Linux basic search - MdNor/rocksoft GitHub Wiki
Use the find command to find a file easily.
$find {directory-name} -name {filename}
1) Search for a file(eg: abc123.txt) in entire system
find / -name 'abc123.txt'
2) Search for a file(eg: abc123.txt) in specific directory(eg: /home)
find /home -name 'abc123.txt'