How to delete and edit particular line in a file and save it in same file ?

Hi,
I want to delete and edit text at particular line in a file.
But edit and delete should reflect in same file.
I have done googling for this but it results with using another file, that i dont want as i need to save changes in same file.
How can i do this?
Thanks in advance
Edited by: vj_victor on May 24, 2010 3:33 PM

I just want to make sure, this is the only way to do what i mentioned ? or it could be done another way !a) write the data to a new file
b) delete the old file
c) write the data to a newer file
d) delete the new file
e) rename the newer file to the old file name.
For a hint about still more ways to do this, search for the complete lyrics of One man went to mow, Went to mow a meadow...
db

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