dataport: bash: combine tmux-auto-attach and keychain into one function

.bash_extra

@@ -12,18 +12,26 @@ source "${HOME}/dotfiles/.bash_ps1"
 # add my scripts to PATH
 PATH=$PATH:"${HOME}/dotfiles/scripts"
 
+## check interactive shell https://unix.stackexchange.com/questions/26676/how-to-check-if-a-shell-is-login-interactive-batch
+if [[ $- == *i* ]] ; then
+  ### git-bash
+  if [ "$HOSTNAME" = lzeorpt001 ]; then
+    source /usr/share/git-core/contrib/completion/git-prompt.sh
+  fi
+  ### root alias
+  alias root='sudo -H -u root /usr/bin/sudo2uls'
   ### tmux auto attach
-# Check if the user ID is not 0 (root)
-if [ "$EUID" -ne 0 ]; then
-  # then auto attach
   if command -v tmux &> /dev/null && [ -z "$TMUX" ]; then
     tmux attach -t default || tmux new -s default
   fi
-fi
-
   ### keychain
-eval "$(keychain -q --eval --timeout 60 --agents ssh,gpg)"
+  if [ "$HOSTNAME" = lzeorpt001 ]; then
     export GPG_TTY=$(tty)
+  fi
+  if [ "$(hostname -s)" == "lzeorpt001" ] || [ "$(hostname -s)" == "lbdlspa001" ]; then
+    eval $(keychain -q --eval --timeout 60 --agents ssh,gpg)
+  fi
+fi
 
 ### Praktische Dinge
 # Deaktiviere FlowControl