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Batch write multiple usb in same time

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Top Forums Shell Programming and Scripting Batch write multiple usb in same time
# 1  
Old 11-18-2011
Batch write multiple usb in same time
Hi there,

I would write a bash script to format then create a range of folder (folder name is number) to a usb stick.
Code:
for numbers in $(seq -w 001 999)
do
  pause "Press any key to start"
  mkfs.vfat -F32 /dev/sdc1 
  mount /dev/sdc1 /media/usb
  mkdir /media/$numbers
  umount /dev/sdc1
done

But its not effectively because I only can create one folder in one time.
and sometimes write fail because usb is not ready
If I plug 10 usb stick in hub, how can I modify script to create folder on multiple disk in same time?

thanks~
Last edited by Scott; 11-18-2011 at 03:54 AM.. Reason: Added code tags
# 2  
Old 11-18-2011
I think there is something wrong with your script!
If you are mounting your device to: /media/usb, why you are creating the directories like this: "mkdir /media/$numbers", it should be: "mkdir /media/usb/$numbers". Also, if I understood what you want, why you are formatting your usb every loop?

Try this:
Code:
checkRetCode ()
{
	lstRetCode=${?}
	lineNo="${1}"
	
	if [ ${lstRetCode} -ne 0 ]
	then
		echo "Last command returned and invalid code: [${lstRetCode}]. Line number: [${lineNo}]."
		exit 1
	fi
}

processUsbDev ()
{
	usbDevName="${1}"
	baseMountPoint="${2}"
	numDirs="${3:-999}"
	numRetries="${4:-3}"

	usbDev="/dev/${usbDevName}"

	echo "Formatting usb disk: [${usbDev}]"
	mkfs.vfat -F32 "${usbDev}"
	checkRetCode "${LINENO}"

	mountPoint="${baseMountPoint}/${usbDevName}"
	if [ ! -d "${mountPoint}" ]
	then
		mkdir "${mountPoint}"
		checkRetCode "${LINENO}"
	fi
	
	echo "Mounting disk: [${usbDev}] under: [${mountPoint}]"
	mount ${usbDev} ${mountPoint}
	checkRetCode "${LINENO}"
	
	countDirs=1
	echo "Creating directories under: [${mountPoint}] - [${countDirs}][${numDirs}]..."
	
	while [ ${countDirs} -le ${numDirs} ] 
	do
		countDirStr=`echo "${countDirs}" | awk '{printf("%03d\n", $0)}'`
		createDir="${mountPoint}/${countDirStr}"
		
		countRetries=0
		while true
		do
			mkdir "${createDir}"
			retCode=${?}
			if [ ${retCode} -ne 0 ]
			then
				if [ ${countRetries} -ge ${countRetries} ]
				then
					echo "Failed to create directory: [${createDir}]!"
					break
				fi
			else
				break
			fi
			countRetries=`expr ${countRetries} + 1`
		done
		
		countDirs=`expr ${countDirs} + 1`
	done
	
	umount ${usbDev}
	checkRetCode "${LINENO}"
}

echo "Press any key to start!"
read

processUsbDev "sdc1" "/media/usb" "999" "3"

I was unable to test it, but should work!
Last edited by felipe.vinturin; 11-18-2011 at 08:04 AM..
This User Gave Thanks to felipe.vinturin For This Post:
wayneliao38
# 3  
Old 11-18-2011
Hi felipe,
thanks for your script, it's easy to understand.
But after run this script, folders were only created on a specify usbdevname,
My idea is to create one folder on each one USB stick.
For example, I plug 4 usb on my pc, when I press any key, folder was created to each USB and name will be 001(usb1) 002(usb2) 003(usb3) 004(usb4).

On next action, script will keep mkdir until the end of number.

Is that possible?
# 4  
Old 11-18-2011
So, based on what you want, the 005 will be back to usb1?

Code:
001(usb1) 002(usb2) 003(usb3) 004(usb4)
005(usb1) 006(usb2) 007(usb3) 008(usb4)
...

Is that correct?
# 5  
Old 11-18-2011
yes this is what I need, four USB work on the same time will be better, or one by one also good for me.
# 6  
Old 11-18-2011
Try this:
Code:
checkRetCode ()
{
	lstRetCode=${?}
	lineNo="${1}"
	
	if [ ${lstRetCode} -ne 0 ]
	then
		echo "Last command returned and invalid code: [${lstRetCode}]. Line number: [${lineNo}]."
		exit 1
	fi
}

processUsbDev ()
{
	usbDevNamesCSV="${1}"
	baseMountPoint="${2}"
	numDirs="${3:-999}"
	numRetries="${4:-3}"

	usbDevBase="/dev"

	OIFS="${IFS}"
	IFS=","
	for usbDevName in ${usbDevNamesCSV}
	do
		usbDev="${usbDevBase}/${usbDevName}"
		
		echo "Formatting usb disk: [${usbDev}]"
		mkfs.vfat -F32 "${usbDev}"
		checkRetCode "${LINENO}"

		mountPoint="${baseMountPoint}/${usbDevName}"
		if [ ! -d "${mountPoint}" ]
		then
			mkdir "${mountPoint}"
			checkRetCode "${LINENO}"
		fi
		
		echo "Mounting disk: [${usbDev}] under: [${mountPoint}]"
		mount ${usbDev} ${mountPoint}
		checkRetCode "${LINENO}"
	done
	IFS="${OIFS}"

	countDirs=1
	countDevs=1
	
	numOfDevs=`echo "${usbDevNamesCSV}" | awk -F"," '{print NF}'`
	
	while [ ${countDirs} -le ${numDirs} ] 
	do
		[ ${countDevs} -gt ${numOfDevs} ] && countDevs=1

		countDirStr=`echo "${countDirs}" | awk '{printf("%03d\n", $0)}'`
		usbDevName=`echo "${usbDevNamesCSV}" | awk -F"," -v usbDev="${countDevs}" '{print $usbDev}'`
		
		mountPoint="${baseMountPoint}/${usbDevName}"
		createDir="${mountPoint}/${countDirStr}"
		
		echo "Creating directory under: [${mountPoint}] - [${countDirStr}][${usbDevName}]..."
		
		countRetries=0
		while true
		do
			mkdir "${createDir}"
			retCode=${?}
			if [ ${retCode} -ne 0 ]
			then
				if [ ${countRetries} -ge ${countRetries} ]
				then
					echo "Failed to create directory: [${createDir}]!"
					break
				fi
			else
				break
			fi
			countRetries=`expr ${countRetries} + 1`
		done
		
		countDevs=`expr ${countDevs} + 1`
		countDirs=`expr ${countDirs} + 1`
	done
	
	OIFS="${IFS}"
	IFS=","
	for usbDevName in ${usbDevNamesCSV}
	do
		usbDev="${usbDevBase}/${usbDevName}"
		umount ${usbDev}
		if [ ${?} -ne 0 ]
		then
			echo "Failed to umount: [${usbDev}]."
		fi
	done
	IFS="${OIFS}"
}

echo "Press any key to start!"
read

processUsbDev "sdc1,sdc2,sdc3,sdc4" "/media/usb" "999" "3"

And a sample output:
Code:
Press any key to start!

Formatting usb disk: [/dev/sdc1]
Mounting disk: [/dev/sdc1] under: [/media/usb/sdc1]
Formatting usb disk: [/dev/sdc2]
Mounting disk: [/dev/sdc2] under: [/media/usb/sdc2]
Formatting usb disk: [/dev/sdc3]
Mounting disk: [/dev/sdc3] under: [/media/usb/sdc3]
Formatting usb disk: [/dev/sdc4]
Mounting disk: [/dev/sdc4] under: [/media/usb/sdc4]
Creating directory under: [/media/usb/sdc1] - [001][sdc1]...
Creating directory under: [/media/usb/sdc2] - [002][sdc2]...
Creating directory under: [/media/usb/sdc3] - [003][sdc3]...
Creating directory under: [/media/usb/sdc4] - [004][sdc4]...
Creating directory under: [/media/usb/sdc1] - [005][sdc1]...
Creating directory under: [/media/usb/sdc2] - [006][sdc2]...
Creating directory under: [/media/usb/sdc3] - [007][sdc3]...
Creating directory under: [/media/usb/sdc4] - [008][sdc4]...
Creating directory under: [/media/usb/sdc1] - [009][sdc1]...
Creating directory under: [/media/usb/sdc2] - [010][sdc2]...
Creating directory under: [/media/usb/sdc3] - [011][sdc3]...
Creating directory under: [/media/usb/sdc4] - [012][sdc4]...
Creating directory under: [/media/usb/sdc1] - [013][sdc1]...
Creating directory under: [/media/usb/sdc2] - [014][sdc2]...
Creating directory under: [/media/usb/sdc3] - [015][sdc3]...
Creating directory under: [/media/usb/sdc4] - [016][sdc4]...
Creating directory under: [/media/usb/sdc1] - [017][sdc1]...
Creating directory under: [/media/usb/sdc2] - [018][sdc2]...
Creating directory under: [/media/usb/sdc3] - [019][sdc3]...
Creating directory under: [/media/usb/sdc4] - [020][sdc4]...

If you want to know all devices that are USB, check this link: http://stackoverflow.com/questions/6...s-a-usb-device

I hope it helps!
# 7  
Old 11-18-2011
GREAT felipe Smilie,

it works for me.

could you please help to insert a pause command?
I need to plug another four usb stick ~ Smilie

Code:
Press any key to start!

Formatting usb disk: [/dev/sdc1]
Mounting disk: [/dev/sdc1] under: [/media/usb/sdc1]
Formatting usb disk: [/dev/sdc2]
Mounting disk: [/dev/sdc2] under: [/media/usb/sdc2]
Formatting usb disk: [/dev/sdc3]
Mounting disk: [/dev/sdc3] under: [/media/usb/sdc3]
Formatting usb disk: [/dev/sdc4]
Mounting disk: [/dev/sdc4] under: [/media/usb/sdc4]
Creating directory under: [/media/usb/sdc1] - [001][sdc1]...
Creating directory under: [/media/usb/sdc2] - [002][sdc2]...
Creating directory under: [/media/usb/sdc3] - [003][sdc3]...
Creating directory under: [/media/usb/sdc4] - [004][sdc4]...
[NEED A PAUSE for replace new usb]
Creating directory under: [/media/usb/sdc1] - [005][sdc1]...
Creating directory under: [/media/usb/sdc2] - [006][sdc2]...
Creating directory under: [/media/usb/sdc3] - [007][sdc3]...
Creating directory under: [/media/usb/sdc4] - [008][sdc4]...
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