Linux Command Line · 14-day planAll days
Day 12 of 14 35 minfor & whileFunctionsReading files
Let the computer do repetitive work. Loop over lists, files and number ranges with for, repeat with while, read a file line by line, organise scripts into functions with arguments and return values, and build a small backup script that puts it all together.
By the end of today you can
- Loop over words, files and number ranges with for
- Repeat while a condition holds, and read a file line by line
- Use break and continue to control loops
- Write functions with arguments, local variables and return codes
- Combine loops and functions in a practical backup script
What's inside
- 4 sections
- 3 diagrams and mind maps
- 6 code examples you can run
- 5-question quiz
- 1for loops
- 2while loops
- 3Functions
- 4Putting it together: a backup script
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