Centos – `find` multiple -o -name condition AND ! -name

find . -type f -name "*.htm*" -o -name "*.js*" -o -name "*.txt"

is short for:

find . \( \( -type f -a -name "*.htm*" \) -o \
          \( -name "*.js*" \) -o \
          \( -name "*.txt" \) \
       \) -a -print

That is, because no action predicate is specified (only conditions), a -print action is implicitly added for the files that match the conditions.

(and, by the way, that would print non-regular .js files (the -type f only applies to .htm files)).

While:

find . -type f -name "*.htm*" -o -name "*.js*" -o -name "*.txt" \
  -exec sh -c 'echo "$0"' {} \;

is short for:

find . \( -type f -a -name "*.htm*" \) -o \
       \( -name "*.js*" \) -o \
       \( -name "*.txt" -a -exec sh -c 'echo "$0"' {} \; \)

For find (like in many languages), AND (-a; implicit when omitted) has precedence over OR (-o), and adding an explicit action predicate (here -exec) cancels the -print implicit action seen above. Here, you want:

find . -type f \( -name "*.htm*" -o -name "*.js*" -o -name "*.txt" \) \
  -exec sh -c 'echo "$0"' {} \;

Or:

find . -type f \( -name "*.htm*" -o -name "*.js*" -o -name "*.txt" \) -exec sh -c '
   for i do
     echo "$i"
   done' sh {} +

To avoid running one sh per file.

It looks like you want to avoid looking for files in *cache* directories more than finding files with *pillar* and not *cache* in their name. Then, just tell find not to bother descending into *cache* directories:

find . -iname '*cache*' -prune -o -iname '*pillar*' -print

Or with zsh -o extendedglob:

ls -ld -- (#i)(^*cache*/)#*pillar*

(not strictly equivalent as that would report a foo/pillar-cache file)

Or (less efficient as it descends the whole tree like in @apaul's solution):

ls -ld -- (#i)**/*pillar*~*cache*

Details on the zsh specific globs:

• (#i): turn on case insensitive matching
• ^: negation glob operator
• (...): grouping (like @(...) in ksh).
• <something>#: zero or more of <something> (like * in regexps).
• ~: and-not operator (matches on the whole path)
• **/: 0 or more directory levels (short for (*/)#).

Add the (D) glob qualifier if you want to descend into hidden dires and match hidden files like in the find solution.