Read last word of file name

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# 1  
Old 10-08-2009
Read last word of file name

I am writing a script that needs to read all file from a directory and print only last word of all file names.
My script:

for file in /documents/files/
echo $shortFile

All my file names in /document/files/ directory are like unix_ubuntu but I need to read only second word after underscore i.e., ubuntu only
# 2  
Old 10-08-2009
for file in /documents/files/ 
   echo ${file##*_}

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