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sed insert new line does not update file

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# 1  
Old 05-03-2013
sed insert new line does not update file
Hi all,

I have a file called "text.cpp" with the first line of "1"
afterwards I tried in Ubuntu to type the following

sed '12iasdasdasdasdsad' test.cpp > output.txt

however when I tried to see the result of output.txt

#cat output.txt
1


why is the line 12 is not updated to the new output.txt? Smilie


thank you
# 2  
Old 05-03-2013
Code:
sed '12i\
asdasdasdasdsad' test.cpp > output.txt

you must add a new line after your backslash .
Last edited by mstafreshi; 05-03-2013 at 07:31 AM.. Reason: more description
# 3  
Old 05-03-2013
---------- Post updated at 05:31 AM ---------- Previous update was at 05:30 AM ----------

Quote:
Originally Posted by mstafreshi
Code:
sed '12i\
asdasdasdasdsad' test.cpp > output.txt

still does not update the output.txt .. it consist only "1" even after I removed the old output.txt
# 4  
Old 05-03-2013
What that sed is doing? and what you want to achieve from this?Smilie
# 5  
Old 05-03-2013
Quote:
Originally Posted by vidyadhar85
What that sed is doing? and what you want to achieve from this?Smilie
I have a test.cpp with a "1" on the first line. I want to copy this respective file to other file with additional lines in line 12..
# 6  
Old 05-03-2013
your file has at least 12 lines ?
# 7  
Old 05-03-2013
Ok, I found a similar way
Code:
sed '1i\
> your text goes here' test.cpp > testfile.txt


thank you everyone!Smilie
Last edited by Franklin52; 05-03-2013 at 08:35 AM.. Reason: Code tags
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