[shell] sed replace to \n

sed is utility to replace particular text with new text in files.

s/// doesn’t work with \n
use y/// for \n replacement

sed 'y/ /\n/g'

Or you can use ‘tr’

$> tr -s '~' '\n' < inputfile > outputfile

[shell] removing ^M : Dos text to unix

tr -d '\015' < inputfile > outputfile

Detecting ^M (\r\n)

Note that “^M” is “Cntrl+V and Enter” Key

#!/bin/sh
 
if grep "^M" $1 > /dev/null
then
   echo $1 contains DOS Carriage Return
fi