scripts/gather-files new

1 files changed, 32 insertions, 0 deletions

diff --git a/scripts/gather-files b/scripts/gather-files
new file mode 100755
index 0000000..3dfaf14
--- /dev/null
+++ b/scripts/gather-files
@@ -0,0 +1,32 @@
+#!/bin/bash
+
+if [ $# -ne 1 ] && [ $# -ne 2 ]; then
+  >&2 echo 'usage: '"$0"' host'
+  >&2 echo 'usage: '"$0"' host ssh-alias'
+  exit 1
+fi
+
+cd "${0%/*}/.."
+
+rm -rf --one-file-system "hosts/$1"
+mkdir -p "hosts/$1"
+
+ssh "${2:-$1}" -t 'su -c '"'"'
+  cut -d: -f1,6 \
+  </etc/passwd \
+  | tr ":" " " \
+  | while read -r user home; do
+    [ -d "${home}/.ssh" ] \
+    || continue
+    [ -f "${home}/.ssh/authorized_keys" ] \
+    || continue
+    sed "s@^@${user} @" "${home}/.ssh/authorized_keys"
+  done
+'"'" \
+2>/dev/null \
+| tee /dev/stderr \
+| sed 1d \
+| while read user key; do
+  printf '%s\n' "${key}" \
+  >> "hosts/$1/${user}"
+done