Unix and Linux Stack Exchange
Unix and Linux Stack Exchange

Questions tagged [verification]

43 questions
103
votes
7 answers

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 network. Will rsync make the comparison when copying…
Frez
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21
votes
5 answers

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 is correct, barring a hardware fault… What does that…
Sparhawk
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14
votes
3 answers

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 downloaded? If I had the links, I would have…
Ho1
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13
votes
5 answers

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.txt The text into 1.txt 2.txt The text into…
GarouDan
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4
votes
1 answer

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 boot in a very specific kernel, otherwise it will…
Savir
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4
votes
2 answers

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 burned the Debian installation .iso to DVD under…
mYnDstrEAm
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4
votes
0 answers

Should [email protected] be a valid email address?

Our postfix setup uses recipient address verification. Obviously, postfix uses a special email address for this process, defined right here. $ /usr/sbin/postconf | grep double_bounce_sender address_verify_sender =…
Jürgen Gmach
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4
votes
1 answer

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 checksum of the downloaded file (and also that the…
Toby
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3
votes
2 answers

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 the stunnel server mode?
Mark Shine
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3
votes
1 answer

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 the entry present in MD5SUMS . Now I want to…
Bharat G
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3
votes
1 answer

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 taking much longer than it should take. Is there any…
user115746
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3
votes
2 answers

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 15:42:02.019220203 ok 2014-08-14 15:42:03.523164367…
ecatmur
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2
votes
1 answer

How to verify fstab concisely?

I have been using the following command so far to verify my /etc/fstab: sudo findmnt --verify Unfortunately, it spills out warnings for each unreachable disk (which I don't care about) and I have not found a flag to change that. Any clever tip to…
xeruf
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2
votes
1 answer

How do I verify the certificate of a specific computer when the DNS gives me one of many IP addresses?

I have a cloud setup with 6 front end computers using Apache. I installed a new SSL certificate. Now I want to verify that all the machines have the certificate. The problem is if I just use https://www.example.com/ the IP address is going to be…
Alexis Wilke
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2
votes
0 answers

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 ~ $ sh ./get-verified-tarball 4.14.68 Using…
Jon
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