Add grml tmux and zsh configs

zsh/grml-config.sh

@@ -0,0 +1,37 @@
+#!/bin/sh
+
+set -e
+
+# IMPORTANT: please note that you might override existing
+# configuration files in the current working directory!
+if command -v wget >/dev/null 2>&1 ; then
+  wget -O .screenrc   https://grml.org/console/screenrc
+  wget -O .tmux.conf  https://grml.org/console/tmux.conf
+  wget -O .vimrc      https://grml.org/console/vimrc
+  wget -O .zshrc      https://grml.org/console/zshrc
+  wget -O .zshenv     https://grml.org/console/zshenv
+  # optional:
+  # wget -O .zshrc.local https://grml.org/console/zshrc.local
+  # wget -O .screenrc_v4   https://grml.org/console/screenrc_v4
+elif command -v curl >/dev/null 2>&1 ; then
+  curl -sSfL -o .screenrc   https://grml.org/console/screenrc
+  curl -sSfL -o .tmux.conf  https://grml.org/console/tmux.conf
+  curl -sSfL -o .vimrc      https://grml.org/console/vimrc
+  curl -sSfL -o .zshrc      https://grml.org/console/zshrc
+  curl -sSfL -o .zshenv     https://grml.org/console/zshenv
+  # optional:
+  # curl -sSfL -o .zshrc.local https://grml.org/console/zshrc.local
+  # curl -sSfL -o .screenrc_v4   https://grml.org/console/screenrc_v4
+elif command -v fetch >/dev/null 2>&1 ; then
+  fetch -o .screenrc   https://grml.org/console/screenrc
+  fetch -o .tmux.conf  https://grml.org/console/tmux.conf
+  fetch -o .vimrc      https://grml.org/console/vimrc
+  fetch -o .zshrc      https://grml.org/console/zshrc
+  fetch -o .zshenv     https://grml.org/console/zshenv
+  # optional:
+  # fetch -o .zshrc.local https://grml.org/console/zshrc.local
+  # fetch -o .screenrc_v4   https://grml.org/console/screenrc_v4
+else
+  echo 'Error: neither wget, curl not fetch  available for retrieving configuration files.' >&2
+  exit 1
+fi