The shell globbing pattern is made of shell meta characters which are *[]? (and [^...]). Filenames that contain these special meta characters are called ambiguous file references because they do not refer to any one specific file. The process that the shell performs on these filenames is called pathname expansion or globbing. Write Shell globbing expressions to find files. 1. Files in /tmp directory whose names end with "db" followed by a digit character, as follows. find /dev -name A A = db[0-9]$ 2. Files in /tmp directory that have as part of their names a uppercase, a lowercase, a digit character in order (not consecutive), as follows. echo /tmp/B #B= 3. Hidden files in /tmp directory whose file names begin with a. (i.e. dot) in them, as follows. find /tmp -name C -maxdepth 1 ^a\. # C =