Hi,
Is there a way to edit each line in a file, without involving 2 files? Say,
the original file has,
test01
test02
test03
I want to edit it like
test01,a
test02,a
test03,a
Tried something like this, but it replaces some of the characters.
File.open('mytest.csv', 'r+') do |file|
file.each_line do |line|
file.seek(-line.length, IO::SEEK_CUR)
file.puts 'a'
end
end
Writing it to a temporary file and then replace the original file works,
However, I need to edit the file quite often and therefore prefer to do it
within the file itself .Any pointers are appreciated.
Thank you!
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