sed question

[jackrobinson]

Hi I am trying to write a sed one liner which will look for the following line in a file:

action "record-stream" {

and replace the line following the above line (whatever it might be) with:

tab space followed bycommand "x-terminal-emulator -e streamripper %q -d /home/jack/ripped -r -q";

how can I do this?
Thanks in advance.
-Jack

[bradleyd]

this should work,
say there is file call sed.txt, in file is your text from your post.
action "record-stream" { hello
then at propmt type:
cat sed.txt | sed 's/action "record-stream" {/\tcommand "x-terminal-emulator -e streamripper %q -d \/home\/jack\/ripped -r -q";/g'
this produces:

       command "x-terminal-emulator -e streamripper %q -d /home/jack/ripped -r -q"; hello

[jackrobinson]

this should work,
say there is file call sed.txt, in file is your text from your post.
action "record-stream" { hello
then at propmt type:
cat sed.txt | sed 's/action "record-stream" {/\tcommand "x-terminal-emulator -e streamripper %q -d \/home\/jack\/ripped -r -q";/g'
this produces:

       command "x-terminal-emulator -e streamripper %q -d /home/jack/ripped -r -q"; hello

Hi thanks for the reply and help.. but this is not exactly what i wanted.
Let's say we have the following two lines in the file (among many other lines):

action "record-stream" {
command " ";

what i want sed to do is replace

command " ";

with the string I pasted, when it finds

action "record-stream" {

The operative point here is that

command" ";

comes exactly on the next line after

action "record-stream" {

and this is where

command " ";

needs to be replaced.

With your code, it's replacing

action "record-stream" {

and keeping

command " ";

Hence it is appearing as follows:

command "x-terminal-emulator -e streamripper %q -d /home/jack/ripped -r -q";
command " ";

[WW]

If you don't mind perl instead of sed:

perl -i.save -p -0 -e 's/(action "record-stream" {\n)(.*)\n/$1\t command "x-terminal-emulator -e streamripper \%q -d \/home\/jack\/ripped -r -q";\n/g'  filename

This will make the changes in filename. A copy of the original will be saved in filename.save.

[bradleyd]

if you are still interested in sed this should be what you were looking for(as far as I can understand)

 cat sed.txt | sed -e '/action "record-stream" {/ a\  command "x-terminal-emulator -e streamripper %q -d \/home\/jack\/ripped -r -q";/' -e '/command "";/d'

not the most elegant but gets the job done. WW perl's one liner works great too.
B