What I want to do is remove the last comma in the file: for example: 
21112,/vol/voly,blx
21113,/vol/eng,blz
21114,/vol/eng,file

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I want the second comma to be gone. It is not at the end of the line.

In reply to Re^2: sed command in perl by novice2015
in thread sed command in perl by novice2015

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