Hi I'm in the need of a script that basically takes two files and generates a 3rd. It reads from fileA and fileB and copies lines from fileA if they start by a word of fileB.
for example
fileA
The dog is beautful
Where is your cat
Why are you sad?
Help me!
fileB
The
Where
tree
dog... (4 Replies)
I have one request, First it has to create one file and in that file
it has to include some lines based on user request.
Suppose user requested 10, then script needs to add 10 lines like below
QAEVO_A1|A1
QAEVO_A2|A2
QAEVO_A3|A3
QAEVO_A4|A4
QAEVO_A5|A5
QAEVO_A6|A6
QAEVO_A7|A7... (8 Replies)
I did a search before posting and couldn't find an example of what I need done. Anyway, I have a file called file1.txt, which has data like this:
File2.txt contains:
So what I need to do is from file1.txt find the first line M977 in file2.txt and replace the line below it with the line from... (4 Replies)
I am new to Linux and have a challenging task.
I have 3 data files, and need to do the following:
Go to line 31 of file 1, delete it
Read 1 line from file 2 and add in place of deleted line
Go to line 97 of file I delete it and then read the line 1 from file 2 and add in place of that... (2 Replies)
Hello All,
I want to copy some lines from one file to other with following condition.
Only lines between two specified strings should copy.
Example :-
"My First String "
Some_Other_String ....
Some_Other_String ....
Some_Other_String ....
"My Second String"
So only... (5 Replies)
Hi I want to find out those unique uids from the log file which have request and response.
The log file format is as follows. This log has other irrelevant lines too but each uid should have request and reponse, I need those uids only
2013-04-03 10:51:01,808 INFO <?xml version="1.0"... (4 Replies)
Hi all
I have a requirement
I need to copy only first 2 lines from a file of one location to another file of same location
I used to code as
cp head -2 abc 123
But i get the following error
cp: 0653-437 123 is not a directory.
The files used are
cat abc
ABCD
EFDG
TYUI (5 Replies)
Discussion started by: Priya Amaresh
5 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)