How to append contents of multiple files into one file

Question

I want to copy the contents of five files to one file as is. I tried doing it using cp for each file. But that overwrites the contents copied from the previous file. I also

Answer 1

if your files contain headers and you want remove them in the output file, you can use:

for f in `ls *.txt`; do sed '2,$!d' $f >> 0.out; done