Re: [arch-general] How to suppress the list of variables that are output at shell login?

On Mon, Jan 07, 2013 at 05:51:39PM +0530, Jayesh Badwaik wrote:

Hi,

On Mon, Jan 7, 2013 at 5:18 PM, Rodrigo Rivas wrote:

...

You may also add a `echo $profile` command in the /etc/profile file, just after `for profile in /etc/profile.d/*.sh; do` to see the trace of sourced files.

Thanks for the suggestion. I implemented this and got the following output. /etc/profile.d/gpg-agent.sh

No package owns this file. Where did it come from?

declare -x HOME="/root" declare -x LOGNAME="root" declare -x OLDPWD declare -x PATH="/usr/bin:/usr/local/bin:/bin:/usr/local/sbin:/usr/sbin:/sbin" declare -x PWD="/root" declare -x SHELL="/bin/bash" declare -x SHLVL="1" declare -x TERM="xterm" declare -x USER="root" /etc/profile.d/gpm.sh /etc/profile.d/jdk.sh

I guess, this means the gpg-agent.sh is the one outputting all the terms. So, I read the gpg-agent.sh and here is the output for the same: if pgrep -u "${USER}" gpg-agent >/dev/null 2>&1; then eval `cat $gnupginf` eval `cut -d= -f1 $gnupginf | xargs echo export` else eval `gpg-agent --enable-ssh-support --daemon` fi

Ew.

And after commenting lines selectively, the line

eval `cut -d= -f1 $gnupginf | xargs echo export`

seems to be outputting all the variables. I am not sure what this line does exactly. I am guessing that it checks if the gpg daemon is on, and if it is not, it turns it on, and if it is, it lists some environment variables, according to some condition. I am not sure which.

Is my guess correct? In which case, would it be safe to comment the lines?

No, this happens because nothing is passed to xargs, which results in: eval `echo export` Or, simple running 'export'. You'll see that running export without any arguments simply dumps a list of exported variables. I'd suggest removing this file entirely if no package owns it and using something like keychain if you want a singleton ssh-agent for your user.