Hi all,
Can anyone provide me any checklists or a list of steps I should follow before executing my scripts.
Could also tell me if there are any other standards to be followed while shell programming like naming conventions for variables etc.
Your help would be much appreciated.
Regards,... (2 Replies)
Below is a description of what im trying to achieve:
Write a shell script to concatenate lists together, and output the resulting list. Do not include any argument that is a sub-list of the entire list. (The script will clean the list of any redundant items.) You must preserve the original order... (1 Reply)
Hi, I need a script that will:
1. Go through about 20 different folders, each containing about 20 1d files. The 1d files go something like this:
22.253 37.707 78.117 112.374 127.944 156.067 180.956 233.785 249.256 ... (1 Reply)
Hello Unix Gurus,
I have:
A list of parameters that repeat (in .txt file)
Example: params.txt
Series: XYZ
Manufacturer: ...
Software Version: ...
Year made: ...
Series Series: XYZ
Manufacturer: ...
Software Version: ...
Year made: ...
Series Series: ABC
Manufacturer: ...
... (7 Replies)
Hi,
I do little bash scripting so sorry for my ignorance.
How do I compare if the two variable not match and if they do not match run a command.
I was thinking a for loop but then I need another for loop for the 2nd list and I do not think that would work as in the real world there could... (2 Replies)
Hello, I'm trying to write a script which is listing files based on different preferences, like filetype or permissions. All is fine, except for one: I want to list files in /home which has a different owner than the home directory it is in.
Here is an example:
/home/UserA is the directory, and... (10 Replies)
I expert,
I may cross post something similar but I dirtyed my quesion somehow to be clear in the thread
#cat file1
88dee gcc: Grok for callconvention-hard to enable hard float
a2ad2 eglibc: package mtrace separately
61487 python: bump PR of packages after update of distutils.bbclass... (1 Reply)
I have a file which has connections given as:
A B 0.1
B C 5.8
C B 5.8
E F 0.67
B A 0.1
A B and B A are same, so I want to remove one of them. Same with BC and CB.
Desired output:
A B 0.1
B C 5.8
E F 0.67 (2 Replies)
I have a script that sorts and processes unsorted files to newly created directories.
Its working great, but I am trying to understand the leanest method to get the script to create an additional file within each newly created directory that:
Contains a list of all files in the directory... (4 Replies)
Discussion started by: Braveheart
4 Replies
LEARN ABOUT CENTOS
tpm_quote_tools
TPM QUOTE TOOLS(8) TPM QUOTE TOOLS(8)NAME
TPM Quote Tools
PROGRAMS
tpm_mkuuid, tpm_mkaik, tpm_loadkey, tpm_unloadkey, tpm_getpcrhash, tpm_updatepcrhash, tpm_getquote, tpm_verifyquote
DESCRIPTION
TPM Quote Tools is a collection of programs that provide support for TPM based attestation using the TPM quote operation.
A TPM contains a set of Platform Configuration Registers (PCRs). In a well configured machine, some of these registers are set to known
values during the boot up process or at other times. For example, a PCR might contain the hash of a boot loader in memory before it is
run.
The TPM quote operation is used to authoritatively verify the contents of a TPM's Platform Configuration Registers (PCRs). During provi-
sioning, a composite hash of a selected set of PCRs is computed. The TPM quote operation produces a composite hash that can be compared
with the one computed while provisioning.
To use the TPM quote operation, keys must be generated. During provisioning, an Attestation Identity Key (AIK) is generated for each TPM,
and the public part of the key is made available to entities that validate quotes.
The TPM quote operation returns signed data and a signature. The data that is signed contains the PCRs selected for the operation, the
composite hash for the selected PCRs, and a nonce provided as input, and used to prevent replay attacks. At provisioning time, the data
that is signed is stored, not just the composite hash. The signature is discarded.
An entity that wishes to evaluate a machine generates a nonce, and sends it along with the set of PCR used to generate the composite PCR
hash at provisioning time. For this use of the TPM quote operation, the signed data is ignored, and the signature returned is used to val-
idate the state of the TPM's PCRs. Given the signature, the evaluating entity replaces the nonce in the signed data generated at provi-
sioning time, and checks to see if the signature is valid for the data. If so, this check ensures the selected PCRs contain values that
match the ones measured during provisioning.
A typical scenario for an enterprise using these tools follows. The tools expect AIKs to be referenced via one enterprise-wide Universally
Unique Identifier (UUID). The program tpm_mkuuid creates one.
For each machine being checked, an AIK is created using tpm_mkaik. The key blob produced is bound to the UUID on its machine using
tpm_loadkey. The public key associated with the AIK is sent to the entities that verify quotes. Finally, the expected PCR composite hash
is obtained using tpm_getpcrhash. When the expected PCR values change, a new hash can be generated with tpm_updatepcrhash.
The program to obtain a quote, and thus measure the current state of the PCRs is tpm_getquote. The program that verifies the quote
describes the same PCR composite hash as was measured initially is tpm_verifyquote.
SEE ALSO tpm_mkuuid(8), tpm_mkaik(8), tpm_loadkey(8), tpm_unloadkey(8), tpm_getpcrhash(8), tpm_updatepcrhash(8), tpm_getquote(8), tpm_verifyquote(8)
Oct 2010 TPM QUOTE TOOLS(8)