We might have need of merge many text files into one file .Instantly people do copy and paste manually .But It will become very tiresome if it has more and more files . It can be done very easily by simple shell commands .Therefore we don’t need any additional software or internet connection required to do so.
Open the command promote window using run command.
Then use move to location where you having all input files.
copy *.txt output.txt
cp *.txt output.txt
After that, all the text file content will be consolidated in single output file.