To move files from one folder to other folder use 'mv' command.
To move file_1, file_2 from Trial_1 folder to Trial_2 folder use the following commands in terminal.
sada@titan:~/Trial_1$ ls
file_1 file_2 Trial_2
sada@titan:~/Trial_1$ mv file_1 file_2 Trial_2/
sada@titan:~/Trial_1$ ls
Trial_2
For example:
To move file_1, file_2 from Trial_1 folder to Trial_2 folder use the following commands in terminal.
sada@titan:~/Trial_1$ ls
file_1 file_2 Trial_2
sada@titan:~/Trial_1$ mv file_1 file_2 Trial_2/
sada@titan:~/Trial_1$ ls
Trial_2