Sed: how to merge two lines moving matched pattern to end of previous line

Shell Programming and Scripting
1

hello everyone,
im new here, and also programming with awk, sed and grep commands on linux.
In my text i have many lines with this config:

1  1  4  3  1  1  2  5
2  2  1  1  1  3  1  2
1  3  1  1  1  2  2  2
            5  2  4  1
3  2  1  1  4  1  2  1
1  1  3  2  1  1  5  4
1  3  1  1  1  3  3  1
            1  2  2  5
1  2  3  1  5  4  1  1

I wanna move the numbres (separated by 2 spaces) in a line after 12 consecutive spaces to the end of the previous line, resulting in the following:

1  1  4  3  1  1  2  5
2  2  1  1  1  3  1  2
1  3  1  1  1  2  2  2  5  2  4  1
3  2  1  1  4  1  2  1
1  1  3  2  1  1  5  4
1  3  1  1  1  3  3  1  1  2  2  5
1  2  3  1  5  4  1  1

Can you please help?

Thanks in advance for your help!

Julien

2

Here's a pe(a)rl :wink:

perl -lne 'chomp;if($.==1){$p=$_;next}; if($_=~/^\s+(.*)$/){$p = $p." ".$1}else{print $p; $p=$_} END{print $p}' file
1 Like
3

It works! many thanks

4

The thread title asks for a sed solution. Here is one:

sed '
/^    /{H;x;s/\n    */  /;$p;x;d;}
x
1d
${p;x;}
' file
1 Like