Nano that generated this files, look at this from GNU Nano website:
In some cases nano will try to dump the buffer into an emergency file. This will happen mainly if nano receives a SIGHUP or SIGTERM or runs out of memory. It will write the buffer into a file named nano.save if the buffer didn’t have a name already, or will add a ".save" suffix to the current filename. If an emergency file with that name already exists in the current directory, it will add ".save" plus a number (e.g. ".save.1") to the current filename in order to make it unique. In multibuffer mode, nano will write all the open buffers to their respective emergency files.
Link: http://www.nano-editor.org/dist/v2.2/nano.1.html
Or in your shell:
$ man nano
Did you use some editor to edit the contents of
.bashrc
? The editor might have an automatic backup feature. – karatedog – 2011-12-28T15:36:53.703Yes I used nano to edit .bashrc – Kyrol – 2011-12-28T15:43:01.767