Optimize Shutdown, Disable MOTD, Disable Cursor Blink

.gitignore

@@ -1 +1,2 @@
-.DS_Store
+.DS_Store
+tags

raspberrypi/disable_cursor.sh

@@ -0,0 +1,24 @@
+#!/bin/sh
+
+# note: this currently only works for key=value cmdline args
+modify_cmdline() {
+  if echo "${1}" | grep -q '='; then
+    modify_cmdline_key=$(echo "${1}" | cut -d'=' -f1)
+    modify_cmdline_value=$(echo "${1}" | cut -d'=' -f2-)
+  else
+    modify_cmdline_key="${1}"
+    modify_cmdline_value="${2}"
+  fi
+
+  modify_cmdline_cmdline="$(cat /boot/cmdline.txt)"
+
+  if echo "${modify_cmdline_cmdline}" | grep -q -E "\b${modify_cmdline_key}=[^ ]*"; then
+    modify_cmdline_cmdline=$(echo "${modify_cmdline_cmdline}" | sed "s/\b${modify_cmdline_key}=[^ ]*/${modify_cmdline_key}=${modify_cmdline_value}/g")
+  else
+    modify_cmdline_cmdline="${modify_cmdline_cmdline} ${modify_cmdline_key}=${modify_cmdline_value}"
+  fi
+
+  echo "${modify_cmdline_cmdline}" > /boot/cmdline.txt
+}
+
+modify_cmdline "vt.global_cursor_default=0"

raspberrypi/disable_cursor_blink.sh

@@ -0,0 +1,19 @@
+#!/bin/sh
+
+cat <<EOL > "/etc/systemd/system/disable-cursor-blink.service"
+[Unit]
+Description=Disable cursor blink on Linux console
+DefaultDependencies=no
+Before=sysinit.target
+
+[Service]
+Type=oneshot
+ExecStart=/bin/sh -c "echo 0 > /sys/class/graphics/fbcon/cursor_blink"
+
+[Install]
+WantedBy=sysinit.target
+EOL
+
+systemctl daemon-reload
+systemctl enable disable-cursor-blink.service
+systemctl start disable-cursor-blink.service

raspberrypi/disable_kernel_logs.sh

@@ -0,0 +1,34 @@
+#!/bin/sh
+
+modify_conf() {
+  modify_conf_conf_file="$1"
+
+  if echo "${2}" | grep -q '='; then
+    modify_conf_key=$(echo "${2}" | cut -d'=' -f1)
+    modify_conf_value=$(echo "${2}" | cut -d'=' -f2-)
+  else
+    modify_conf_key="${2}"
+    modify_conf_value="${3}"
+  fi
+
+  modify_conf_new_content=""
+  modify_conf_found=0
+
+  if [ -f "${modify_conf_conf_file}" ]; then
+    while IFS= read -r modify_conf_line; do
+      if echo "${modify_conf_line}" | grep -q "^${modify_conf_key}"; then
+        modify_conf_line="${modify_conf_key}=${modify_conf_value}"
+        modify_conf_found=1
+      fi
+      modify_conf_new_content="${modify_conf_new_content}$(printf "%s\n" "${modify_conf_line}")"
+    done < "${modify_conf_conf_file}"
+  fi
+
+  [ "${modify_conf_found}" -eq 0 ] && modify_conf_new_content="${modify_conf_new_content}$(printf '%s=%s\n' "${modify_conf_key}" "${modify_conf_value}")"
+
+  modify_conf_new_content=$(printf "%s" "${modify_conf_new_content}" | sed -e :a -e '/^\n*$/{$d;N;};/\n$/ba')
+
+  printf "%s\n" "${modify_conf_new_content}" > "${modify_conf_conf_file}"
+}
+
+modify_conf "/etc/sysctl.d/20-quiet-printk.conf" "kernel.printk" "-1 -1 -1 -1"

raspberrypi/disable_login_prompt.sh

@@ -0,0 +1,49 @@
+#!/bin/sh
+
+modify_service_conf() {
+  modify_service_conf_file="$1"
+  modify_service_conf_linePrefix="$2"
+  modify_service_conf_subcommand="$3"
+  modify_service_conf_flag="$4"
+
+  modify_service_conf_flag_escaped="$(echo "${modify_service_conf_flag}" | sed -e 's/[\\/&]/\\&/g')"
+  modify_service_conf_linePrefix_escaped="$(echo "${modify_service_conf_linePrefix}" | sed -e 's/[\\/&]/\\&/g')"
+
+  if [ ! -f "${modify_service_conf_file}" ]; then
+    exit 1
+  fi
+
+  modify_service_conf_new_content=""
+  modify_service_conf_found=0
+
+  while IFS= read -r modify_service_conf_line || [ -n "${modify_service_conf_line}" ]; do
+    if echo "${modify_service_conf_line}" | grep -q -e "^${modify_service_conf_linePrefix_escaped}"; then
+      modify_service_conf_found=1
+      #shellcheck disable=2295
+      remaining_line="${modify_service_conf_line#${modify_service_conf_linePrefix} }"
+      case "${modify_service_conf_subcommand}" in
+        add)
+          if ! echo "${remaining_line}" | grep -q -w -e "${modify_service_conf_flag_escaped}"; then
+            modify_service_conf_line="${modify_service_conf_linePrefix} ${modify_service_conf_flag} ${remaining_line}"
+          fi
+          ;;
+        del|delete)
+          remaining_line="$(echo "${remaining_line}" | sed "s/[[:space:]]*${modify_service_conf_flag_escaped}[[:space:]]*/ /g" | awk '{$1=$1};1')"
+          modify_service_conf_line="${modify_service_conf_linePrefix} ${remaining_line}"
+          ;;
+        *)
+          ;;
+      esac
+    fi
+    modify_service_conf_new_content="$(printf "%s\n%s" "${modify_service_conf_new_content}" "${modify_service_conf_line}")"
+  done < "${modify_service_conf_file}"
+
+  if [ "${modify_service_conf_found}" -eq 0 ]; then
+    exit 1
+  fi
+
+  printf "%s\n" "${modify_service_conf_new_content}" > "${modify_service_conf_file}"
+}
+
+modify_service_conf "/etc/systemd/system/getty@tty1.service.d/autologin.conf" "ExecStart=-/sbin/agetty" "add" "--skip-login"
+modify_service_conf "/etc/systemd/system/getty@tty1.service.d/autologin.conf" "ExecStart=-/sbin/agetty" "add" "--nonewline"

raspberrypi/disable_motd.sh

@@ -0,0 +1,24 @@
+#!/bin/sh
+
+DATE="$(date +%s)"
+
+if [ -z "${DATE}" ]; then
+  DATE=default
+fi
+
+getent passwd |
+    awk -F: '($3 >= 1000 || $3 == 0) && $7 !~ /nologin|false$/ { print $6 "/.hushlogin" }' |
+    xargs -I {} sh -c "echo '${DATE}' | tee -a {} > /dev/null"
+
+if [ -e "/etc/update-motd.d/10-uname" ]; then
+  chmod -x /etc/update-motd.d/10-uname*
+  mv -f "/etc/update-motd.d/10-uname" "/etc/update-motd.d/10-uname.backup.${DATE}"
+fi
+
+if [ -e "/etc/motd" ]; then
+  mv -f "/etc/motd" "/etc/motd.backup.${DATE}"
+fi
+
+if [ -e "/etc/issue" ]; then
+  mv -f "/etc/issue" "/etc/issue.backup.${DATE}"
+fi

raspberrypi/enable_cursor.sh

@@ -0,0 +1,24 @@
+#!/bin/sh
+
+# note: this currently only works for key=value cmdline args
+modify_cmdline() {
+  if echo "${1}" | grep -q '='; then
+    modify_cmdline_key=$(echo "${1}" | cut -d'=' -f1)
+    modify_cmdline_value=$(echo "${1}" | cut -d'=' -f2-)
+  else
+    modify_cmdline_key="${1}"
+    modify_cmdline_value="${2}"
+  fi
+
+  modify_cmdline_cmdline="$(cat /boot/cmdline.txt)"
+
+  if echo "${modify_cmdline_cmdline}" | grep -q -E "\b${modify_cmdline_key}=[^ ]*"; then
+    modify_cmdline_cmdline=$(echo "${modify_cmdline_cmdline}" | sed "s/\b${modify_cmdline_key}=[^ ]*/${modify_cmdline_key}=${modify_cmdline_value}/g")
+  else
+    modify_cmdline_cmdline="${modify_cmdline_cmdline} ${modify_cmdline_key}=${modify_cmdline_value}"
+  fi
+
+  echo "${modify_cmdline_cmdline}" > /boot/cmdline.txt
+}
+
+modify_cmdline "vt.global_cursor_default=1"

raspberrypi/enable_disabled_cursor_blink.sh

@@ -0,0 +1,8 @@
+#!/bin/sh
+
+if systemctl list-units --full -all | grep -q "disable-cursor-blink.service"; then
+  systemctl disable disable-cursor-blink.service
+fi
+
+rm -f /etc/systemd/system/disable-cursor-blink.service
+systemctl daemon-reload

raspberrypi/enable_login_prompt.sh

@@ -0,0 +1,49 @@
+#!/bin/sh
+
+modify_service_conf() {
+  modify_service_conf_file="$1"
+  modify_service_conf_linePrefix="$2"
+  modify_service_conf_subcommand="$3"
+  modify_service_conf_flag="$4"
+
+  modify_service_conf_flag_escaped="$(echo "${modify_service_conf_flag}" | sed -e 's/[\\/&]/\\&/g')"
+  modify_service_conf_linePrefix_escaped="$(echo "${modify_service_conf_linePrefix}" | sed -e 's/[\\/&]/\\&/g')"
+
+  if [ ! -f "${modify_service_conf_file}" ]; then
+    exit 1
+  fi
+
+  modify_service_conf_new_content=""
+  modify_service_conf_found=0
+
+  while IFS= read -r modify_service_conf_line || [ -n "${modify_service_conf_line}" ]; do
+    if echo "${modify_service_conf_line}" | grep -q -e "^${modify_service_conf_linePrefix_escaped}"; then
+      modify_service_conf_found=1
+      #shellcheck disable=2295
+      remaining_line="${modify_service_conf_line#${modify_service_conf_linePrefix} }"
+      case "${modify_service_conf_subcommand}" in
+        add)
+          if ! echo "${remaining_line}" | grep -q -w -e "${modify_service_conf_flag_escaped}"; then
+            modify_service_conf_line="${modify_service_conf_linePrefix} ${modify_service_conf_flag} ${remaining_line}"
+          fi
+          ;;
+        del|delete)
+          remaining_line="$(echo "${remaining_line}" | sed "s/[[:space:]]*${modify_service_conf_flag_escaped}[[:space:]]*/ /g" | awk '{$1=$1};1')"
+          modify_service_conf_line="${modify_service_conf_linePrefix} ${remaining_line}"
+          ;;
+        *)
+          ;;
+      esac
+    fi
+    modify_service_conf_new_content="$(printf "%s\n%s" "${modify_service_conf_new_content}" "${modify_service_conf_line}")"
+  done < "${modify_service_conf_file}"
+
+  if [ "${modify_service_conf_found}" -eq 0 ]; then
+    exit 1
+  fi
+
+  printf "%s\n" "${modify_service_conf_new_content}" > "${modify_service_conf_file}"
+}
+
+modify_service_conf "/etc/systemd/system/getty@tty1.service.d/autologin.conf" "ExecStart=-/sbin/agetty" "del" "--skip-login"
+modify_service_conf "/etc/systemd/system/getty@tty1.service.d/autologin.conf" "ExecStart=-/sbin/agetty" "del" "--nonewline"

raspberrypi/optimize.sh

@@ -0,0 +1,7 @@
+#!/bin/sh
+
+curl -s "https://raw.githubusercontent.com/beeper/beepy/main/raspberrypi/optimize_boot.sh" | bash
+curl -s "https://raw.githubusercontent.com/beeper/beepy/main/raspberrypi/disable_motd.sh" | bash
+curl -s "https://raw.githubusercontent.com/beeper/beepy/main/raspberrypi/disable_login_prompt.sh" | bash
+curl -s "https://raw.githubusercontent.com/beeper/beepy/main/raspberrypi/disable_cursor_blink.sh" | bash
+curl -s "https://raw.githubusercontent.com/beeper/beepy/main/raspberrypi/disable_kernel_logs.sh" | bash

raspberrypi/optimize_boot.sh

@@ -1,8 +1,9 @@
 #!/bin/sh
 #This script reduces boot times from 60s to 19s on the RPi0w
 
+#shellcheck disable=SC2312
 if [ "$(id -u)" -ne 0 ]; then
-    echo "This script must be run as root" 
+    echo "This script must be run as root"
     exit 1
 fi
 

raspberrypi/set-cpu-count-to-2.sh

@@ -0,0 +1,24 @@
+#!/bin/sh
+
+# note: this currently only works for key=value cmdline args
+modify_cmdline() {
+  if echo "${1}" | grep -q '='; then
+    modify_cmdline_key=$(echo "${1}" | cut -d'=' -f1)
+    modify_cmdline_value=$(echo "${1}" | cut -d'=' -f2-)
+  else
+    modify_cmdline_key="${1}"
+    modify_cmdline_value="${2}"
+  fi
+
+  modify_cmdline_cmdline="$(cat /boot/cmdline.txt)"
+
+  if echo "${modify_cmdline_cmdline}" | grep -q -E "\b${modify_cmdline_key}=[^ ]*"; then
+    modify_cmdline_cmdline=$(echo "${modify_cmdline_cmdline}" | sed "s/\b${modify_cmdline_key}=[^ ]*/${modify_cmdline_key}=${modify_cmdline_value}/g")
+  else
+    modify_cmdline_cmdline="${modify_cmdline_cmdline} ${modify_cmdline_key}=${modify_cmdline_value}"
+  fi
+
+  echo "${modify_cmdline_cmdline}" > /boot/cmdline.txt
+}
+
+modify_cmdline "maxcpus=2"

raspberrypi/set-cpu-count-to-4.sh

@@ -0,0 +1,24 @@
+#!/bin/sh
+
+# note: this currently only works for key=value cmdline args
+modify_cmdline() {
+  if echo "${1}" | grep -q '='; then
+    modify_cmdline_key=$(echo "${1}" | cut -d'=' -f1)
+    modify_cmdline_value=$(echo "${1}" | cut -d'=' -f2-)
+  else
+    modify_cmdline_key="${1}"
+    modify_cmdline_value="${2}"
+  fi
+
+  modify_cmdline_cmdline="$(cat /boot/cmdline.txt)"
+
+  if echo "${modify_cmdline_cmdline}" | grep -q -E "\b${modify_cmdline_key}=[^ ]*"; then
+    modify_cmdline_cmdline=$(echo "${modify_cmdline_cmdline}" | sed "s/\b${modify_cmdline_key}=[^ ]*/${modify_cmdline_key}=${modify_cmdline_value}/g")
+  else
+    modify_cmdline_cmdline="${modify_cmdline_cmdline} ${modify_cmdline_key}=${modify_cmdline_value}"
+  fi
+
+  echo "${modify_cmdline_cmdline}" > /boot/cmdline.txt
+}
+
+modify_cmdline "maxcpus=4"