Substitute a newline character

[grega]

Wracking my brains on this to no avail! How do I substitute a "newline" character into a file? Say I have a comma separated file containing

a,b,c,d

and I want to change it to

a
b
c
d

Specifically interested in sed or the vi substitution string (for which I use :g/find this/s//change to this/g

Thanks in advance.

Greg.

 

[mrregan]

grega,
You already have a newline at the end of each record, so in vi you could type:
1,$s/,/ctrl-vctrl-m/g
the control v indicates the next character is a control character which in this case is control-m (newline).
Hope this helps

 

[MikeLacey]

or (and this is a *typical* vi trick) you could type

%s/,/ctrl-vctrl-m/g

1,$ means "from line 1 to the end of the file" and so does %
Mike
michael.j.lacey@ntlworld.com

 

[grega]

Thanks guys. Great help!

Greg.