Updates

bash-scripts/system-clean.sh

@@ -0,0 +1,97 @@
+#!/bin/bash
+
+# ============================
+# Colours
+# ============================
+RED="\e[31m"
+GREEN="\e[32m"
+YELLOW="\e[33m"
+BLUE="\e[34m"
+MAGENTA="\e[35m"
+CYAN="\e[36m"
+BOLD="\e[1m"
+RESET="\e[0m"
+
+line() {
+  echo -e "${CYAN}────────────────────────────────────────────────────────${RESET}"
+}
+
+# ============================
+# DATE HEADER
+# ============================
+echo -e "${BOLD}${MAGENTA}=== System Clean Run: $(date '+%Y-%m-%d %H:%M:%S') ===${RESET}"
+line
+
+echo -e "${BOLD}${GREEN}=== Ubuntu System Cleanup ===${RESET}"
+line
+
+# ============================
+# 1. Clean APT cache
+# ============================
+echo -y >/dev/null 2>&1
+sudo apt autoclean -y >/dev/null 2>&1
+sudo apt clean -y >/dev/null 2>&1
+echo -e "${GREEN}✓ APT cache cleaned.${RESET}"
+line
+
+# ============================
+# 2. Journal logs cleanup
+# ============================
+echo -e "${BOLD}${BLUE}[2/8] Cleaning journal logs (keeping 100MB)...${RESET}"
+echo -e "${CYAN}Current journal disk usage:${RESET}"
+journalctl --disk-usage || true
+sudo journalctl --vacuum-size=100M >/dev/null 2>&1
+echo -e "${GREEN}✓ Journal logs vacuumed.${RESET}"
+line
+
+# ============================
+# Remove old logs
+# ============================
+echo -e "${BOLD}${BLUE}[3/8] Removing rotated logs...${RESET}"
+sudo find /var/log -type f -name "*.gz" -delete
+sudo find /var/log -type f -name "*.1" -delete
+echo -e "${GREEN}✓ Old log archives removed.${RESET}"
+line
+
+# ============================
+# 4. Clear /tmp and /var/tmp
+# ============================
+echo -e "${BOLD}${BLUE}[4/8] Clearing temp directories...${RESET}"
+sudo rm -rf /tmp/* /var/tmp/*
+echo -e "${GREEN}✓ Temporary files cleared.${RESET}"
+line
+
+# ============================
+# 5. Free RAM (cache)
+# ============================
+echo -e "${BOLD}${BLUE}[5/8] Dropping filesystem caches (safe)...${RESET}"
+sync
+echo 3 | sudo tee /proc/sys/vm/drop_caches >/dev/null
+echo -e "${GREEN}✓ RAM caches dropped.${RESET}"
+line
+
+# ============================
+# 6. Reset failed services
+# ============================
+echo -e "${BOLD}${BLUE}[6/8] Resetting failed systemd units...${RESET}"
+sudo systemctl reset-failed >/dev/null 2>&1
+echo -e "${GREEN}✓ Failed units reset.${RESET}"
+line
+
+# ============================
+# 7. Disk usage snapshot
+# ============================
+echo -e "${BOLD}${BLUE}[7/8] Largest directories under / ...${RESET}"
+du -h --max-depth=1 / 2>/dev/null | sort -hr | head -n 10
+echo -e "${GREEN}✓ Disk usage shown.${RESET}"
+line
+
+# ============================
+# 8. CPU usage snapshot
+# ============================
+echo -e "${BOLD}${BLUE}[8/8] Top CPU-consuming processes...${RESET}"
+ps -eo pid,ppid,cmd,%mem,%cpu --sort=-%cpu | head
+echo -e "${GREEN}✓ CPU snapshot shown.${RESET}"
+line
+
+echo -e "${BOLD}${GREEN}=== Cleanup Complete! ===${RESET}"