The dos file is put on linux and the solution to the ^ M problem is displayed.

Put the dos file on linux and display ^ M solution-general Linux technology-Linux technology and application information. The following is a detailed description. Several methods for removing ^ M
1. cat filename1 | tr-d "\ r"> newfile

2. sed-e "s/^ V ^ M //" filename> outputfilename

3. vi: open a file with vi

1. Press ESC

2. Input: % s/^ M/g

Confirm ^ M is to use "CTRL-V CTRL-M" instead of literally ^ M. This regular expression will replace ^ M before all carriage return characters with null ($ is used to ensure ^ M appears at the end of the row)

4. Some linux versions include the dos2unix program, which can be used to remove ^ M

5. Use vim

Input: set notextmode

Unfortunately, after the above processing, ^ M does not exist, but the line feed fails. Everything is on one line, and it is very difficult to look at it. This indicates that the file is missing "\ n" during processing. You can add it when replacing it:

Cat filename | tr "\ r" "\ n"> newfile