Create a file with touch

$ touch bear
$ ls -l
total 0
-rw-------   1 johnd           0 Oct  2 10:40 bear
$ touch lion tiger
$ ls -l
total 0
-rw-------   1 johnd           0 Oct  2 10:40 bear
-rw-------   1 johnd           0 Oct  2 10:43 lion
-rw-------   1 johnd           0 Oct  2 10:43 tiger
$