bash scripting assignment from theisraelolaleye

logs/backup.log

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+[2026-04-01 02:04:15] Backup successful: 'scripts' -> 'backups/backup_scripts_20260401_020415.tar.gz'

logs/file_manager.log

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+[2026-04-01 02:04:13] Created file: 'temp_test.txt'
+[2026-04-01 02:04:13] Renamed 'temp_test.txt' to 'temp_test_renamed.txt'
+[2026-04-01 02:04:13] Listed directory: '.'
+[2026-04-01 02:04:13] Deleted: 'temp_test_renamed.txt'

logs/process_monitor.log

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+[2026-04-01 02:04:15] Process 'bash' status: Running

logs/system_report_20260401_020414.log

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+System Check Report - Wed  1 Apr 2026 02:04:14 WAT
+========================================
+
+[Disk Usage]
+Filesystem                      Size    Used   Avail Capacity iused ifree %iused  Mounted on
+/dev/disk3s1s1                 460Gi    12Gi    20Gi    37%    455k  211M    0%   /
+devfs                          218Ki   218Ki     0Bi   100%     754     0  100%   /dev
+/dev/disk3s6                   460Gi   7.0Gi    20Gi    26%       7  211M    0%   /System/Volumes/VM
+/dev/disk3s2                   460Gi   8.1Gi    20Gi    29%    1.4k  211M    0%   /System/Volumes/Preboot
+/dev/disk3s4                   460Gi   3.0Mi    20Gi     1%      66  211M    0%   /System/Volumes/Update
+/dev/disk1s2                   500Mi   6.0Mi   483Mi     2%       1  4.9M    0%   /System/Volumes/xarts
+/dev/disk1s1                   500Mi   5.8Mi   483Mi     2%      31  4.9M    0%   /System/Volumes/iSCPreboot
+/dev/disk1s3                   500Mi   884Ki   483Mi     1%      63  4.9M    0%   /System/Volumes/Hardware
+/dev/disk3s5                   460Gi   412Gi    20Gi    96%    6.7M  211M    3%   /System/Volumes/Data
+map auto_home                    0Bi     0Bi     0Bi   100%       0     0     -   /System/Volumes/Data/home
+/dev/disk5s1                    16Gi    15Gi   471Mi    98%    498k  4.8M    9%   /Library/Developer/CoreSimulator/Volumes/iOS_21A342
+/dev/disk7s1                    17Gi    16Gi   438Mi    98%    608k  4.5M   12%   /Library/Developer/CoreSimulator/Volumes/iOS_23D8133
+/dev/disk9s1                   385Mi   308Mi    75Mi    81%     552  768k    0%   /Volumes/Redis Insight 2.70.1-arm64
+/Applications/Pi.app/Wrapper   460Gi   411Gi    17Gi    96%    6.7M  180M    4%   /private/var/folders/wb/mzs_c3rs3dxg3ny4_qjb8jr80000gn/X/3D6AE059-CE29-57AE-83C8-F52C55B49D47
+
+[Memory Usage]
+Mach Virtual Memory Statistics: (page size of 16384 bytes)
+Pages free:                                3607.
+Pages active:                             87622.
+Pages inactive:                           82929.
+Pages speculative:                         3702.
+Pages throttled:                              0.
+Pages wired down:                        128762.
+Pages purgeable:                            116.
+"Translation faults":                8593002225.
+Pages copy-on-write:                  133987569.
+Pages zero filled:                   1387209860.
+Pages reactivated:                   3309616018.
+Pages purged:                         195006250.
+File-backed pages:                        64104.
+Anonymous pages:                         110149.
+Pages stored in compressor:             1127316.
+Pages occupied by compressor:            180828.
+Decompressions:                      4188604159.
+Compressions:                        4461894951.
+Pageins:                              388002623.
+Pageouts:                               8041712.
+Swapins:                              175807753.
+Swapouts:                             184713802.
+
+[CPU Load]
+ 2:04  up 15 days, 17:21, 3 users, load averages: 2.29 2.17 3.60
+
+[Disk Usage Warnings (>80%)]
+WARNING: /dev/disk3s5 is at 96% usage (mount: /System/Volumes/Data)\nWARNING: /dev/disk5s1 is at 98% usage (mount: /Library/Developer/CoreSimulator/Volumes/iOS_21A342)\nWARNING: /dev/disk7s1 is at 98% usage (mount: /Library/Developer/CoreSimulator/Volumes/iOS_23D8133)\nWARNING: /dev/disk9s1 is at 81% usage (mount: /Volumes/Redis)\nWARNING: /Applications/Pi.app/Wrapper is at 96% usage (mount: /private/var/folders/wb/mzs_c3rs3dxg3ny4_qjb8jr80000gn/X/3D6AE059-CE29-57AE-83C8-F52C55B49D47)\n
+[Total Running Processes]
+512
+
+[Top 5 Memory-Consuming Processes]

logs/user_info.log

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+[2026-04-01 02:04:12] Hello, Alice from India. You are 22 years old and categorized as: Adult.

run_all.sh

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+#!/usr/bin/env bash
+
+set -euo pipefail
+
+LOG_DIR="logs"
+LOG_FILE="$LOG_DIR/app.log"
+
+mkdir -p "$LOG_DIR"
+
+timestamp() {
+  date "+%Y-%m-%d %H:%M:%S"
+}
+
+log_action() {
+  echo "[$(timestamp)] $1" | tee -a "$LOG_FILE"
+}
+
+run_system_check() {
+  log_action "Running system_check.sh"
+  if ./scripts/system_check.sh; then
+    log_action "system_check.sh completed successfully"
+  else
+    log_action "system_check.sh failed"
+  fi
+}
+
+run_backup() {
+  read -r -p "Enter directory path to back up: " backup_dir
+  log_action "Running backup.sh for '$backup_dir'"
+  if ./scripts/backup.sh "$backup_dir"; then
+    log_action "backup.sh completed successfully"
+  else
+    log_action "backup.sh failed"
+  fi
+}
+
+run_all() {
+  log_action "Running all core scripts"
+
+  if ./scripts/user_info.sh; then
+    log_action "user_info.sh completed successfully"
+  else
+    log_action "user_info.sh failed"
+  fi
+
+  run_system_check
+
+  if ./scripts/file_manager.sh list .; then
+    log_action "file_manager.sh completed successfully"
+  else
+    log_action "file_manager.sh failed"
+  fi
+
+  read -r -p "Enter directory path for backup in 'Run all': " backup_dir
+  if ./scripts/backup.sh "$backup_dir"; then
+    log_action "backup.sh completed successfully"
+  else
+    log_action "backup.sh failed"
+  fi
+}
+
+show_menu() {
+  echo
+  echo "===== DevOps Bash Toolkit ====="
+  echo "1. Run all"
+  echo "2. System check"
+  echo "3. Backup"
+  echo "4. Exit"
+  echo "==============================="
+}
+
+main() {
+  while true; do
+    show_menu
+    read -r -p "Choose an option [1-4]: " choice
+
+    case "$choice" in
+      1)
+        run_all
+        ;;
+      2)
+        run_system_check
+        ;;
+      3)
+        run_backup
+        ;;
+      4)
+        log_action "Exiting application"
+        exit 0
+        ;;
+      *)
+        echo "Invalid choice. Please select 1-4."
+        ;;
+    esac
+  done
+}
+
+main

scripts/backup.sh

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+#!/usr/bin/env bash
+
+LOG_DIR="logs"
+BACKUP_DIR="backups"
+LOG_FILE="$LOG_DIR/backup.log"
+
+mkdir -p "$LOG_DIR" "$BACKUP_DIR"
+
+timestamp() {
+  date "+%Y-%m-%d %H:%M:%S"
+}
+
+log_action() {
+  echo "[$(timestamp)] $1" | tee -a "$LOG_FILE"
+}
+
+source_dir="$1"
+
+if [[ -z "$source_dir" ]]; then
+  log_action "Backup failed: No directory provided. Usage: $0 <directory>"
+  exit 1
+fi
+
+if [[ ! -d "$source_dir" ]]; then
+  log_action "Backup failed: '$source_dir' is not a valid directory."
+  exit 1
+fi
+
+source_base="$(basename "$source_dir")"
+archive_name="backup_${source_base}_$(date +%Y%m%d_%H%M%S).tar.gz"
+archive_path="$BACKUP_DIR/$archive_name"
+
+if tar -czf "$archive_path" -C "$(dirname "$source_dir")" "$source_base"; then
+  log_action "Backup successful: '$source_dir' -> '$archive_path'"
+else
+  log_action "Backup failed while creating archive for '$source_dir'"
+  exit 1
+fi
+
+# Keep only the 5 most recent backups.
+ls -1t "$BACKUP_DIR"/*.tar.gz 2>/dev/null | awk 'NR>5' | while IFS= read -r old_backup; do
+  rm -f "$old_backup"
+  log_action "Removed old backup: '$old_backup'"
+done

scripts/file_manager.sh

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+#!/usr/bin/env bash
+
+LOG_DIR="logs"
+LOG_FILE="$LOG_DIR/file_manager.log"
+
+mkdir -p "$LOG_DIR"
+
+timestamp() {
+  date "+%Y-%m-%d %H:%M:%S"
+}
+
+log_action() {
+  echo "[$(timestamp)] $1" >> "$LOG_FILE"
+}
+
+usage() {
+  echo "Usage: $0 {create|delete|list|rename} [args]"
+  echo "Examples:"
+  echo "  $0 create file.txt"
+  echo "  $0 delete file.txt"
+  echo "  $0 list ."
+  echo "  $0 rename old.txt new.txt"
+}
+
+command="$1"
+
+case "$command" in
+  create)
+    file="$2"
+    if [[ -z "$file" ]]; then
+      echo "Error: Please provide a filename to create."
+      usage
+      exit 1
+    fi
+
+    if [[ -e "$file" ]]; then
+      msg="Create failed: '$file' already exists."
+      echo "$msg"
+      log_action "$msg"
+      exit 1
+    fi
+
+    touch "$file"
+    msg="Created file: '$file'"
+    echo "$msg"
+    log_action "$msg"
+    ;;
+
+  delete)
+    file="$2"
+    if [[ -z "$file" ]]; then
+      echo "Error: Please provide a filename to delete."
+      usage
+      exit 1
+    fi
+
+    if [[ ! -e "$file" ]]; then
+      msg="Delete failed: '$file' does not exist."
+      echo "$msg"
+      log_action "$msg"
+      exit 1
+    fi
+
+    rm -f "$file"
+    msg="Deleted: '$file'"
+    echo "$msg"
+    log_action "$msg"
+    ;;
+
+  list)
+    target="${2:-.}"
+    if [[ ! -d "$target" ]]; then
+      msg="List failed: '$target' is not a directory."
+      echo "$msg"
+      log_action "$msg"
+      exit 1
+    fi
+
+    echo "Listing files in '$target':"
+    ls -la "$target"
+    log_action "Listed directory: '$target'"
+    ;;
+
+  rename)
+    old_name="$2"
+    new_name="$3"
+
+    if [[ -z "$old_name" || -z "$new_name" ]]; then
+      echo "Error: Please provide source and destination names."
+      usage
+      exit 1
+    fi
+
+    if [[ ! -e "$old_name" ]]; then
+      msg="Rename failed: '$old_name' does not exist."
+      echo "$msg"
+      log_action "$msg"
+      exit 1
+    fi
+
+    if [[ -e "$new_name" ]]; then
+      msg="Rename failed: '$new_name' already exists."
+      echo "$msg"
+      log_action "$msg"
+      exit 1
+    fi
+
+    mv "$old_name" "$new_name"
+    msg="Renamed '$old_name' to '$new_name'"
+    echo "$msg"
+    log_action "$msg"
+    ;;
+
+  *)
+    echo "Error: Invalid command."
+    usage
+    exit 1
+    ;;
+esac

scripts/logs/user_info.log

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+Name: Israel | Age: 27 | Country: Nigeria | Category: Adult
+
+
+

scripts/process_monitor.sh

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+#!/usr/bin/env bash
+
+LOG_DIR="logs"
+LOG_FILE="$LOG_DIR/process_monitor.log"
+services=("nginx" "ssh" "docker")
+
+mkdir -p "$LOG_DIR"
+
+timestamp() {
+  date "+%Y-%m-%d %H:%M:%S"
+}
+
+log_action() {
+  echo "[$(timestamp)] $1" | tee -a "$LOG_FILE"
+}
+
+process_name="$1"
+
+if [[ -z "$process_name" ]]; then
+  echo "Usage: $0 <process_name>"
+  echo "Supported examples: ${services[*]}"
+  exit 1
+fi
+
+if pgrep -x "$process_name" >/dev/null 2>&1 || pgrep -f "$process_name" >/dev/null 2>&1; then
+  log_action "Process '$process_name' status: Running"
+  exit 0
+fi
+
+log_action "Process '$process_name' status: Stopped"
+
+# Simulate restart for safety in student environments.
+log_action "Attempting restart for '$process_name' (simulated)..."
+sleep 1
+log_action "Process '$process_name' status: Restarted (simulated)"

scripts/system_check.sh

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+#!/bin/bash
+
+echo "Enter your name:"
+read name
+
+echo "Enter your age:"
+read age
+
+echo "Enter your country:"
+read country
+
+if [ -z "$name" ] || [ -z "$age" ] || [ -z "$country" ]; then
+    echo "Error: All fields are required."
+    exit 1
+fi