using
Ubuntu 20.04.4 LTS (Focal Fossa)
GNU bash, version 5.1.16(1)
List all drives: UNmounted and mounted
lsblk --noheadings --raw | awk '{print substr($0,0,4)}' | uniq -c | grep 1 | awk '{print "/dev/"$2}' ;
/dev/loop
/dev/sda
/dev/sda1
/dev/sda2
/dev/sda5
/dev/sdb
/dev/sdb1
/dev/sdc
/dev/sdd
/dev/sdd1
From above bash, we have 2 usb sticks c and d as:
/dev/sdc
FAT (32-bit version)
/dev/sdd
/dev/sdd1
FAT (32-bit version)
How come sdd has 2 entries?
/dev/sdd
/dev/sdd1
FAT (32-bit version)
How to format usb sdc
to get 2 entries like sdd
above?
Why?
Because it seems that 2 entries behaves better for
UNmounting usb manually via DISKs and
mounting usb via a bash script below.
Show UNmounted drives and Show Extended Partition Types:
lsblk --noheadings --raw -o NAME,MOUNTPOINT | awk '$1~/[[:digit:]]/ && $2 == ""' ;
Show stats: UNmounted drives and Extended Partition Type:
lsblk --noheadings --raw | awk '$1~/s.*[[:digit:]]/ && $7==""' ;
Mount drives via bash. Then do virus scanning:
lsblk --noheadings --raw | awk '{print substr($0,0,4)}' | uniq -c | grep 1 | awk '{print "/dev/"$2}' | grep -E "(/dev/sd.)[[:digit:]]" | xargs -I{} -n1 udisksctl mount -b {} ;
Mounted /dev/sdd1 at /media/u3/USBstick
/dev/sdc
FAT (32-bit version)
is manually UNmounted and
above bash script does not mount /dev/sdc
/dev/sdd
/dev/sdd1 FAT (32-bit version)
is manually UNmounted and
above bash script works.
Mounts sdd
Target is to have bash script mount all drives before a virus scan.
Explain.
Why sdc
is only 1
entry versus 2
for sdd
?
/dev/sdc
FAT (32-bit version)
/dev/sdd
/dev/sdd1
FAT (32-bit version)
Explain.
How to format sdc
?
So sdc
responds to above bash mount script
like sdd
responds.
--
sdd
is a whole block device.sdd1
is the first partition within the device. See a table in this answer. A setup where there is no partition table and a filesystem takes the whole device is called "superfloppy". See this question: Uses of single-partition disk configuration. The fact you and your script are confused kinda confirms what I said in my answer there.sdc
meaningsdc1
is absent . 2. Format usb bysudo mkfs.vfat /dev/sdc
results with messagemkfs.fat 4.1 (2017-01-24)
andmkfs.vfat: unable to open /dev/sdc: No medium found
. How to format usb? to reach the targetsdc
withsdc1
being the first partition within the device. i understand 'Programs may expect a partition table first, a filesystem later.' i understand this means the mount script expectssdc
with partitionsdc1
.$ lsblk -o PATH
replaces most parts of your initial thing ending in "awk".$ lsblk -o PATH
works, meaning, List all drives: UNmounted and mounted, but 16 items were Listed and are of no interest, being/dev/loop0
to/dev/loop15
. The first script of 102 characters shortens uninteresting data to 1 item/dev/loop
. i read/dev/loopX
are virtual devices, read only, connected to the snapd service, extra loop devices added for every software you install using "snap" and/dev/loopX
can be removed by uninstalling the app via snapd. Any ideas how to format usb? to getsdc
andsdc1
.