regex - Match backed up files (`*~`) -

I'm trying to match backup files in a script and then delete them. Backup files are in those that have a tilde ( ~ ):

  $ ls -al drwxr-xr-x 3 jwalton jwalton 4096 Feb 18 09: 00 Drwxr- Xr-x5 jwalton jwalton 4096 Feb 18 08:54 .. drwxr-xr-x5 flamingo flatten 40 9 Feb. 18 08:54 Test-Prose-RWXR-XR-X1 Jawlton Jubilee 664 February 18 09:00 Clean. My clean script has the following test, but it looks like I am doing something wrong. :  
  What is the correct test match for backed up files?   
 
 
 This is your quote which is scouting it is looking for a file that is literally  * ~ < / Code>. This works, but only when  * ~  extends a file If: 
 
  if [-e * ~]; then rm * ~ fi  
 
 Why? Because shell wildcard  first  Expands so that if it is nothing, its equivalent is: 
 
  if [-e]; then // false positive!  
 
 If this corresponds to a file in the  x.txt ~ , then it spreads: 
 
  if [-e x.txt] ~]; then // OK  
 
 If it matches more than one file, then it matches  x.txt ~ y.txt ~ , then it spreads: 
 
  if [-e x.txt ~ y.txt ~]; So // "[: x.txt ~: binary operator is expected"]  
 
 It is worth knowing that in Unix filenames except  /  and ASCII 0 Can be any letter. You can: 
   $ touch "* ~" $ ls "* ~" * ~ $ rm "* ~"  
 
 and you end With files with weird names such as  -r  
  -  $ touch - -or # or imagine, your own c, java program $ ls -r $ rm - -r  

However, If is not really necessary to prevent such a file or directory errors, and you can press those people: / P>

  rm -f * ~