From b3e5eaf11d1d67c97d96a3d677830e407d0de63f Mon Sep 17 00:00:00 2001
From: Akemi Izuko <akemi@noway.moe>
Date: Sat, 23 Dec 2023 20:14:10 -0700
Subject: [PATCH] New: bash history backup systemd.units

---
 systemd/system/bash_eternal_backup.service    |  9 +++++++
 systemd/system/bash_eternal_backup.timer      | 11 ++++++++
 .../template.bash_eternal_backup.sh           | 27 +++++++++++++++++++
 3 files changed, 47 insertions(+)
 create mode 100644 systemd/system/bash_eternal_backup.service
 create mode 100644 systemd/system/bash_eternal_backup.timer
 create mode 100755 systemd/system/timer-scripts/template.bash_eternal_backup.sh

diff --git a/systemd/system/bash_eternal_backup.service b/systemd/system/bash_eternal_backup.service
new file mode 100644
index 0000000..84d3aa8
--- /dev/null
+++ b/systemd/system/bash_eternal_backup.service
@@ -0,0 +1,9 @@
+[Unit]
+Description=Backing up bash history
+Wants=bash_eternal_backup.timer
+
+[Service]
+User=root
+Group=root
+Type=oneshot
+ExecStart=/usr/local/bin/bash_eternal_backup.sh
diff --git a/systemd/system/bash_eternal_backup.timer b/systemd/system/bash_eternal_backup.timer
new file mode 100644
index 0000000..6b31a28
--- /dev/null
+++ b/systemd/system/bash_eternal_backup.timer
@@ -0,0 +1,11 @@
+[Unit]
+Description=Backing up bash history
+Requires=bash_eternal_backup.service
+
+[Timer]
+Unit=bash_eternal_backup.service
+OnCalendar=*-*-* *:00/3
+RandomizedDelaySec=3min
+
+[Install]
+WantedBy=timers.target
diff --git a/systemd/system/timer-scripts/template.bash_eternal_backup.sh b/systemd/system/timer-scripts/template.bash_eternal_backup.sh
new file mode 100755
index 0000000..ab4b4ff
--- /dev/null
+++ b/systemd/system/timer-scripts/template.bash_eternal_backup.sh
@@ -0,0 +1,27 @@
+#!/usr/bin/env bash
+# Backup the .bash_eternal_history file of select users. Files should all be
+# named in the format
+#
+# ${hostname}_${user}_bash_hist
+
+declare -r backup_p=/home/emiliko/safe/bash_eternal_backups
+declare -r backup_user=emiliko
+
+mkdir -p "$backup_p"
+
+declare -ar backups=(\
+ /home/emiliko/.bash_eternal_history
+   "${backup_p}/mirrorside_emiliko_bash_hist"
+ /root/.bash_eternal_history
+   "${backup_p}/mirrorside_root_bash_hist"
+)
+
+for ((i = 0; i < ${#backups[@]}; i += 2)); do
+  declare from="${backups[i]}"
+  declare to="${backups[i+1]}"
+
+  rsync "$from" "$to"
+  chmod 400 "$to"
+  chown "$backup_user" "$to"
+  chgrp "$backup_user" "$to"
+done