obter dois arquivos juntos [duplicado]

Question

como eu poderia juntar dois arquivos como este

file1.txt :

ROW 1 3  5 654 56 5 56 65 6 54 4 3345 35 53 3 32 2 1
ROW2  6 65 456 67 687 78 89 657  435 34 534 5 435 5 2

file4.txt :

01010100000000000000000000000000000101010001010
1111111111111111111100100101000101001000000000
01000000000000000000000000000000000000000000000

para:

ROW 1 3  5 654 56 5 56 65 6 54 4 3345 35 53 3 32 2 1
ROW2  6 65 456 67 687 78 89 657  435 34 534 5 435 5 2
01010100000000000000000000000000000101010001010
1111111111111111111100100101000101001000000000
01000000000000000000000000000000000000000000000

    

Answer 1

Use cat :

cat file1.txt file4.txt

    

Answer 2

usando o gato :

cat file1.txt file4.txt > output.txt

Saída:

$ cat output.txt

ROW 1 3  5 654 56 5 56 65 6 54 4 3345 35 53 3 32 2 1
ROW2  6 65 456 67 687 78 89 657  435 34 534 5 435 5 2
01010100000000000000000000000000000101010001010
1111111111111111111100100101000101001000000000
01000000000000000000000000000000000000000000000

Se você não quiser criar um novo arquivo com facilidade:

cat file1.txt >> file4.txt 

Saída:

$ cat file4.txt

ROW 1 3  5 654 56 5 56 65 6 54 4 3345 35 53 3 32 2 1
ROW2  6 65 456 67 687 78 89 657  435 34 534 5 435 5 2
01010100000000000000000000000000000101010001010
1111111111111111111100100101000101001000000000
01000000000000000000000000000000000000000000000