Dari pipeline Shell ke skrip Bash

Dalam latihan ini, Anda bekerja sebagai analis olahraga untuk liga sepak bola Bulgaria. Anda menerima beberapa data tentang hasil final besar tahun 1932 dalam sebuah file csv. File tersebut dipisahkan dengan koma dengan format Year,Winner,Winner Goals yang mencantumkan tahun pertandingan, tim pemenang, dan berapa banyak gol yang dicetak tim pemenang, misalnya 1932,Arda,4.

Tugas Anda adalah membuat skrip Bash dari perintah shell yang dipipa untuk mengagregasi berapa kali setiap tim menang.

Jangan khawatir tentang bagian tail -n +2, ini hanya memastikan kita tidak mengagregasi header CSV!

Latihan ini adalah bagian dari kursus

Pengantar Bash Scripting

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Latihan ini adalah bagian dari kursus

Pengantar Bash Scripting

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Save yourself time when performing complex repetitive tasks. You’ll begin this course by refreshing your knowledge of common command-line programs and arguments before quickly moving into the world of Bash scripting. You’ll create simple command-line pipelines and then transform these into Bash scripts. You’ll then boost your skills and learn about standard streams and feeding arguments to your Bash scripts.

Exercise 1: Pendahuluan dan penyegaran Exercise 2: Mengekstrak skor dengan shell Exercise 3: Mencari di sebuah buku dengan shell Exercise 4: Script Bash pertama Anda Exercise 5: Skrip Bash sederhana Exercise 6: Dari pipeline Shell ke skrip Bash

Latihan Saat Ini

Exercise 7: Ekstrak dan sunting menggunakan skrip Bash Exercise 8: Aliran standar & argumen Exercise 9: Menggunakan argumen dalam skrip Bash Exercise 10: Menggunakan argumen dengan data HR

Master the bread and butter of Bash scripts—variables! In this chapter, you’ll learn how to create basic string and numeric variables, and perform calculations on these variables. You’ll also learn about the magic of a shell-within-a-shell (shell-ception), opening up huge opportunities for advanced scripting.

Exercise 1: Basic variables in Bash Exercise 2: Using variables in Bash Exercise 3: Shell within a shell Exercise 4: Numeric variables in Bash Exercise 5: Converting Fahrenheit to Celsius Exercise 6: Extracting data from files Exercise 7: Arrays in Bash Exercise 8: Creating an array Exercise 9: Creating associative arrays Exercise 10: Climate calculations in Bash

Life isn't always linear and neither should your Bash scripts. In this chapter, you’ll take your Bash scripts to the next level by learning control statements. You’ll learn the differences between FOR, WHILE, IF, and CASE statements and how to use them in your Bash scripts. Armed with these new tools, you’ll be ready to create more advanced Bash scripts with conditional logic.

Exercise 1: IF statements Exercise 2: Sorting model results Exercise 3: Moving relevant files Exercise 4: FOR loops & WHILE statements Exercise 5: A simple FOR loop Exercise 6: Correcting a WHILE statement Exercise 7: Cleaning up a directory Exercise 8: CASE statements Exercise 9: Days of the week with CASE Exercise 10: Moving model results with CASE Exercise 11: Finishing a CASE statement

Give your Bash scripts a powerful new addition by building useful functions to process data and variables. In this last chapter, you will learn the structure of functions in Bash, how to use functions to help automate frequent tasks, and program your scripts to run on schedule without needing to even lift a finger.

Exercise 1: Basic functions in Bash Exercise 2: Uploading model results to the cloud Exercise 3: Get the current day Exercise 4: Arguments, return values, and scope Exercise 5: A percentage calculator Exercise 6: Sports analytics function Exercise 7: Summing an array Exercise 8: Scheduling your scripts with Cron Exercise 9: Analyzing a crontab schedule Exercise 10: Creating cronjobs Exercise 11: Scheduling cronjobs with crontab Exercise 12: Thanks and wrap up