how to find file in ubuntu code example

Example 1: ubuntu find file

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

Example 2: terminal how to find a file name

find / -name NAME.EXTENSION

Example 3: ubuntu find file with text

grep -r someWordToSearchHere *

Example 4: find in files ubuntu

grep -r 'pattern_to_match' directory_to_search

Example 5: ubuntu search file in specific folder

// Using backslash and asterisk (\*) at the end will search for all files that start with your search term (in this case "readme"). So you would also be able to find "readme2" etc. 
find . -name readme\*