01-24-2012
Quote:
Originally Posted by
strawhatluffy
thank you very much!!!
ah!i think i've seen this command again but instead of '2s' was "1.5s"
is this possible?
That sounds something more like what you'd find in printf than sed. I don't think it makes sense here.
This User Gave Thanks to Corona688 For This Post:
10 More Discussions You Might Find Interesting
1. UNIX for Dummies Questions & Answers
hi, I'm completely new to FreeBds or unix in general, is there a really nice site to teach you the basic ommands to free BSD.
I don't know what to do. =( (3 Replies)
Discussion started by: Special K
3 Replies
2. Shell Programming and Scripting
anyone know the command to display the ten most common words, together with their number of occurences, in the manual entry for the ls command. It would be much useful (1 Reply)
Discussion started by: master_6ez
1 Replies
3. Programming
Hello all,
i've written a small piece of code that will read commands from standard input and executes the commands.
Its working fine and is execting the commands well. Accepting arguments too. e.g
#mkdir <name of the directory>
The problem is that its not letting me change the directory i.e... (4 Replies)
Discussion started by: Phrozen Smoke
4 Replies
4. Shell Programming and Scripting
I want to log into a remote server transfer over a new config and then backup the existing config, replace with the new config.
I am not sure if I can do this with BASH scripting.
I have set up password less login by adding my public key to authorized_keys file, it works.
I am a little... (1 Reply)
Discussion started by: bash_in_my_head
1 Replies
5. AIX
Hi all,
I'm new in this forum.
I'm looking for the difference between the HACMP commands with the prefix "cl" and "cli".
The first type are under /usr/es/sbin/cluster/sbin directory and the second are under /usr/es/sbin/cluster/cspoc directory.
I know that the first are called HACMP for AIX... (0 Replies)
Discussion started by: peppix
0 Replies
6. UNIX for Advanced & Expert Users
Hi all,
Im a newbie in Centos 5.8
What had i typed was "export PATH=/sbin/service"
and now my command like ls, touch, mv, useradd, mysqldump, and more have gone..
anyone know how to solve it? (1 Reply)
Discussion started by: yjk2121
1 Replies
7. UNIX for Dummies Questions & Answers
I'm trying to figure out certain commands for these steps. If you wish to discuss with me in real time, PM me your AIM or MSN, thanks. Here are the steps.
Edit the readcal_final file
Delete all of the lines that comprise the colandar portion of the memo
Without leaving vi, open a new... (0 Replies)
Discussion started by: vgmaster9
0 Replies
8. UNIX for Dummies Questions & Answers
How can I find a list of shortcut commands I can execute within vi using the % indicator?
For example, I can vi a file, press colon, and then type "%s/\r//g" to remove all instances of a carriage return. What else can be executed from the % prompt and what are the shortcut letters (I could type... (4 Replies)
Discussion started by: MaindotC
4 Replies
9. Shell Programming and Scripting
So I need a way to list all files that contain 4 letters.
Also separately I need to find a way to list all files with l or n as the third letter of the name.
I need to use the ls command and/or grep/egrep.
Any help would be a appreciated. (2 Replies)
Discussion started by: muttfacejohnson
2 Replies
10. Homework & Coursework Questions
Use and complete the template provided. The entire template must be completed. If you don't, your post may be deleted!
1. The problem statement, all variables and given/known data:
If the user enters option 1, your program should display the list of entries in the current
directory. For... (1 Reply)
Discussion started by: UniverseCloud
1 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)