I have a series of folders /temp/a /temp/b /temp/c

In folders a, b, and c, I have files
a1.txt……….a20.txt
b1.txt……….b40.txt &
c1.txt……….c60.txt

Each file has the same data format :-

Line 1 AAAAA aaaa
Line 2 BBB bbbbbb
Line 3 CCCC cccccc
Etc etc

I need to write a sed script which will go through all the files and reformat the data thus :-

Line 1 AAAAA aaaa
Line 2 BBB
Line 3 X bbbbbb
Line 4 CCCC cccccc
Etc etc

So I need to insert a CR/LF in line 2 position 4,
create a new Line 3 with a constant text (X) and the value of what was to the right of the previous Line 2 (bbbbbb)
and move the remaining lines one line down.

Can anyone help please ?

Sorry i read only second part and you can do the second part with


awk '{if (NR == 2) { $1=$1"\n"; $2="WHATEVER "$2;} print }' FILE_NAME

The only problem i see with this is, it will add extra space before third line. If if doesnt matter for you then you can live with this.

Please read our rules and refrain from cross-posting. I'll close this thread and leave this one open.

Thanks
ZB