Unix concatenate two line if shorter-CodePudding

I have 500k line of fix length data, but in some line there is enter character in between data.

Eg. Each line length is 26 character.

ABCDEFGHIJKLMNOUPQRSTUVWXTZ
ABCDEFGHIJKLM<BR>
NOUPQRSTUVWXYZ
ABCDEFGHIJKLMNOUPQRSTUVWXTZ

Line 2 is having enter character. I Want to remove enter character from line 2 and combine it with line below it. E.g.

ABCDEFGHIJKLMNOUPQRSTUVWXTZ
ABCDEFGHIJKLMNOUPQRSTUVWXYZ
ABCDEFGHIJKLMNOUPQRSTUVWXTZ

I tried to use awk and sed but result is not correct

CodePudding user response：

If you have Perl in your system, you can simply do this.

$ perl -pe 's/<BR>\n//' your_file_name

It is a one-liner. You simply run it at your command line.

Or with awk:

awk '{ORS = sub(/<BR>/,"") ? "" : "\n"; print $0}' your_file_name

CodePudding user response：

This might work for you (GNU sed):

sed 'N;s/<BR>\n//;P;D' file

or:

sed -z 's/<BR>\n//g' file

CodePudding user response：

One, slightly off-the-wall, way of doing this is to:

That looks like this:

tr -d '\n' < YOURFILE | fold -w 27   
ABCDEFGHIJKLMNOUPQRSTUVWXTZ
ABCDEFGHIJKLMNOUPQRSTUVWXYZ
ABCDEFGHIJKLMNOUPQRSTUVWXTZ