diff --git a/colour-changelog b/colour-changelog
index 92e6233..55bf4b4 100755
--- a/colour-changelog
+++ b/colour-changelog
@@ -11,7 +11,7 @@
 # Defaults.
 CHANGELOG_URL="https://ftp.osuosl.org/pub/slackware/slackware64-current/ChangeLog.txt"
 # CHANGELOG_URL="https://slackware.uk/slackware/slackware64-current/ChangeLog.txt"
-REFRESH_INTERVAL="600"
+REFRESH_INTERVAL="300"
 MAX_LINES="10000000"		# Should cover the whole ChangeLog.
 
 # Colourise at most MAX_LINES of the ChangeLog.
diff --git a/cronjob-clean-php b/cronjob-clean-php
index b47cc39..40010a6 100755
--- a/cronjob-clean-php
+++ b/cronjob-clean-php
@@ -1,4 +1,5 @@
 #!/bin/bash
+# Clean up the php session and upload directories.
 
 [[ -d /var/lib/php/sessions ]] && find /var/lib/php/sessions -mmin +1440 -type f -print0 | xargs -0 rm -f
 [[ -d /var/tmp/php-uploads ]] && find /var/tmp/php-uploads -mmin +1440 -type f -print0 | xargs -0 rm -f
diff --git a/cronjob-dehydrated b/cronjob-dehydrated
index 7afa21c..482fc92 100755
--- a/cronjob-dehydrated
+++ b/cronjob-dehydrated
@@ -1,5 +1,6 @@
 #!/bin/bash
-# Run this job in the background.
+# Run dehydrated after a delay.
+
 ( # Delay the run for 15 hours (from midnight) and then run at a random time within 3 hours after that.
   sleep $(( 54000 + (RANDOM % 10800) ))
   /opt/sbin/dehydrated -c >/dev/null ) &
diff --git a/cronjob-fix-log-acls b/cronjob-fix-log-acls
index 4313f92..61d2a90 100755
--- a/cronjob-fix-log-acls
+++ b/cronjob-fix-log-acls
@@ -1,4 +1,5 @@
 #!/bin/bash
+# Set ACLs on /var/log files and directories.
 
 # Sleep for up to a couple of minutes to prevent a race condition with other cron jobs.
 sleep $(( RANDOM % 120 ))
diff --git a/cronjob-rotate-logs-today-symlink b/cronjob-rotate-logs-today-symlink
index f59a139..cd54374 100755
--- a/cronjob-rotate-logs-today-symlink
+++ b/cronjob-rotate-logs-today-symlink
@@ -1,4 +1,5 @@
 #!/bin/bash
+# Create a new symlink to today's logs, for ease of browsing.
 
 # Default configuration.
 LOGS_DIR="/data/logs"
@@ -10,23 +11,28 @@ LOGS_DIR="/data/logs"
   for DIR in "$LOGS_DIR"/*/; do
     cd "$DIR" 2>/dev/null || {
       printf "%s: %s\\n" "${0##*/}" "failed to change directory to '$DIR'" >&2
+      ERR=1
       continue
     }
 
+    # Logs are for root only.
+    umask 022
+
     # Create the new days' location.
-    umask 0755
     # shellcheck disable=SC2174
     mkdir -p -m 0755 "$LOGS_DIR/$TODAY" 2>/dev/null || {
       printf "%s: %s\\n" "${0##*/}" "failed to create directory '$LOGS_DIR/$TODAY'" >&2
+      ERR=1
       continue
     }
 
     # Create the 'today' symlink to the new location.
     ln -sfn "$TODAY" "today" 2>/dev/null || {
       printf "%s: %s\\n" "${0##*/}" "updating 'today' symlink failed in '$DIR'" >&2
+      ERR=1
       continue
     }
   done
 }
 
-exit 0
+exit "${ERR:-0}"
diff --git a/cronjob-update-mirrors-search-db b/cronjob-update-mirrors-search-db
index 9ade33a..b44a3e2 100755
--- a/cronjob-update-mirrors-search-db
+++ b/cronjob-update-mirrors-search-db
@@ -1,16 +1,21 @@
 #!/bin/bash
+# Update the 'locate' database used for the search backend on slackware.uk.
+
+# Default configuration.
+SCANDIR="/data/depository"
+DBFILE="/data/sites/slackware.uk/files/search.db"
 
 RAND="$$$RANDOM"
 
-if ionice -c3 nice -n 19 /opt/bin/updatedb -l no -o /data/sites/slackware.uk/files/search.db.$RAND -U /data/depository >/dev/null 2>&1; then
-  mv /data/sites/slackware.uk/files/search.db.$RAND /data/sites/slackware.uk/files/search.db 2>/dev/null || {
+if ionice -c3 nice -n 19 /opt/bin/updatedb -l no -o "$DBFILE.$RAND" -U "$SCANDIR" >/dev/null 2>&1; then
+  mv "$DBFILE.$RAND" "$DBFILE" 2>/dev/null || {
     printf "%s: %s\\n" "${0##*/}" "failed to move mirrors search database into place" >&2
-    rm -f /data/sites/slackware.uk/files/search.db.$RAND
+    rm -f "$DBFILE.$RAND"
     exit 1
   }
 else
   printf "%s: %s\\n" "${0##*/}" "mirrors search database update failed" >&2
-  rm -f "/data/sites/slackware.uk/files/search.db.$RAND"
+  rm -f "$DBFILE.$RAND"
   exit 1
 fi
 
diff --git a/cronjob-update-packages-list b/cronjob-update-packages-list
index 203c69a..9a63b92 100755
--- a/cronjob-update-packages-list
+++ b/cronjob-update-packages-list
@@ -1,4 +1,5 @@
 #!/bin/bash
+# Update the /etc/pkglist file, the record of installed packages on the system.
 
 # Check for an /etc/os-release.
 [[ ! -e /etc/os-release ]] && {
diff --git a/cronjob-update-packages-list.new b/cronjob-update-packages-list.new
deleted file mode 100644
index 5503f68..0000000
--- a/cronjob-update-packages-list.new
+++ /dev/null
@@ -1,55 +0,0 @@
-#!/bin/bash
-
-# FIXME: This is broken.
-
-# Check for an /etc/os-release.
-[[ ! -e /etc/os-release ]] && {
-  printf "%s: %s\\n" "${BASH_SOURCE[0]}" "No /etc/os-release to determine system." >&2
-  exit 1
-}
-
-# Source system info.
-# shellcheck disable=SC1091
-. /etc/os-release
-
-PKGLIST_CUR_MD5="$(md5sum /etc/pkglist 2>/dev/null)"
-TEMPLATE_CUR_MD5="$(md5sum /etc/slackpkg/templates/$(hostname --short).template 2>/dev/null)"
-
-# Create package list depending on system type.
-case "$ID" in
-  'alpine')
-    apk list -I | cut -d' ' -f1 | rev | cut -d- -f3- | rev >/etc/pkglist || exit 1
-    ;;
-  'debian'|'devuan'|'ubuntu')
-    dpkg-query --show --showformat='${Package}\n' >/etc/pkglist || exit 1
-    ;;
-  'slackware')
-    [[ -L /etc/pkglist ]] && rm -f /etc/pkglist
-    printf "%s\\n" /var/log/packages/* | rev | cut -d- -f4- | rev >/etc/pkglist || exit 1
-    slackpkg -batch=on -default_answer=y generate-template "$(hostname --short)" >/dev/null || exit 1
-    ;;
-  'void')
-    xbps-query -l | awk '{ print $2 }' | rev | cut -d- -f2- | rev >/etc/pkglist || exit 1
-    ;;
-  *)
-    printf "%s: %s\\n" "${BASH_SOURCE[0]}" "Unsupported system." >&2
-    exit 1
-    ;;
-esac
-
-cd /etc || exot 1
-git rev-parse --show-toplevel >/dev/null 2>&1 && {
-  [[ -z "$PKGLIST_CUR_MD5" ]] && [[ -e pkglist ]] && {
-    git add pkglist >/dev/null || exit 1
-  }
-  [[ -z "$TEMPLATE_CUR_MD5" ]] && [[ -e "slackpkg/templates/$(hostname --short).template" ]] && {
-    git add "slackpkg/templates/$(hostname --short).template" >/dev/null || exit 1
-  }
-  { [[ -e pkglist ]] && [[ "$(md5sum pkglist 2>/dev/null)" != "$PKGLIST_CUR_MD5" ]]; } || \
-      { [[ -e "slackpkg/templates/$(hostname --short).template" ]] && \
-      [[ "$(md5sum "slackpkg/templates/$(hostname --short).template" 2>/dev/null)" != "$TEMPLATE_CUR_MD5" ]]; } && {
-    git commit -m "Update pkglist (and/or." pkglist >/dev/null || exit 1
-  }
-}
-
-exit 0
diff --git a/cronjob-updatedb-mirrors b/cronjob-updatedb-mirrors
deleted file mode 100755
index f4ea9a3..0000000
--- a/cronjob-updatedb-mirrors
+++ /dev/null
@@ -1,26 +0,0 @@
-#!/bin/bash
-# Version: 0.1.0
-# Copyright (c) 2023:
-#   Darren 'Tadgy' Austin <darren (at) afterdark.org.uk>
-# Licensed under the terms of the GNU General Public License version 3.
-#
-# Update the locate database used specifically for the search interface on slackware.uk.
-
-# Configuration.
-DBFILE="/run/mirrors.db"
-FILETREE="/storage/md0"
-COMMAND="/usr/bin/updatedb"
-
-# Sanity check.
-[[ ! -x "$COMMAND" ]] && {
-  printf "%s: '%s' %s\\n" "${0##*/}" "$COMMAND" "is not executable" >&2
-  exit 1
-}
-
-# Update the database.
-nice -n 19 ionice -c3 "$COMMAND" -l 0 -o "$DBFILE" -U "$FILETREE" || {
-  printf "%s: %s\\n" "${0##*/}" "failed to update locate database" >&2
-  exit 1
-}
-
-exit 0
diff --git a/cronjob-warn-git-status b/cronjob-warn-git-status
index c4dd959..3a07040 100755
--- a/cronjob-warn-git-status
+++ b/cronjob-warn-git-status
@@ -1,6 +1,8 @@
 #!/bin/bash
+# Email the status of various git repositories on the system.
 
-# Configuration.
+# Default configuration.
+# This can be overridden in /etc/default/warn-git-status.
 EMAIL_FROM="\"Server: ${HOSTNAME%%.*}\" <noreply@slackware.uk.net>"
 EMAIL_TO=("Systems' Administrator <sysadmin@slackware.uk>")
 
diff --git a/cronjob-warn-smtp-queue b/cronjob-warn-smtp-queue
index f551661..859f2e8 100755
--- a/cronjob-warn-smtp-queue
+++ b/cronjob-warn-smtp-queue
@@ -1,6 +1,8 @@
 #!/bin/bash
+# Send an email with the status of the SMTP queue on the system.
 
 # Default configuration.
+# This can be overridden in /etc/default/warn-smtp-queue.
 EMAIL_TO=('sysadmin@slackware.uk')
 EMAIL_FROM="\"Server: ${HOSTNAME%%.*}\" <noreply@slackware.uk>"
 
@@ -24,23 +26,13 @@ hash mailq 2>/dev/null && {
   [[ -z "$TMP_OUTPUT" ]] && exit 0
 
   # Send the message.
-  if [[ -n "${EMAIL_TO[*]}" ]]; then
-    if hash mailx >/dev/null 2>&1; then
-      mailx -S "from=$EMAIL_FROM" -s "Mail queue" "${EMAIL_TO[@]}" <<<"$TMP_OUTPUT" 2>/dev/null || {
-        printf "%s: %s\\n" "${0##*/}" "mailx command failed" >&2
-        exit 1
-      }
-    elif hash mail >/dev/null 2>&1; then
-      mail -r "$EMAIL_FROM" -s "Mail queue" "${EMAIL_TO[@]}" <<<"$TMP_OUTPUT" 2>/dev/null || {
-        printf "%s: %s\\n" "${0##*/}" "mail command failed" >&2
-        exit 1
-      }
-    else
-      printf "%s: %s\\n" "${0##*/}" "no mailer command found" >&2
+  if [[ -n "$EMAIL_FROM" ]] && [[ -n "${EMAIL_TO[*]}" ]]; then
+    mail -r "$EMAIL_FROM" -s "Mail queue" "${EMAIL_TO[@]}" <<<"$TMP_OUTPUT" >/dev/null 2>&1 || {
+      printf "%s: %s\\n" "${0##*/}" "mail command failed" >&2
       exit 1
-    fi
+    }
   else
-    printf "%s: %s\\n" "${0##*/}" "no recipient configured for mail delivery" >&2
+    printf "%s: %s\\n" "${0##*/}" "no sender and/or recipient configured for mail delivery" >&2
     exit 1
   fi
 }
diff --git a/do-backup b/do-backup
index 0a8e35f..d0c8816 100755
--- a/do-backup
+++ b/do-backup
@@ -1,9 +1,4 @@
 #!/bin/bash
-# Version: 0.1.1
-# Copyright (c) 2023:
-#   Darren 'Tadgy' Austin <darren (at) afterdark.org.uk>
-# Licensed under the terms of the GNU General Public License version 3.
-#
 # Perform backup tasks in a generic way.
 
 # Base configuration.
diff --git a/dovecot-service-checksuspended b/dovecot-service-checksuspended
index 2af1775..da11b7e 100755
--- a/dovecot-service-checksuspended
+++ b/dovecot-service-checksuspended
@@ -1,9 +1,4 @@
 #!/bin/bash
-# Version: 0.1.0
-# Copyright (c) 2023:
-#   Darren 'Tadgy' Austin <darren (at) afterdark.org.uk>
-# Licensed under the terms of the GNU General Public License version 3.
-#
 # A Dovecot service script to check whether a domain or user has been suspended from being able to use mail.
 
 VIRTUAL_DIR="/etc/virtual"
diff --git a/firewall-initscript b/firewall-initscript
index 25ee3cd..f19c2f1 100755
--- a/firewall-initscript
+++ b/firewall-initscript
@@ -1,4 +1,5 @@
 #!/bin/bash
+# Restore firewall state at boot, and store it at shutdown.
 ### BEGIN INIT INFO
 # Provides:          firewall
 # Required-Start:    $network
diff --git a/git-auto-merge b/git-auto-merge
index b993bf9..a2bac87 100755
--- a/git-auto-merge
+++ b/git-auto-merge
@@ -1,9 +1,4 @@
 #!/bin/bash
-# Version: 0.1.0
-# Copyright (c) 2023:
-#   Darren 'Tadgy' Austin <darren (at) afterdark.org.uk>
-# Licensed under the terms of the GNU General Public License version 3.
-#
 # Automatically fetch and merge (if possible) upstream changes into a local git repository.
 
 # What platform we're running on.
diff --git a/mirror b/mirror
index 965c594..a2cafd7 100755
--- a/mirror
+++ b/mirror
@@ -1,4 +1,5 @@
 #!/bin/bash
+# Perform mirroring tasks for slackware.uk.
 # Version: 0.4.0
 # Copyright (c) 2026:
 #   Darren 'Tadgy' Austin <darren (at) afterdark.org.uk>
diff --git a/mirror-new-slackware-release.gpg b/mirror-new-slackware-release.gpg
index 992a9f4..4fda3fd 100644
Binary files a/mirror-new-slackware-release.gpg and b/mirror-new-slackware-release.gpg differ
diff --git a/mirror-wrapper b/mirror-wrapper
index d9de8a5..812479e 100755
--- a/mirror-wrapper
+++ b/mirror-wrapper
@@ -1,9 +1,4 @@
 #!/bin/bash
-# Version: 0.2.1
-# Copyright (c) 2023-2026:
-#   Darren 'Tadgy' Austin <darren (at) afterdark.org.uk>
-# Licensed under the terms of the GNU General Public License version 3.
-#
 # Wrapper around /opt/bin/mirror to keep a log of the mirroring session, and email it.
 
 # Configuration.
diff --git a/notify-rsync-upload b/notify-rsync-upload
new file mode 100755
index 0000000..d271c41
--- /dev/null
+++ b/notify-rsync-upload
@@ -0,0 +1,48 @@
+#!/bin/bash
+# Send an email notification whenever someone pushes an update to rsyncd.
+
+# Default configuration.
+# This can be overridden in /etc/default/notify-rsync-upload.
+EMAIL_FROM="\"Server: ${HOSTNAME%%.*}\" <noreply@slackware.uk.net>"
+EMAIL_TO=("Systems' Administrator <sysadmin@slackware.uk>")
+LOGSDIR="/var/log/duplication/rsync-uploads"
+
+# Read /etc/default/notify-rsync-upload if it exists.
+[[ -e /etc/default/notify-rsync-upload ]] && {
+  # shellcheck disable=SC1091
+  source /etc/default/notify-rsync-upload || {
+    printf "%s: %s\\n" "${0##*/}" "failed reading /etc/default/notify-rsync-upload" >&2
+    exit 1
+  }
+}
+
+# Make sure the logs directory exists.
+mkdir -p "$LOGSDIR" 2>/dev/null || {
+  printf "%s: %s\\n" "${0##*/}" "Failed to create logs directory" >&2
+  exit 1
+}
+
+# Update the log with this upload date/time.
+printf "%s - %s\\n" "$(printf "%(%c)T")" "{RSYNC_USER_NAME:-(none)}@${RSYNC_HOST_NAME:-$RSYNC_HOST_ADDR}" >>"$LOGSDIR/${RSYNC_MODULE_NAME%%-upload}"
+
+# Determine the subject of the message.
+if (( RSYNC_EXIT_STATUS == 0 )); then
+  EMAIL_SUBJECT="Upload success: ${RSYNC_MODULE_NAME%%-upload}"
+elif (( RSYNC_EXIT_STATUS == -1 )); then
+  EMAIL_SUBJECT="Upload error: ${RSYNC_MODULE_NAME%%-upload}"
+else
+  EMAIL_SUBJECT="Upload failure: ${RSYNC_MODULE_NAME%%-upload}"
+fi
+
+# Send the message.
+if [[ -n "$EMAIL_FROM" ]] && (( "${#EMAIL_TO[@]}" != 0 )); then
+  printf "%s:\\t%s\\n%s:\\t\\t%s\\n%s:\\t%s\\n%s:\\t\\t%s\\n" "Auth'd user" "$RSYNC_USER_NAME@$RSYNC_HOST_NAME [$RSYNC_HOST_ADDR]" "Module" "$RSYNC_MODULE_NAME ($RSYNC_MODULE_PATH)" "Exit code" "$RSYNC_EXIT_STATUS" "PID" "$RSYNC_PID" | mail -r "$EMAIL_FROM" -s "$EMAIL_SUBJECT" "${EMAIL_TO[@]}" >/dev/null 2>&1 || {
+    printf "%s: %s\\n" "${0##*/}" "mail command failed" >&2
+    exit 1
+  }
+else
+  printf "%s: %s\\n" "${0##*/}" "no sender and/or recipient configured for mail delivery" >&2
+  exit 1
+fi
+
+exit 0
diff --git a/rsync-notify-upload b/rsync-notify-upload
deleted file mode 100755
index 31c536f..0000000
--- a/rsync-notify-upload
+++ /dev/null
@@ -1,51 +0,0 @@
-#!/bin/bash
-# Version: 0.1.0
-# Copyright (c) 2023:
-#   Darren 'Tadgy' Austin <darren (at) afterdark.org.uk>
-# Licensed under the terms of the GNU General Public License version 3.
-#
-# Send an email notification whenever someone pushes an update to rsync.
-# shellcheck disable=SC2154
-
-# Configuration.
-LOGSDIR="/var/log/suplication/rsync-uploads"
-
-# Source the mail configuration.
-source /etc/mail.conf "notify-upload" 2>/dev/null || {
-  printf "%s: %s\\n" "${0##*/}" "Failed to source /etc/mail.conf" >&2
-  exit 1
-}
-
-# Make sure the logs directory exists.
-mkdir -p "$LOGSDIR" 2>/dev/null || {
-  printf "%s: %s\\n" "${0##*/}" "Failed to create logs directory" >&2
-  exit 1
-}
-
-# Update the log with this upload date/time.
-printf "%s - %s\\n" "$(date)" "{RSYNC_USER_NAME:-(none)}@${RSYNC_HOST_NAME:-$RSYNC_HOST_ADDR}" >>"$LOGSDIR/${RSYNC_MODULE_NAME%%-upload}"
-
-# Determine the subject of the message.
-if (( RSYNC_EXIT_STATUS == 0 )); then
-  EMAIL_SUBJECT="Upload success: ${RSYNC_MODULE_NAME%%-upload}"
-elif (( RSYNC_EXIT_STATUS == -1 )); then
-  EMAIL_SUBJECT="Upload error: ${RSYNC_MODULE_NAME%%-upload}"
-else
-  EMAIL_SUBJECT="Upload failure: ${RSYNC_MODULE_NAME%%-upload}"
-fi
-
-# Send the message.
-if [[ -n "${EMAIL_TO[*]}" ]]; then
-  mailx "${MAILX_ARGS[@]}" -S "from=$EMAIL_FROM" -s "$EMAIL_SUBJECT" "${EMAIL_TO[@]}" <<-EOF 2>/dev/null || \
-      { printf "%s: %s\\n" "${0##*/}" "mailx command failed" >&2; RET=1; }
-		Auth'd User:	$RSYNC_USER_NAME@$RSYNC_HOST_NAME [$RSYNC_HOST_ADDR]
-		Module:		$RSYNC_MODULE_NAME ($RSYNC_MODULE_PATH)
-		Exit code:	$RSYNC_EXIT_STATUS
-		PID:		$RSYNC_PID
-		EOF
-else
-  printf "%s: %s\\n" "${0##*/}" "no recipient configured for mail delivery" >&2
-  RET=1
-fi
-
-exit "${RET:-0}"
diff --git a/sbosrcarch-wrapper b/sbosrcarch-wrapper
index 55fe5fa..9f16a9d 100755
--- a/sbosrcarch-wrapper
+++ b/sbosrcarch-wrapper
@@ -1,9 +1,4 @@
 #!/bin/bash
-# Version: 0.2.0
-# Copyright (c) 2023-2026:
-#   Darren 'Tadgy' Austin <darren (at) afterdark.org.uk>
-# Licensed under the terms of the GNU General Public License version 3.
-#
 # Wrapper around /opt/bin/sbosrcarch to keep a log of the session, and email it.
 
 # Configuration.