Terminal stock price display with Go
Programming Snapshot – Terminal Stock Portfolio
![© Lead Image © Jakub Krechowicz, 123RF.com © Lead Image © Jakub Krechowicz, 123RF.com](/var/linux_magazin/storage/images/issues/2023/277/wall-street-monitor/po-23612-123rf-jakub_krechowicz_123rf-diagramme_und_statistiken_resized.png/830611-1-eng-US/PO-23612-123RF-Jakub_Krechowicz_123RF-Diagramme_und_Statistiken_resized.png_medium.png)
© Lead Image © Jakub Krechowicz, 123RF.com
Instead of pulling up a browser to check his investments, Mike Schilli tracks stock prices with the help of a Go program to display graphs in the terminal.
According to US Vice President Kamala Harris, most US citizens would run out of money if faced by only $400 of unexpected costs. Since hearing this, I have made it my job to check every day whether I still have sufficient financial reserves. This includes tracking the current share price performance of some well-known companies. While there are many apps with portfolio settings that monitor a number of selected shares, I prefer to use command-line tools written in Go that run in a terminal window.
Figure 1 shows the output of the Go Pofo program (Pofo stands for portfolio). The Pofo program's output displays in six tiles (three at the bottom and three at the top), with each tile containing a bar chart to illustrate the share price performance of Apple, Netflix, Meta, Amazon, Tesla, and Google over the past six weeks. The program grabs the current and historical share price data from the data dealer Twelve Data [1] in a fraction of a second shortly after launching. Twelve Data offers a free basic plan for hobbyists that allows up to eight requests per minute and up to 800 per day before a limit kicks in.
The program fetches the closing prices in US dollars of the six monitored shares on the New York Stock Exchange for the past 45 business days. It does so in one fell swoop with a single request to the server. Figure 2 shows the data for the hyper-nervous Netflix stock in the period between June 16 and July 31, 2023. In this time frame, the value of the share fluctuated wildly between $413.17 and $477.59. Alas, in a graph of absolute values, it is still more or less impossible to see any fluctuations, because, after all, the difference only accounts for around 15 percent of the total value.
[...]
Buy this article as PDF
(incl. VAT)
Buy Linux Magazine
Subscribe to our Linux Newsletters
Find Linux and Open Source Jobs
Subscribe to our ADMIN Newsletters
Support Our Work
Linux Magazine content is made possible with support from readers like you. Please consider contributing when you’ve found an article to be beneficial.
![Learn More](https://www.linux-magazine.com/var/linux_magazin/storage/images/media/linux-magazine-eng-us/images/misc/learn-more/834592-1-eng-US/Learn-More_medium.png)
News
-
NVIDIA Released Driver for Upcoming NVIDIA 560 GPU for Linux
Not only has NVIDIA released the driver for its upcoming CPU series, it's the first release that defaults to using open-source GPU kernel modules.
-
OpenMandriva Lx 24.07 Released
If you’re into rolling release Linux distributions, OpenMandriva ROME has a new snapshot with a new kernel.
-
Kernel 6.10 Available for General Usage
Linus Torvalds has released the 6.10 kernel and it includes significant performance increases for Intel Core hybrid systems and more.
-
TUXEDO Computers Releases InfinityBook Pro 14 Gen9 Laptop
Sporting either AMD or Intel CPUs, the TUXEDO InfinityBook Pro 14 is an extremely compact, lightweight, sturdy powerhouse.
-
Google Extends Support for Linux Kernels Used for Android
Because the LTS Linux kernel releases are so important to Android, Google has decided to extend the support period beyond that offered by the kernel development team.
-
Linux Mint 22 Stable Delayed
If you're anxious about getting your hands on the stable release of Linux Mint 22, it looks as if you're going to have to wait a bit longer.
-
Nitrux 3.5.1 Available for Install
The latest version of the immutable, systemd-free distribution includes an updated kernel and NVIDIA driver.
-
Debian 12.6 Released with Plenty of Bug Fixes and Updates
The sixth update to Debian "Bookworm" is all about security mitigations and making adjustments for some "serious problems."
-
Canonical Offers 12-Year LTS for Open Source Docker Images
Canonical is expanding its LTS offering to reach beyond the DEB packages with a new distro-less Docker image.
-
Plasma Desktop 6.1 Released with Several Enhancements
If you're a fan of Plasma Desktop, you should be excited about this new point release.