Prints contribuion graph in terminal for a given user for a given number of days

print-gh-contrib-graph.sh

#!/bin/sh
## Usage: print-gh-contrib-graph username num_of_days
##
##   username      GitHub username.
##   num_of_days   Number of days in the past to print graph for.
##
function print_graph {

    if [ "$#" -ne 2 ]; then
        echo "Expected 2 arguments: username and a number of days"
        exit
    fi

    local IFS=$'\n'
    intensity=`curl -s https://github-contributions.now.sh/api/v1/"$1" | jq -r --arg NUM_OF_DAYS "$2" '[.contributions[] | select ( .date | strptime("%Y-%m-%d")| mktime < now)][:$NUM_OF_DAYS|tonumber]| .[].intensity'`;
    intensity=($intensity); 
    for (( i=${#intensity[@]} - 1; i>=0; i-- )); do
        if ((intensity[$i] == 0)); then
            echo -en "\e[48;5;248m \e[0m" ;
        elif ((intensity[$i] == 1)); then
            echo -en "\e[48;5;40m \e[0m" ;
        elif ((intensity[$i] == 2)); then
            echo -en "\e[48;5;34m \e[0m" ;
        elif ((intensity[$i] == 3)); then
            echo -en "\e[48;5;28m \e[0m" ;
        elif ((intensity[$i] == 4)); then
            echo -en "\e[48;5;22m \e[0m" ;
        fi 
    done ; 
    echo
}

print_graph $1 $2

Prerequisite

• curl - command line tool and library for transferring data with URLs
• jq - is a lightweight and flexible command-line JSON processor.