insert blank line at line no.1

[dbase77]

Hi,

Anybody knows how to insert blank line at line number one in a file?

Thanks.

 

[feherke]

Hi

sed -i '1ithe new line' /path/to/file

Feherke.

http://rootshell.be/~feherke/

 

[dbase77]

Hi,

Got error "sed: illegal option -- i".

 

[feherke]

Hi

Needs newer GNU [tt]sed[/tt]. For example 4.1.2.

Feherke.

http://rootshell.be/~feherke/

 

[dbase77]

Dont have newer version. I guess I have to find another way of doing it.

Thanks.

 

[feherke]

Hi

You could search this forum, the question is not new.

Practically all solutions implies the creation of a temporary file. ( [tt]sed[/tt] also does that way. ) So :

(
  echo "the new line"
  cat /the/file
) > /temporary/file
mv /temprary/file /the/file

Another way is to pipe the necessary commands to [tt]vi[/tt] and make it execute them in kind of batch mode. Again, search this forum.

Feherke.

http://rootshell.be/~feherke/

 

[dbase77]

Got solution from sed using below:

sed '1i\
' test > test.out

Thank you for your help. At least give me some idea.

regards,
dbase77

 

[PHV]

Practically all solutions implies the creation of a temporary file
not all:
echo "O\033:wq" | vi /path/to/file >/dev/null 2>&1

Hope This Helps, PH.
Want to get great answers to your Tek-Tips questions? Have a look at FAQ219-2884 or FAQ181-2886

 

[feherke]

Hi

Ok, then...

Practically all solutions implies the creation of a temporary copy, usually in a file.

Anyway, I am not so sure, that [tt]vi[/tt] will not create a temporary file.

Feherke.

http://rootshell.be/~feherke/