#!/bin/bash # Author: Alexander Epstein https://github.com/alexanderepstein currentVersion="1.11.1" configuredClient="" configuredPython="" ## This function determines which http get tool the system has installed and returns an error if there isnt one getConfiguredClient() { if command -v curl &>/dev/null ; then configuredClient="curl" elif command -v wget &>/dev/null ; then configuredClient="wget" elif command -v fetch &>/dev/null ; then configuredClient="fetch" else echo "Error: This tool reqires either curl, wget, or fetch to be installed." return 1 fi } getConfiguredPython() { if command -v python2 &>/dev/null ; then configuredPython="python2" elif command -v python &>/dev/null ; then configuredPython="python" else echo "Error: This tool requires python 2 to be installed." return 1 fi } python() { case "$configuredPython" in python2) python2 "$@";; python) python "$@";; esac } ## Allows to call the users configured client without if statements everywhere httpGet() { case "$configuredClient" in curl) curl -A curl -s "$@";; wget) wget -qO- "$@";; fetch) fetch -o "...";; esac } checkInternet() { echo -e "GET http://google.com HTTP/1.0\n\n" | nc google.com 80 > /dev/null 2>&1 # query google with a get request if [ $? -eq 0 ]; then #check if the output is 0, if so no errors have occured and we have connected to google successfully return 0 else echo "Error: no active internet connection" >&2 #sent to stderr return 1 fi } ## This function grabs information about a stock and using python parses the ## JSON response to extrapolate the information for storage getStockInformation() { stockInfo=$(httpGet "https://www.alphavantage.co/query?function=GLOBAL_QUOTE&symbol=$1&apikey=KPCCCRJVMOGN9L6T") > /dev/null #grab the JSON response export PYTHONIOENCODING=utf8 #necessary for python in some cases echo $stockInfo | python -c "import sys, json; print json.load(sys.stdin)['Realtime Global Securities Quote']['02. Exchange Name']" > /dev/null 2>&1 || { echo "Not a valid stock symbol" ; exit 1; } #checking if we get any information back from the server if not chances are it isnt a valid stock symbol # The rest of the code is just extrapolating the data with python from the JSON response exchangeName=$(echo $stockInfo | python -c "import sys, json; print json.load(sys.stdin)['Realtime Global Securities Quote']['02. Exchange Name']") latestPrice=$(echo $stockInfo | python -c "import sys, json; print json.load(sys.stdin)['Realtime Global Securities Quote']['03. Latest Price']") open=$(echo $stockInfo | python -c "import sys, json; print json.load(sys.stdin)['Realtime Global Securities Quote']['04. Open (Current Trading Day)']") high=$(echo $stockInfo | python -c "import sys, json; print json.load(sys.stdin)['Realtime Global Securities Quote']['05. High (Current Trading Day)']") low=$(echo $stockInfo | python -c "import sys, json; print json.load(sys.stdin)['Realtime Global Securities Quote']['06. Low (Current Trading Day)']") close=$(echo $stockInfo | python -c "import sys, json; print json.load(sys.stdin)['Realtime Global Securities Quote']['07. Close (Previous Trading Day)']") priceChange=$(echo $stockInfo | python -c "import sys, json; print json.load(sys.stdin)['Realtime Global Securities Quote']['08. Price Change']") priceChangePercentage=$(echo $stockInfo | python -c "import sys, json; print json.load(sys.stdin)['Realtime Global Securities Quote']['09. Price Change Percentage']") volume=$(echo $stockInfo | python -c "import sys, json; print json.load(sys.stdin)['Realtime Global Securities Quote']['10. Volume (Current Trading Day)']") lastUpdated=$(echo $stockInfo | python -c "import sys, json; print json.load(sys.stdin)['Realtime Global Securities Quote']['11. Last Updated']") unset stockInfo # done with the JSON response not needed anymore } ## This function uses all the variables that are set by getStockInformation and ## prints them out to the user in a human readable format printStockInformation() { echo echo $symbol stock info echo "=============================================" echo "| Exchange Name: $exchangeName" echo "| Latest Price: $latestPrice" if [[ $open != "--" ]];then echo "| Open (Current Trading Day): $open"; fi ## sometime this is blank only print if value is present if [[ $high != "--" ]];then echo "| High (Current Trading Day): $high"; fi ## sometime this is blank only print if value is present if [[ $low != "--" ]];then echo "| Low (Current Trading Day): $low"; fi ## sometime this is blank only print if value is present echo "| Close (Previous Trading Day): $close" echo "| Price Change: $priceChange" if [[ $priceChangePercentage != "%" ]];then echo "| Price Change Percentage: $priceChangePercentage"; fi ## sometime this is blank only print if value is present if [[ $volume != "--" ]];then echo "| Volume (Current Trading Day): $volume"; fi ## sometime this is blank only print if value is present echo "| Last Updated: $lastUpdated" echo "=============================================" echo } ## This function queries google to determine the stock ticker for a certain company ## this allows the usage of stocks to be extended where now you can enter stocks appple ## and it will determine the stock symbol for apple is AAPL and move on from there getTicker() { response=$(httpGet "http://d.yimg.com/autoc.finance.yahoo.com/autoc?query=$1+$2+$3+$4+$5+$6+$7+$8+$9®ion=1&lang=en%22") > /dev/null symbol=$(echo $response | python -c "import sys, json; print json.load(sys.stdin)['ResultSet']['Result'][0]['symbol']") # using python to extrapolate the stock symbol unset response #just unsets the entire response after using it since all I need is the stock ticker } update() { # Author: Alexander Epstein https://github.com/alexanderepstein # Update utility version 1.2.0 # To test the tool enter in the defualt values that are in the examples for each variable repositoryName="Bash-Snippets" #Name of repostiory to be updated ex. Sandman-Lite githubUserName="alexanderepstein" #username that hosts the repostiory ex. alexanderepstein nameOfInstallFile="install.sh" # change this if the installer file has a different name be sure to include file extension if there is one latestVersion=$(httpGet https://api.github.com/repos/$githubUserName/$repositoryName/tags | grep -Eo '"name":.*?[^\\]",'| head -1 | grep -Eo "[0-9.]+" ) #always grabs the tag without the v option if [[ $currentVersion == "" || $repositoryName == "" || $githubUserName == "" || $nameOfInstallFile == "" ]];then echo "Error: update utility has not been configured correctly." >&2 exit 1 elif [[ $latestVersion == "" ]];then echo "Error: no active internet connection" >&2 exit 1 else if [[ "$latestVersion" != "$currentVersion" ]]; then echo "Version $latestVersion available" echo -n "Do you wish to update $repositoryName [Y/n]: " read -r answer if [[ "$answer" == "Y" || "$answer" == "y" ]] ;then cd ~ || { echo 'Update Failed' ; exit 1 ; } if [[ -d ~/$repositoryName ]]; then rm -r -f $repositoryName || { echo "Permissions Error: try running the update as sudo"; exit 1; } ; fi git clone "https://github.com/$githubUserName/$repositoryName" || { echo "Couldn't download latest version" ; exit 1; } cd $repositoryName || { echo 'Update Failed' ; exit 1 ;} git checkout "v$latestVersion" 2> /dev/null || git checkout "$latestVersion" 2> /dev/null || echo "Couldn't git checkout to stable release, updating to latest commit." chmod a+x install.sh #this might be necessary in your case but wasnt in mine. ./$nameOfInstallFile "update" || exit 1 cd .. rm -r -f $repositoryName || { echo "Permissions Error: update succesfull but cannot delete temp files located at ~/$repositoryName delete this directory with sudo"; exit 1; } else exit 1 fi else echo "$repositoryName is already the latest version" fi fi } usage() { echo "Stocks" echo "Description: Finds the latest information on a certain stock." echo "Usage: stocks [flag] or stocks [company/ticker]" echo " -u Update Bash-Snippet Tools" echo " -h Show the help" echo " -v Get the tool version" echo "Examples:" echo " stocks AAPL" echo " stocks Tesla" } getConfiguredPython || exit 1 getConfiguredClient || exit 1 checkInternet || exit 1 # check if we have a valid internet connection if this isnt true the rest of the script will not work so stop here while getopts "uvh" opt; do case $opt in \?) echo "Invalid option: -$OPTARG" >&2 exit 1 ;; h) usage exit 0 ;; v) echo "Version $currentVersion" exit 0 ;; u) update exit 0 ;; :) echo "Option -$OPTARG requires an argument." >&2 exit 1 ;; esac done if [[ $1 == "update" ]];then update exit 0 elif [[ $1 == "help" ]];then usage exit 0 elif [[ $# == "0" ]];then usage exit 0 else getTicker "$@" # the company name might have spaces so passing in all args allows for this getStockInformation $symbol # based on the stock symbol exrapolated by the getTicker function get information on the stock printStockInformation # print this information out to the user in a human readable format exit 0 fi