fstab-generator

#!/bin/bash
# fstab-generator.sh - Interactive fstab creator

cat << 'EOF' | borderize
FSTAB GENERATOR
Interactive partition configuration tool
EOF

echo

# Detect available block devices
echo "=== Available Block Devices ==="
lsblk -o NAME,SIZE,TYPE,FSTYPE,MOUNTPOINT | grep -E "disk|part"
echo

# Initialize fstab content
FSTAB="# /etc/fstab: static file system information
# <file system>  <mount point>  <type>  <options>  <dump>  <pass>
"

# Function to get partition info
get_partition() {
    local prompt="$1"
    local mountpoint="$2"
    local default_opts="$3"
    local dump="$4"
    local pass="$5"
    
    echo -e "\n--- $prompt ---"
    read -p "Partition (e.g., /dev/sda1) or [SKIP]: " part
    
    if [[ "$part" != "SKIP" && -n "$part" ]]; then
        # Detect filesystem type
        fstype=$(lsblk -no FSTYPE "$part" 2>/dev/null)
        [[ -z "$fstype" ]] && read -p "Filesystem type: " fstype
        
        # Get UUID
        uuid=$(blkid -s UUID -o value "$part" 2>/dev/null)
        if [[ -n "$uuid" ]]; then
            part="UUID=$uuid"
        fi
        
        # Custom options?
        read -p "Mount options [$default_opts]: " opts
        opts=${opts:-$default_opts}
        
        # Add to fstab
        printf "%-38s %-14s %-7s %-15s %s %s\n" \
            "$part" "$mountpoint" "$fstype" "$opts" "$dump" "$pass" >> /tmp/fstab.tmp
    fi
}

# Create temp file
> /tmp/fstab.tmp

# Collect partitions
get_partition "ROOT PARTITION" "/" "defaults" "0" "1"
get_partition "BOOT/EFI PARTITION" "/boot/efi" "defaults" "0" "2"
get_partition "HOME PARTITION" "/home" "defaults" "0" "2"
get_partition "SWAP PARTITION" "none" "sw" "0" "0"

# Additional partitions
while true; do
    echo -e "\n--- ADDITIONAL PARTITION ---"
    read -p "Add another partition? [y/N]: " add
    [[ "$add" != "y" && "$add" != "Y" ]] && break
    
    read -p "Partition: " part
    read -p "Mount point: " mpoint
    fstype=$(lsblk -no FSTYPE "$part" 2>/dev/null)
    [[ -z "$fstype" ]] && read -p "Filesystem type: " fstype
    
    uuid=$(blkid -s UUID -o value "$part" 2>/dev/null)
    [[ -n "$uuid" ]] && part="UUID=$uuid"
    
    read -p "Options [defaults]: " opts
    opts=${opts:-defaults}
    
    read -p "Dump [0]: " dump
    dump=${dump:-0}
    
    read -p "Pass [2]: " pass
    pass=${pass:-2}
    
    printf "%-38s %-14s %-7s %-15s %s %s\n" \
        "$part" "$mpoint" "$fstype" "$opts" "$dump" "$pass" >> /tmp/fstab.tmp
done

# Display generated fstab
echo -e "\n=== GENERATED FSTAB ==="
cat << 'EOF' | borderize
Preview of /etc/fstab
EOF
echo
echo "$FSTAB"
cat /tmp/fstab.tmp
echo

# Save options
read -p "Save to file? [/tmp/fstab]: " outfile
outfile=${outfile:-/tmp/fstab}

echo "$FSTAB" > "$outfile"
cat /tmp/fstab.tmp >> "$outfile"

echo -e "\n✓ Saved to: $outfile"
echo "  To install: sudo cp $outfile /etc/fstab"
echo "  To test: sudo mount -a"

rm -f /tmp/fstab.tmp