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J'e's questions

Martin Hope
J'e
Asked: 2022-11-30 09:38:42 +0800 CST
  • 5

How do I get the username from within a script that was called with sudo? In other words, I don't want root but the actual username.

echo_user.sh

#!/usr/bin/env bash

echo whoami

Calling the script from user pikachu, I would expect it to print pikiachu and not root.

sudo ./echo_user.sh

There are lots of post from around 7 to 12 years ago with this exact question. None of them seem to work on Ubuntu 22.x. I'm simply trying to get the name of the user that called a script with sudo. Most of the old examples reference SUDO_USER but the only way I've been able to get it to work is by running sh -c 'echo $SUDO_USER'. echoing SUDO_USER from a script shows it's undefined.

command-line
Martin Hope
J'e
Asked: 2018-07-20 14:00:07 +0800 CST
  • 0

I have 2 3.5" WD20EARS disks. durring a format/wipe, there was a power failure and now i'm unable to access either disk. I would normally think that it's just a dead disk but since it happened on both, I doubt it.

SMART results say that both disks are OK

Here are a few things I've tried.

  • parted

    $ parted /dev/sdf
Warning: Error fsyncing/closing /dev/sdf: Input/output error

  • fdisk

    $ fdisk /dev/sdd
Welcome to fdisk (until-linux 2.31.1).

fdisk: cannot open /dev/sdf: Input/output error

  • formatting using the graphical ubuntu disk utility

    Error wiping device: Failed to probe the device '/dev/sdf' (udisks-error-quark, 0)

  • fsck

    $ fsck/dev/sdf

fsck.ext2: Input/output error while trying to open /dev/sdf

  • ddrescue this is able to read the disk but I don't really care about the data on this drive, I just want it working again.

  • hdparm

    $ hdparm --verbose --write-sector 3907029168 --yes-i-know-what-i-am-doing /dev/sdf
re-writing sector 3907029168:

    I don't actually know what I'm doing with this one :p It's not erroring out but I'm not sure it's actually doing anything.

:::EDIT::: hdparm finally finished. here are the results,

sudo hdparm --verbose --write-sector 3907029168 --yes-i-know-what-i-am-doing /dev/sdf

/dev/sdf:

APT: No idVendor found -> not USB bridge device

re-writing sector 3907029168: 

oflags.bits.lob_all=0xfc, flags={ nsect lbal lbam lbah dev command }

oflags.bits.hob_all=0x3c, flags={ nsect lbal lbam lbah }

using LBA48 taskfile

outgoing cdb:  85 0b 06 00 00 00 01 e8 b0 00 88 00 e0 e0 34 00

outgoing_data:  00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00

SG_IO: ATA_16 status=0x2, host_status=0x0, driver_status=0x8

SG_IO: sb[]:  70 00 05 00 00 00 00 0a 10 51 e0 01 21 00 00 00 a0 b0 00 00 00 00 00 00 00 00 00 00 00 00 00 00

SG_IO: bad/missing sense data, sb[]:  70 00 05 00 00 00 00 0a 10 51 e0 01 21 00 00 00 a0 b0 00 00 00 00 00 00 00 00 00 00 00 00 00 00

SG_IO: desc[]:  10 51 e0 01 21 00 00 00 a0 b0 00 00 00 00 00 00 00 00 00 00 00 00

ATA_16 stat=00 err=01 nsect=00 lbal=00 lbam=b0 lbah=00 dev=00

succeeded

I says succeeded, but nothing appears to have changed

partitioning hard-drive fdisk io