How to gunzip without overwriting non-interactively
bash, gunzip
Solution
Granting your files have `.gz` extensions, you can check if the file exists before running `gunzip`:
[[ -e ${file%.gz} ]] || gunzip "${file}"
[[ -e `${file%.gz}` ]] removes `.gz` and checks if a file having its name exists. If not (false), `||` would run `gunzip "${file}"`.
Problem
I want to unzip `.gz` files but without overwriting. When the resulting file exists, gunzip will ask for permission to overwrite, but I want gunzip not to overwrite by default and just abort. I read in a man that `-f` force overwriting, but I haven't found nothing about skipping it. ``` gunzip ${file} ``` I need something like `-n` in copying `cp -n ${file}`