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underscore to dots

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# 1  
Old 10-11-2012
underscore to dots
Hi,
I have been trying to change underscores to dots.
For example:
Code:
1122_91     1022_233         .
2237_23     9382_2339    2998_234
345_257      .       .

Desired output:
Code:
1122.91     1022.233         .
2237.23     9382.2339    2998.234
345.257      .       .

Any idea?
Thanks
Last edited by Scrutinizer; 10-12-2012 at 01:32 AM.. Reason: code tags
# 2  
Old 10-11-2012
In a file
Code:
tr -s '_' '.' < underscores.txt > dots.txt

In a variable:
Code:
newvar=$(echo "$old_var" | tr -s  '_'  '.')

# 3  
Old 10-11-2012
Thanks, I was just reading about the use of tr and -s but didn't know it was this straight forward. You are just too good. Thanks a lot.

---------- Post updated at 08:35 PM ---------- Previous update was at 07:58 PM ----------

But its not changing the underscore
# 4  
Old 10-11-2012
also:

Code:
sed 's/_/./g' underscores.txt > dots.txt

# 5  
Old 10-11-2012
The tr worked. Thanks
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