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sed to delete ^M

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# 1  
Old 11-20-2014
sed to delete ^M
I am trying to use sed to delete the ^M at the end of the line and when i pass a file './asciiFix.sh wintest.txt' I get an error saying sed: can't read : no such file or dir. Can someone give me a pointer as to what I am doing wrong?

Code:
#!/bin/sh
if file "$@" | grep "with CRLF"; then
   echo "converting $file"
   sed -i 's/^M//g' $file
fi

# 2  
Old 11-20-2014
$file is never defined.

You may also want to consider the dos2unix (or dos2ux) command instead of your script. It will process a text and leave it alone if it does not have windows carriage control.

How did you write the ^M ? It actually should be ascii 13 not the ^ character and the letter M.
# 3  
Old 11-20-2014
My system does not have dos2unix installed on it and the admin has it to where it cannot be installed. ctrl+v+m is how I got
Code:
^M

. I was thinking of trying
Code:
's/\r$//'

in place to see and it worked on some files, but not all. I have changed it though to where my $file is defined.
# 4  
Old 11-21-2014
If your files happen to have <CR> line terminators, could it be the filenames have it as well?
# 5  
Old 11-21-2014
Like Jim says, your script does not put the filename of the file in the variable file, so $file will be empty.
# 6  
Old 11-21-2014
Have a for loop around it that defines a $file for each parameter
Code:
for file
do
 if file "$file" | grep "with CRLF"; then
  echo "converting $file"
  sed -i 's/^M//g' "$file"
 fi
done

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