Stack Exchange Network

Stack Exchange network consists of 175 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers.

Visit Stack Exchange

Questions tagged [verification]

The tag has no usage guidance.

0
votes
1answer
48 views

PureOS verification of download

PureOS has SHA256 verification of download, but I've heard that SHA isn't so secure. Do they sign their files or provide associated .sig files? And is it true that that would be more secure?
0
votes
0answers
14 views

Update an existing SFV file using CFV

I have an existing sfv file generated using cfv -C -tsfv -rr Now how would I update this file when there are new files added to the directory? Re-generating the whole thing will take a long time (an ...
1
vote
1answer
40 views

Verification of packages in a local mirror

Packages for several BSD and Linux operating systems / distributions are downloaded over a potentially insecure connecting or are later on replaced with a malicious version on the local disk. The ...
1
vote
1answer
247 views

What happened to elfsign and elfverify?

In "Uninformed Research -- informative information for the uninformed." 2003 mentions a tool called elfsign and elfverify. This is a tool to checksum and sign an ELF binary. I can't find that tool in ...
1
vote
0answers
390 views

How do I verify linux kernel signature with gpg?

Following the notes at the kernel.org site, but I cannot seem to verify the signature of the kernel. I tried to use the given script to handle it for me, but that has failed too. user@localhost ~ $ ...
1
vote
1answer
135 views

How do I verify https://files.devuan.org/devuan-devs.gpg

I am running Devuan Jessie. I want to install another Devuan Ascii from scratch. So I downloaded: https://files.devuan.org/devuan_ascii/installer-iso/devuan_ascii_2.0.0_amd64_netinst.iso https://...
0
votes
2answers
65 views

One line read verification [closed]

I have this read operation: read -p "Please enter your name:" username How could I verify the users name, in one line? If it's not possible in a sane way in one line, maybe a Bash function putted ...
-2
votes
1answer
281 views

How to check email mailbox in min time?

I am trying to verify emails which is over 70 lac. I am using the this script But it is taking approx 2-3 min for one email. Since I try other code, but all are using the same method. So I am ...
0
votes
3answers
459 views

Is there a `cp` like command for verifying data and removing files?

I have some photo files on my phone, and I am backing them up to an external drive. (Everything is mounted on a linux laptop.) I have copied the files, when I should really have mv'ed them. However, ...
3
votes
2answers
2k views

How to checksum a CD/DVD? (to verify integrity of my Debian installation)

So I'd like to checksum my Debian 9.0 installation DVD to be able to compare it to the respective .iso file's hashes and the published hashes to be able to verify my installation's integrity. I ...
15
votes
5answers
5k views

Does dd do any kind of verification?

I'm using dd to copy data from an old hard drive to a new one. I want to be sure that the data's integrity is secure. On this answer, Gilles says If [dd] terminated successfully, then the backup ...
0
votes
2answers
1k views

Will apt-get dist-upgrade -y confirm updates with verification issues?

I would like to have chron run my updates periodically and I have been told that the command: apt-get dist-upgrade -y should accept the updates. My concern is that numerous times when manually ...
3
votes
0answers
1k views

Should double-bounce@mydomain.com be a valid email address?

Our postfix setup uses recipient address verification. Obviously, postfix uses for this process a special email address, defined right here. $ /usr/sbin/postconf | grep double_bounce_sender ...
2
votes
2answers
1k views

Stunnel: How to ignore the cert expiry date

I would like to setup stunnel but the certificate from my other tunnel is expired. How would I tell stunnel to ignore verification of expiry date of the certificate coming from stunnel client mode to ...
6
votes
3answers
8k views

How to check if a video is completely downloaded?

I have a bunch of videos which I want to check if they are complete or not. Some of them may be downloaded partially, but they are not faulty. How can I efficiently check if these video are completely ...
4
votes
1answer
76 views

LXC: Are downloaded templates verified?

Debian 8.3, LXC 1:1.0.6-6+deb8u2 When LXC downloads the base packages for a Debian container, are the packages verified? Verifying a Debian CD involves comparing signed checksum files against the ...
2
votes
1answer
1k views

How to verify debian cds with gpg?

I have downloaded Debian installation iso from http://cdimage.debian.org/debian-cd/current/amd64/iso-dvd/. I have also downloaded the MD5SUMS and MD5SUMS.sign . I verified the md5sum of iso matches ...
2
votes
1answer
203 views

Re-setting perms on RPM's does not seem to work

I am using RPM for file verification. What I do is run rpm -Va to get a list of files that have been changed. Then I run rpm -qf to get the package name the file belongs to. Finally I run rpm -...
3
votes
1answer
523 views

Generate SFV file, optimizing hard links

I'm currently running cfv -C -rr to generate a SFV file that contains the CRC32 checksums of all files in all subdirectories. The issue is that because there are so many hardlinks, this process is ...
1
vote
2answers
3k views

Host key verification failed.#015

I am trying to execute a script on a remote computer. Lets call this (Secondary), the script is as follows, for simplicity porposes, #!/bin/bash echo "This is the Remote Machine (Secondary)" > /...
1
vote
0answers
2k views

How to compare file sizes in two directories?

I have copied some files to an SFTP-only server. I want to verify that all the files arrived intact. Since the server is SFTP-only, I cannot run e.g., an MD5sum on the remote host. I have the server ...
1
vote
1answer
378 views

apt-get update: How to check for GPG errors when using scripts?

When running. sudo apt-get update For example something like this could happen. W: GPG error: http://deb.torproject.org wheezy Release: The following signatures were invalid: KEYEXPIRED 1409325681 ...
3
votes
2answers
110 views

Identify lines that are out of order

I have a process that generates output mostly in lexicographically sorted order according to a (timestamp) field, but occasionally the lines will be output in the wrong order: 2014-08-14 15:42:02....
2
votes
1answer
1k views

How to verify a file automatically over sftp?

I am trying to create a cron job to perform backup of a server over the internet using sftp. But before the actual backup is performed, I would like to verify that the server is connecting to the ...
1
vote
2answers
2k views

Extract TAR to SD-Card and verify contents afterwards

We currently extract a TAR archive to a SD-Card like this tar xf ${ROOT}/rootfs.tar -C /cynox/${DRIVE}/${TARGET} As a side note: The rootfs.tar contains files for an embedded Linux system. Some of ...
1
vote
1answer
2k views

postfix configuration to verify all recipients

I have a mail server that should receive all mails, even if no user exists. My big problem is the: Postfix Address Verification like mentioned here: http://www.postfix.org/ADDRESS_VERIFICATION_README....
4
votes
1answer
695 views

How to figure out GRUB2's menu output

I have just updated a remote machine which is running Ubuntu Server 12.04. I have only access through SSH and now it's asking for a reboot. I'm guessing a new kernel was installed. I need to make it ...
0
votes
1answer
144 views

Cent OS 6.3 Hidden files in shell

I want to be able to check whether a file is hidden or not in Cent OS 6.3. These are often referred to as (dot) files but I can clearly see Cent OS 6.3 handling these by appending a ~(tilde) to the ...
63
votes
5answers
61k views

Does rsync verify files copied between two local drives?

I want to make a fresh new copy of a large number of files from one local drive to another. I've read that rsync does a checksum comparison of files when sending them to a remote machine over a ...
10
votes
5answers
7k views

Is there MD5 (or similar) to a folder? How to verify if two folders are equal?

I'd like to find an md5sum (or similar calculation) of a folder without compressing it into an archive. For example, if in the folder MyFolder we have the files 1.txt, 2.txt and 3.txt, containing: 1....
1
vote
3answers
236 views

Tool to remove all non-package files on a system

If you want to keep for example a build or server system clean, it is very useful to be able to check that all files are present and accounted for by the package metadata. At work we have a very nice ...