Regarding separate a single file into multiple files according to line separation

Question

Currently, I have a plain text file, A, such as

lowest priority
very high significance.
outstanding
very novel

In this file, every line contains a sentence. I want to separate this file into multiple files, and each file is composed of a single line of the original file, A. For instance, with respect to the example file A, I want to generate four files:

• A1, which has single line, lowest priority
• A2, which has single line, very high significance
• A3, which has single line, outstanding
• A4, which has single line, very novel.

How to do that under linux?

Answer 1

You can easily do it using split command. E.g.:

split -l1 -d -a 3 A A

Check man split for details.

Answer 2

Also, awk is pretty straightforward:

awk '{filename = FILENAME NR; print > filename; close(filename)}' A

Answer 3

n=1; while IFS= read -r line; do printf %s\\n "$line" > A$n; n=$((n+1)); done <A