format-fat32-ums

#!/bin/bash
# Advanced script to install and configure Arch with ppp on indicated sdcardtoformat
# More info and newest @ http://www.github.com/iugamarian/raspberrypisetup
# Version 1.73 tested and it works
# Forked from ShorTie	<idiot@dot.com> 
# Brought to you by iugamarian	<iugamarian@yahoo.com> 
# Configuration - choose here carefuly 

sdcardtoformat=/dev/sdwhat 			# Before running, lsblk to indicate card here
partitionname=MUSIC64

#********** END Configuration **************************************************************

# Check to see if device is indicated
if [ `echo $sdcardtoformat | grep sdwhat |wc -c` -eq 0 ]; then
    echo ""
    echo "The drive to move root to is $sdcardtoformat."
    echo ""
else
    lsblk
    echo ""
    echo "Specify the drive by editing the beginning of this script."
    echo ""
    exit 1
fi
# Check to see if running as root
echo -e "\nChecking for root."
if [ `id -u` != 0 ]; then
    echo "Not root."
    echo -e "Need to be run as root.\n"
    echo " Try 'sudo sh rpiarchppp' as a user. Exiting."
    echo ""
    exit 1
else
    echo "Root."
fi
# Allowing dd to be able to clear MBR (permission)
viewsudouser=`logname`
viewroot=""
# A string echo "" is seen by wc as having 1 character so n+1, and a failed grep has a wc of 0
if [ `echo $viewsudouser | grep "root" |wc -c` != 0 ] && [ `echo $viewsudouser |wc -c` = 5 ]; then
viewroot="root"
fi
# On Arch a no login name gives a wc of 1
if [ `echo $viewsudouser |wc -c` = 1 ]; then
viewroot="root"
fi
# On other systems no login name maybe gives no login name
if [ `echo $viewsudouser | grep "no login name" |wc -c` != 0 ]; then
viewroot="root"
fi
if [ `echo $viewroot |wc -c` != 1 ]; then
echo ""
echo "Only root."
echo "Adding root to the disk group."
echo""
usermod -G disk --append root
else
echo ""
echo "Sudo is used by a user named $viewsudouser."
echo "Adding user named $viewsudouser to the disk group."
echo ""
usermod -G disk --append $viewsudouser
fi
echo ""
echo "Checking for programs that are needed:"
echo ""
# On other distributions the user installs them
neededprograms=""
if [ `which fdisk |wc -c` != 0 ]; then
echo "Found fdisk."
else
neededprograms+="fdisk "
fi
if [ `which mkfs.vfat |wc -c` != 0 ]; then
echo "Found mkfs.vfat."
else
neededprograms+="mkfs.vfat "
fi
if [ `which wget |wc -c` != 0 ]; then
echo "Found wget."
else
neededprograms+="wget "
fi
echo ""
if [ "$neededprograms" = "" ]; then
echo "All needed programs available."
else
echo "Missing needed programs, install them:"
echo ""
echo $neededprograms
echo ""
echo "On Arch fdisk is in util-linux which is in base-devel."
echo ""
echo "On Arch mkfs.vfat is in dosfstools."
echo ""
echo "Exiting."
echo ""
exit 1
fi
# Detecting availability of indicated device
if ! (fdisk -l | grep $sdcardtoformat); then
    echo "Can't find ($sdcardtoformat). Insert and indicate it."
    echo "No files. Only devices. Exiting."
    echo ""
    exit 1
else
    echo "Found indicated device $sdcardtoformat."
    echo ""
fi
echo ""
echo "============================================================"
echo ""
sleep 2
# Safety unmounting of possible partitions, logicals can start from 5
echo "Unmounting partitions, up to 9, with or without p in front:"
echo ""
umount "$sdcardtoformat"1
umount "$sdcardtoformat"2
umount "$sdcardtoformat"3
umount "$sdcardtoformat"4
umount "$sdcardtoformat"5
umount "$sdcardtoformat"6
umount "$sdcardtoformat"7
umount "$sdcardtoformat"8
umount "$sdcardtoformat"9
umount "$sdcardtoformat"p1
umount "$sdcardtoformat"p2
umount "$sdcardtoformat"p3
umount "$sdcardtoformat"p4
umount "$sdcardtoformat"p5
umount "$sdcardtoformat"p6
umount "$sdcardtoformat"p7
umount "$sdcardtoformat"p8
umount "$sdcardtoformat"p9
swapoff "$sdcardtoformat"1
swapoff "$sdcardtoformat"2
swapoff "$sdcardtoformat"3
swapoff "$sdcardtoformat"4
swapoff "$sdcardtoformat"5
swapoff "$sdcardtoformat"6
swapoff "$sdcardtoformat"7
swapoff "$sdcardtoformat"8
swapoff "$sdcardtoformat"9
swapoff "$sdcardtoformat"p1
swapoff "$sdcardtoformat"p2
swapoff "$sdcardtoformat"p3
swapoff "$sdcardtoformat"p4
swapoff "$sdcardtoformat"p5
swapoff "$sdcardtoformat"p6
swapoff "$sdcardtoformat"p7
swapoff "$sdcardtoformat"p8
swapoff "$sdcardtoformat"p9
echo ""
sleep 5
echo ""
echo "Deleting MBR and fat allocation table general area with dd:"
# Need to dd more because fat filesystems may get confused about random
# data in their first part where they store the fat allocation table
dd if=/dev/zero of=$sdcardtoformat bs=1M count=32 iflag=fullblock
echo ""
echo ""
echo "Partitioning indicated device:"
echo ""
# On fdisk older than 25, setting bootable flag adds 1 after a: "a,1" < 25, "a" >= 25
# But I follow the archlinuxarm instructions which don't set booteble flag
# "Fdisk area". Be careful about the new lines (Enter).
fdisk $sdcardtoformat <<EOF
o
n




t
c
w
EOF
# Finished partitioning. Be careful about the new lines (Enter).
sleep 5
echo ""
echo "=================================================="
echo ""
echo ""
echo "Detecting if the device is seen as a mmcblk so that partitions have a p in front"
echo ""
if [ `echo $sdcardtoformat | grep mmcblk |wc -c` != 0 ]; then
echo ""
echo "Partition numbers have a p in front of them..."
bootpart="$sdcardtoformat"p1
else
echo ""
echo "Partition numbers don't have a p in front of them..."
bootpart="$sdcardtoformat"1
fi
echo ""
echo -n "Boot partition is "
echo $bootpart
echo ""
echo ""
echo "Formatting partition:"
echo ""
mkfs.vfat -n $partitionname $bootpart
echo "Exiting happy."
echo ""
sleep 2
sync
sleep 2
exit 0