cli-scripts/scripts/usedisk
2024-03-01 13:09:10 +00:00

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#!/usr/bin/env bash
MEDIADIR="/media/gmgauthier"
format=0 # Don't format disk images that already exist
# get name of freshly created blank disk, or create one
if [ $# -eq 0 ]; then
echo ">>> NEW DISK IS BEING CREATED..."
PREFIX="floppy"
RANDO=$(od -An -N4 -i < /dev/urandom|sed 's/[ -]//g')
DISK="$PREFIX$RANDO"
dd if=/dev/zero of=$DISK.img bs=1k count=1440
format=1
else
DISK=$1
if ! [ -f $DISK.img ]; then
dd if=/dev/zero of=$DISK.img bs=1k count=1440
format=1
fi
fi
# Find the next available loop device on the system
echo ">>> LOOP DEVICE IS BEING IDENTIFIED..."
list=$(losetup -O name|sed 's/\/dev\/loop//g'|sed 's/NAME//g'|sort - --sort=human-numeric)
### listarr=(${(@s: :)list}) # zsh version of the array generator
listarr=($(echo $list | tr " " "\n")) #bash version of array generator
lastdev=${listarr[-1]}
lastdevnum=$((lastdev))
nextdev=$((lastdevnum+1))
# allocate the next available loop device, format the disk, and mount it.
nextdevname="/dev/loop$nextdev"
echo ">>> LOOP DEVICE $nextdevname RESERVED FOR DISK: $DISK.img"
sudo losetup $nextdevname $DISK.img
if [ $format -eq 1 ]; then
echo ">>> DISK IMAGE IS RAW AND WILL BE FORMATTED"
sudo mkfs -t vfat $nextdevname
fi
if ! [ -d $MEDIADIR/$DISK ]; then
echo ">>> MOUNT DIRECTORY NOT FOUND. CREATING DIRECTORY NOW."
sudo mkdir $MEDIADIR/$DISK
fi
echo ">>> DISK $DISK.img MOUNTING AT LOCATION: $MEDIADIR/$DISK"
sudo mount $DISK.img $MEDIADIR/$DISK
if [ $format -eq 1 ]; then
echo ">>> DISK INFORMATION BEING COPIED TO $DISK.img"
sudo fdisk -l $nextdevname >> $DISK-fdisk.txt
sudo cp $DISK-fdisk.txt $MEDIADIR/$DISK/$DISK.txt && rm $DISK-fdisk.txt
fi