Pádraig Brady <p...@draigbrady.com> writes: > On 24/12/2020 06:01, Alex Henrie wrote:
>> It is very useful to be able to read a file as root and then process >> it as an ordinary user, for example: >> sudo cat protected.txt | grep foo >> However, there is currently no exact equivalent for the opposite: >> Generating text as a normal user and writing it to a file as >> root. `tee` is commonly used for this purpose: >> echo foo | sudo tee protected.txt >> The downside is that tee always prints to standard output in addition >> to writing to the file. This can be avoided with piping, but it makes >> the command quite cumbersome: >> echo foo | sudo tee protected.txt > /dev/null Why not echo foo | sudo sh -c "exec cat > protected.txt" or echo foo | sudo dd of=protected.txt status=none >> I propose adding a -q/--quiet flag to `tee` which causes it to only >> write to the specified files and not to stdout. This would allow the >> following convenient command to be used for writing to a protected >> file: echo foo | sudo tee -q protected.txt >> This would be a GNU extension. Happy holidays! If something is really needed, I would suggest an option to "cat" rather than "tee": echo foo | sudo cat --output=protected.txt echo foo | sudo cat -oprotected.txt -- Fabrice BAUZAC-STEHLY PGP 015AE9B25DCB0511D200A75DE5674DEA514C891D
