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like so
``` -
add language identifier to highlight code
```python
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perl -i(without any extension following-i) will rename the original file to some temporary file, process it into the new file with the original name and then unlink the the (original) temporary file. So no actual "backup" file./etc, see above explanation.sed [...] /etc/myfile > "$HOME"/myfile; cp "$HOME"/myfile /etc/myfile(with added quoting)sed [...] /etc/myfile > "$HOME"/myfile && cp "$HOME"/myfile /etc/myfileso that it only replaces original if there are no errors.