Why sudo cat gives a Permission denied but sudo vim works fine?
bash, cat, echo, shell
Solution
The problem is that the redirection is being processed by your original shell, not by `sudo`. Shells are not capable of reading minds and do not know that that particular `>>` is meant for the `sudo` and not for it.
You need to:
- quote the redirection ( so it is passed on to `sudo)`
- and use `sudo -s` (so that `sudo` uses a shell to process the quoted redirection.)
Problem
I am trying to automate the addition of a repository source in my arch's pacman.conf file but using the `echo` command in my shell script. However, it fails like this:- ``` sudo echo "[archlinuxfr]" >> /etc/pacman.conf sudo echo "Server = http://repo.archlinux.fr/\$arch" >> /etc/pacman.conf sudo echo " " >> /etc/pacman.conf -bash: /etc/pacman.conf: Permission denied ``` If I make changes to /etc/pacman.conf manually using vim, by doing ``` sudo vim /etc/pacman.conf ``` and quiting vim with `:wq`, everything works fine and my pacman.conf has been manually updated without "Permission denied" complaints. Why is this so? And how do I get `sudo echo` to work? (btw, I tried using `sudo cat` too but that failed with Permission denied as well)