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How to remove last character in a string read from file

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# 1  
Old 09-02-2010
How to remove last character in a string read from file
Hello,

The last character is a comma ,

I have tried the following:

Code:
sed -e 's/\,$//' filename-to-read

however - there are still commas at the end of each line...Smilie
# 2  
Old 09-02-2010
Hi.

You don't have to escape the comma (\,) although it seems to make no difference.

The sed code you are using will not write back to the file.

If your sed has the -i option use that, otherwise write to a temporary file, and then copy the new file back over the original.

To remove multiple comma's at the end of a line, use something like:

Code:
sed -e 's/,*$//' file2

Last edited by Scott; 09-02-2010 at 02:03 PM.. Reason: Removed second comma - not required
This User Gave Thanks to Scott For This Post:
learning
# 3  
Old 09-02-2010
Quote:
Originally Posted by learning
Hello,

The last character is a comma ,

I have tried the following:

Code:
sed -e 's/\,$//' filename-to-read

however - there are still commas at the end of each line...Smilie
In the file or on the screen?
# 4  
Old 09-02-2010
Yep - that seems to have worked. Apparently my input has some spaces at the end so i had to execute it twice:

Code:
sed -e 's/ *$//g' file.out > no-space.out
sed -e 's/,*$//g' no-space.out

Thank you!

---------- Post updated at 11:54 AM ---------- Previous update was at 11:52 AM ----------
Quote:
Originally Posted by Franklin52
In the file or on the screen?
Was outputting to file. Ty.
# 5  
Old 09-02-2010
Hi.

You could probably do that in one step.

i.e.
Code:
sed -e 's/[, ]*$//g'

This User Gave Thanks to Scott For This Post:
learning
# 6  
Old 09-03-2010
Quote:
Originally Posted by learning
Yep - that seems to have worked. Apparently my input has some spaces at the end so i had to execute it twice:

Code:
sed -e 's/ *$//g' file.out > no-space.out
sed -e 's/,*$//g' no-space.out

Thank you!

---------- Post updated at 11:54 AM ---------- Previous update was at 11:52 AM ----------



Was outputting to file. Ty.
Read this too.
http://www.grymoire.com/Unix/Sed.html
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