How to find/remove "^M" in VI editor

[cah]

^ is "CTRL" key.
When one simply press "CRTL+M" together in VI, VI treats it as the "Enter" key. Therefore, one needs to "escape" the control key by using "CTRL+V" in front of the control characters.

Find "^M":

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/^M

You will see "^" when you press "CTRL+V" together. Then, "CTRL+M" will have "M" show up after "^". Then, press "Enter" key to find the "^M" character in the document.

Replace/remove "^M":

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:1,$s/^M//g

1. Type ":1,$s/" first.
2. Type "CTRL+V" and "CTRL+M".
3.Type "/g" and "Enter" key to execute.