/currentprice.json  | jq .bpi.USD.rate_float; sleep 600; done } | ttyplot -t "bitcoin price" -u usd

stock quote chart

{ while true; do curl -sL https://api.iextrading.com/1.0/stock/googl/price; echo; sleep 600; done } | ttyplot -t "google stock price" -u usd

prometheus load average via node_exporter

{ while true; do curl -s  http://10.4.7.180:9100/metrics | grep "^node_load1 " | cut -d" " -f2; sleep 1; done } | ttyplot

network/disk throughput examples

snmp network throughput for an interface using snmpdelta

snmpdelta -v 2c -c public -Cp 10 10.23.73.254 1.3.6.1.2.1.2.2.1.{10,16}.9 | gawk '{ print $NF/1000/1000/10; fflush(); }' | ttyplot -2 -t "interface 9 throughput" -u Mb/s

network throughput for an interface using netstat (OpenBSD, FreeBSD)

netstat -b -w ${1} -I em0 | awk 'NR>3 { print $1/1024; print $2/1024; fflush }' | ttyplot -2 -t "IN/OUT Bandwidth in KB/s (${1}s resolution)" -u "KB/s" -c "#"

local network throughput for all interfaces combined from sar

sar  -n DEV 1 | gawk '{ if($6 ~ /rxkB/) { print iin/1000; print out/1000; iin=0; out=0; fflush(); } iin=iin+$6; out=out+$7; }' | ttyplot -2 -u "MB/s"

disk throughput from iostat

iostat -xmy 1 nvme0n1 | stdbuf -o0 tr -s " " | stdbuf -o0 cut -d " " -f 4,5 | ttyplot -2 -t "nvme0n1 throughput" -u MB/s

rate calculator for counters

snmp network throughput for an interface using snmpget

{ while true; do snmpget -v 2c -c public 10.23.73.254 1.3.6.1.2.1.2.2.1.{10,16}.9 | awk '{ print $NF/1000/1000; }'; sleep 10; done } | ttyplot -2 -r -u "MB/s"

local interface throughput using ip link and jq

{ while true; do ip -s -j link show enp0s31f6 | jq .[].stats64.rx.bytes/1024/1024,.[].stats64.tx.bytes/1024/1024; sleep 1; done } | ttyplot -r -2 -u "MB/s"

prometheus node exporter disk throughput for /dev/sda

{ while true; do curl -s http://10.11.0.173:9100/metrics | awk '/^node_disk_.+_bytes_total{device="sda"}/ { printf("%f\n", $2/1024/1024); }'; sleep 1; done } | ttyplot -r -2 -u MB/s -t "10.11.0.173 sda writes"

using colors for different elements

ping 8.8.8.8 | sed -u 's/^.*time=//g; s/ ms//g' | ttyplot -t "ping to 8.8.8.8" -u ms -C 2,3,4,5

network throughput from collectd with rrdtool and awk

{ while true; do rrdtool lastupdate /var/lib/collectd/rrd/$(hostname)/interface-enp1s0/if_octets.rrd | awk 'END { print ($2)/1000/1000, ($3)/1000/1000 }'; sleep 10; done } | ttyplot -2 -r -t "enp1s0 throughput" -u MB/s

flags

  ttyplot [-2] [-r] [-c plotchar] [-s scale] [-m max] [-M min] [-t title] [-u unit]  ttyplot -h  ttyplot -v  -2 read two values and draw two plots, the second one is in reverse video  -r rate of a counter (divide value by measured sample interval)  -c character to use for plot line, eg @ # % . etc  -e character to use for error line when value exceeds hardmax (default: e)  -E character to use for error symbol displayed when value is less than hardmin (default: v)  -s initial scale of the plot (can go above if data input has larger value)  -m maximum value, if exceeded draws error line (see -e), upper-limit of plot scale is fixed  -M minimum value, if entered less than this, draws error symbol (see -E), lower-limit of the plot scale is fixed  -t title of the plot  -u unit displayed beside vertical bar  -C color[,axes,text,title]  set colors (0-7) for elements:     First value: plot line color     Second value: axes color (optional)     Third value: text color (optional)     Fourth value: title color (optional)     Example: -C 1,2,3,4 or -C 1,2 or -C 1     Colors: 0=black, 1=red, 2=green, 3=yellow, 4=blue, 5=magenta, 6=cyan, 7=white  -v print the current version and exit  -h print this help message and exit

key bindings

  q  quit  r  toggle rate mode

frequently questioned answers

ttyplot quits when there is no more data

{ echo 1 2 3; cat; } | ttyplot

ttyplot erases screen when exiting

echo 1 2 3 | TERM=vt100 ttyplot

infocmp -I $TERM | sed -e 's/smcup=[^,]*,//g' -e 's/rmcup=[^,]*,//g' | tic -

when running interactively and non-numeric data is entered (eg. some key) ttyplot hangs

stdio buffering

legal stuff

License: Apache 2.0Copyright (c) 2013-2025 Antoni SawickiCopyright (c) 2023 Edgar BonetCopyright (c) 2023 Sebastian Pipping