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removing last character

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# 1  
Old 08-04-2011
removing last character
Hi,

I have a file that has data something like below:

A
B
C
D
.....
......
.....and so on

I am trying to bring it in one line with comma delimited something like below :

A,B,C,D

I tried the something below in the code section:

Code:
cat File.txt | tr '\n' ','

but getting a comma at the line something like below, which I don't want:

A,B,C,D, --> I don't want comma at the end of the line.
rkumar28
# 2  
Old 08-04-2011
Try this:

Code:
paste -sd, infile

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