feat: complete bash scripts

logs/user_info.log

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+Fri Apr  3 16:20:36 WAT 2026: Hello hammed from Nigeria. You are an Adult.

scripts/backup.sh

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+#!/bin/bash
+
+LOG_FILE="../logs/backup.log"
+BACKUP_DIR="../backups"
+
+input_dir=$1
+
+if [ ! -d "$input_dir" ]; then
+    echo "Directory does not exist!"
+    exit 1
+fi
+
+timestamp=$(date +%F_%H-%M-%S)
+backup_file="$BACKUP_DIR/backup_$timestamp.tar.gz"
+
+tar -czf "$backup_file" "$input_dir"
+
+echo "$(date): Backup created - $backup_file" >> "$LOG_FILE"
+
+# Keep only last 5 backups
+ls -t "$BACKUP_DIR" | tail -n +6 | while read file; do
+    rm "$BACKUP_DIR/$file"
+done

scripts/file_manager.sh

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+#!/bin/bash
+
+LOG_FILE="../logs/file_manager.log"
+
+action=$1
+file=$2
+
+case $action in
+    create)
+        if [ -f "$file" ]; then
+            echo "File already exists!"
+        else
+            touch "$file"
+            echo "$(date): Created $file" >> "$LOG_FILE"
+        fi
+        ;;
+    delete)
+        if [ -f "$file" ]; then
+            rm "$file"
+            echo "$(date): Deleted $file" >> "$LOG_FILE"
+        else
+            echo "File does not exist!"
+        fi
+        ;;
+    list)
+        ls
+        ;;
+    rename)
+        new_name=$3
+        mv "$file" "$new_name"
+        echo "$(date): Renamed $file to $new_name" >> "$LOG_FILE"
+        ;;
+    *)
+        echo "Usage: $0 {create|delete|list|rename} filename"
+        ;;
+esac

scripts/system_check.sh

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+#!/bin/bash
+
+DATE=$(date +%F)
+LOG_FILE="../logs/system_report_$DATE.log"
+
+echo "System Report - $DATE" > "$LOG_FILE"
+
+echo "Disk Usage:" | tee -a "$LOG_FILE"
+df -h | tee -a "$LOG_FILE"
+
+echo "Memory Usage:" | tee -a "$LOG_FILE"
+free -m | tee -a "$LOG_FILE"
+
+echo "CPU Load:" | tee -a "$LOG_FILE"
+uptime | tee -a "$LOG_FILE"
+
+# Disk warning
+usage=$(df / | awk 'NR==2 {print $5}' | sed 's/%//')
+
+if [ "$usage" -gt 80 ]; then
+    echo "WARNING: Disk usage is above 80%" | tee -a "$LOG_FILE"
+fi
+
+# Process count
+echo "Total running processes:" | tee -a "$LOG_FILE"
+ps aux | wc -l | tee -a "$LOG_FILE"
+
+# Top 5 memory processes
+echo "Top 5 memory-consuming processes:" | tee -a "$LOG_FILE"
+ps aux --sort=-%mem | head -6 | tee -a "$LOG_FILE"

scripts/user_info.sh

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+#!/bin/bash
+
+LOG_FILE="../logs/user_info.log"
+
+# Ask for input
+read -p "Enter your name: " name
+read -p "Enter your age: " age
+read -p "Enter your country: " country
+
+# Validate inputs
+if [[ -z "$name" || -z "$age" || -z "$country" ]]; then
+    echo "Error: All fields are required."
+    exit 1
+fi
+
+if ! [[ "$age" =~ ^[0-9]+$ ]]; then
+    echo "Error: Age must be a number."
+    exit 1
+fi
+
+# Determine age category
+if (( age < 18 )); then
+    category="Minor"
+elif (( age <= 65 )); then
+    category="Adult"
+else
+    category="Senior"
+fi
+
+# Output message
+message="Hello $name from $country. You are an $category."
+
+echo "$message"
+
+# Save to log
+echo "$(date): $message" >> "$LOG_FILE"