Improve find commands

It's more straightforward to use quotes around the pattern arguments
rather than escaping the asterisks with backslashes.

Also, find (the GNU version, at least) requires the path to come before
the expression.

README.md

@@ -59,7 +59,7 @@ Scope:
 
 - Use `xargs` (or `parallel`). It's very powerful. Note you can control how many items execute per line (`-L`) as well as parallelism (`-P`). If you're not sure if it'll do the right thing, use `xargs echo` first. Also, `-I{}` is handy. Examples:
 ```
-      find . -name \*.py | xargs grep some_function
+      find . -name '*.py' | xargs grep some_function
       cat hosts | xargs -I{} ssh root@{} hostname
 ```
 
@@ -123,7 +123,7 @@ Scope:
 
 ## Processing files and data
 
-- To locate a file by name in the current directory, `find -iname *something* .` (or similar). To find a file anywhere by name, use `locate something` (but bear in mind `updatedb` my not have indexed recently created files).
+- To locate a file by name in the current directory, `find . -iname '*something*'` (or similar). To find a file anywhere by name, use `locate something` (but bear in mind `updatedb` my not have indexed recently created files).
 
 - For general searching through source or data files (more advanced than `grep -r`), use [`ag`](https://github.com/ggreer/the_silver_searcher).
 
@@ -240,7 +240,7 @@ A few examples of piecing together commands:
 
 - Use `xargs` or `parallel` whenever you can. Note you can control how many items execute per line (`-L`) as well as parallelism (`-P`). If you're not sure if it'll do the right thing, use xargs echo first. Also, `-I{}` is handy. Examples:
 ```
-      find . -name \*.py | xargs grep some_function
+      find . -name '*.py' | xargs grep some_function
       cat hosts | xargs -I{} ssh root@{} hostname
 ```