Change directory structure and between-script path references.

[config] / all_new_2018 / setup_scripts / hardlink_etc.sh

diff --git a/all_new_2018/setup_scripts/hardlink_etc.sh b/all_new_2018/setup_scripts/hardlink_etc.sh
new file mode 100755 (executable)
index 0000000..d6f2987
--- /dev/null
+++ b/all_new_2018/setup_scripts/hardlink_etc.sh
@@ -0,0 +1,24 @@
+#!/bin/sh
+# Hard link files to those in argument-selected subdirectories of
+# linkable_etc_files//, e.g. link /etc/foo/bar to
+# linkable_etc_files/$1/etc/foo/bar and so on. Create directories as
+# necessary. We do the hard linking so files that should be readable to
+# non-root in /etc/ remain so despite having a path below /root/, as
+# symbolic links point into /root/ without making the targets readable
+# to non-root.
+# CAUTION: This removes original files at the affected paths.
+set -e
+
+config_tree_prefix="${HOME}/config/all_new_2018/linkable_etc_files"
+linkable_files_dir="${config_tree_prefix}/linkable_etc_files"
+
+for target in "$@"; do
+    cd "${linkable_files_dir}/${target}"
+    for path in $(find . -type f); do
+        linking=$(echo "${path}" | cut -c2-)
+        linked=$(realpath "${path}")
+        dir=$(dirname "${linking}")
+        mkdir -p "${dir}"
+        ln -f "${linked}" "${linking}"
+    done
+done