how enter too command in one line in linux with out ; code example

Example 1: how to run two commands in linux

ls ; pwd ; whoami

Example 2: two bash coomand in same line

# cmd1 && cmd2
$ cd myfolder && ls  # run ls only after cd to myfolder

# cmd1; cmd2
$ cd myfolder; ls   # no matter cd to myfolder successfully, run ls

# cmd1 || cmd2
$ cd myfolder || ls  # if failed cd to myfolder, `ls` will run