linux search for file or folder code example

Example 1: find by name linux

# dot is curr dir 
find . -name "*.txt"

Example 2: linux find file

# syntax 
# find *</path/to/dir> '(' *<Filter-1> *<and/or-operator> *<filter-2> ')'

# example 
find . '(' -name "Test*.pm" -a ! -name 'Useless*' ')'