awk Command to add Carriage Return and Line Feed


 
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# 15  
Old 10-19-2018
I think you mean the post#8 script.
Yes, delete all \r so you get '\n' and two times ""

Now echo and sed (where one had a problem to specify a \r in a portable way) can be used:
Code:
#!/bin/sh
{ cat "${1:-file}"; echo; } | sed '
  $!b
  /^$/d
' > "${2:-newfile}"

# 16  
Old 10-19-2018
Is this correct

Code:
{ cat "${1:-file}"; printf '\n'; } | awk '
{	if(empty)
		print "\n"
	if($0 != "\n") {
		print
		empty = 0
	} else	empty = 1
}' > "${2:-newfile}"

# 17  
Old 10-19-2018
Quote:
Originally Posted by rosebud123
Is this correct

Code:
{ cat "${1:-file}"; printf '\n'; } | awk '
{	if(empty)
		print "\n"
	if($0 != "\n") {
		print
		empty = 0
	} else	empty = 1
}' > "${2:-newfile}"

No. MadeInGermany's suggestion to delete all \r so you get '\n' and two times "" meant exactly what he said... Delete ALL \r means delete all \r; not delete the first \r and change the other two to \n!
Code:
{ cat "${1:-file}"; printf '\n'; } | awk '
{	if(empty)
		print ""
	if($0 != "") {
		print
		empty = 0
	} else	empty = 1
}' > "${2:-newfile}"

Note also that printf '\n'; can be simplified to just be echo; and still get the same results.

But, using the suggestion proposed by apmcd47 would be more efficient:
Code:
printf 'w %s\nq\n' "${2:-newfile}" | ex "${1:-file}"

since we're now creating a UNIX text file instead of a DOS text file.
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