how to find the file in ubuntu code example

Example 1: ubuntu find file

$ find /path/to/file/ -iname filename

Example 2: how to find a file in linux terminal

find /path/to/folder/ -iname *file_name_portion*

Example 3: find in files ubuntu

grep -r 'pattern_to_match' directory_to_search

Example 4: search file in ubuntu

$ find /path/to/file/