When you use cat to combine two files into a third file,the first line of the output contains the first line of the first file followed by the first line of the second file.

Question

Quizplus · Accepted Answer

When you use cat to combine two files into a third file, the output file will simply be a concatenation of the two input files without adding any additional lines or characters. Therefore, the first line of the output file will depend on the contents of the first file and second file separately, not on the fact that they were combined using cat.

When You Use Cat to Combine Two Files into a Third