Insert $string to a file

[blueeyedme]

Hiya

I got the following.

I am trying to get a script which inserts a string/line to a file.
Before i do this i want to search for a typical string in this document and insert my string about this line.

I thought this was possible with sed or ? i cant figure it out

 

[Annihilannic]

To insert text in an existing line:

[tt]sed 's/originalstring/newstring/' file > file2
mv file2 file[/tt]

To insert text on a new line after an existing one:

[tt]sed '/originalstring/anewstring' file > file2
mv file2 file[/tt]

Use 'i' instead of 'a' to insert the text on the line before. Annihilannic.

 

[blueeyedme]

Thanks i am going to try this one..

Thankyou

 

[blueeyedme]

i am getting the following error :

ed: -e expression #1, char 7: Extra characters after command

i used it like this

sed -e '/MX/i\mx' test6 > test7

 

[Annihilannic]

You actually need to separate it into two lines like in my example. It's a strange syntax, I know. Annihilannic.

 

[blueeyedme]

same error?

 

[Annihilannic]

Hmm... what UNIX are you using? Works fine on Solaris, Linux and SCO OpenServer, which are all I have access to. Annihilannic.

 

[blueeyedme]

i tried it on unix too.. on solaris and it works there.. but when i try it on debian linux it gives me this error

 

[Annihilannic]

Oh well, a workaround:

[tt]awk '/originalstring/ { print "newstring" }
{ print }' file > file2
mv file2 file[/tt]
Annihilannic.