ext4-defrag.sh

#!/usr/bin/bash

# this script will check and defrag a specified partition via user input on the vast majority of unix-like systems
# it can be ran on a mounted partition or an unmounted one

# warn and inform user
echo "$(tput bold)WARNING!$(tput sgr0)"
echo "inputting the wrong mount point or partition/device path could harm your system!"
echo "To know the mount point of a partition or the device path of a mounted partition"
echo "run the \"mount\" command and look for your partition. or on some desktop environments"
echo "open the context menu on your mounted partition in your file manager."
echo " "

# get partition
read -p "Enter partition you wish to defrag (eg. sda1): /dev/" devDiskPartDirty
devDiskPartLower=$(tr '[:upper:]' '[:lower:]' <<< $devDiskPartDirty)
devDiskPart=$(tr -d ' ' <<< $devDiskPartLower)

# get mount point
read -r -p "Enter the current mount point for this partition (eg. /run/media/user/coolDrive/): " mountPoint

sudo umount "$mountPoint"

# sanity check
sudo fsck.ext4 -y -f /dev/$devDiskPart
read -p "$(tput bold)Sanity check!$(tput sgr0) is the drive fucked? no? then press [Enter] to start defrag :P"

# start optimize and defrag of HDDGames drive
sudo fsck.ext4 -y -f -D /dev/$devDiskPart

# proper defrag
sudo mount /dev/$devDiskPart "$mountPoint"
sudo e4defrag /dev/$devDiskPart

# show current fragmentation stats and remount drive
sudo umount "$mountPoint"
echo "current fragmentation stats:"
sudo fsck.ext4 -y -f /dev/$devDiskPart
sudo mount /dev/$devDiskPart "$mountPoint"
echo "DONE ^w^"