Hi all:
I have a file in which the contents are as following:
...
This is a test
ONE
TWO
Hello, world!
XXX YYY CCC
test again
three, four
five
six
seven
world
AAA BBB QQQ
test
eight, nine
world (3 Replies)
i have some commands written line by line in one flat file
i have to read each linefrom this file(file name passed as parameter)
and then i have to execute this
How can i do it? (2 Replies)
I'm sure this will be an easy question for you experts out there, but I have been searching the forum and working on this for a couple hours now and can't get it right.
I have a very messy data file that I am trying to tidy up - one of the issues is some records are split into multiple lines: ... (4 Replies)
Hi
I have the fixed width flat file having the following data
12345aaaaaaaaaabbbbbbbbbb
12365sssssssssscccccccccc
12365sssss
12367ddddddddddvvvvvvvvvv
12367 vvvvv
Here the first column is length 5 second is length 10 third is length 10
if the second or third column exceeds... (3 Replies)
Hi Friends
I have a flat file which has sentence like "Notice generated". It can be anywhere in the flat file.
What I want to do is, I want to delete all the lines which are above sentence "Notice generated".
How can I do it.
Kindly advice.
Anushree (5 Replies)
I've hunted and hunted but nothing seems to apply to what I need. Any help will be much appreciated!
My input file looks like (Unix):
marker,allele1,allele2
RS1002244,1,1
RS1002244,1,3
RS1002244,3,3
RS1003719,2,2
RS1003719,2,4
RS1003719,4,4
Most markers are listed 3 times but a few... (2 Replies)
I've been a Unix admin for nearly 30 years and never learned AWK. I've seen several similar posts here, but haven't been able to adapt the answers to my situation. AWK is so damn cryptic! ;)
I have a single file with ~900 lines (CSV list). Each line starts with an ID, but with different stuff... (6 Replies)
Hi guys,
So i have a input file with several sequences aligned (fasta)
>NC_005930 241 bp
MNMINIFIINNIFDQFIPVKLSIFSLTSVGSIIA
LSWVWINTKTHWAISRSNTP-SLLLNSL
WTLLITNL-NEKTNPWAPWLFSLFLLCFSFNIMSLI-PYTF-SQ
TSHLSFTFGLSLPIWIMVNIAGFKNNWKKKISHLLPQGTPIYLVPVMII
IETISLFIQPLTLGFRLGANLLAGHLLIFLCSCTIWE... (6 Replies)
:confused:Hello -- i just joined the forums. I am a complete noob -- only about 1 week into learning how to program anything... and starting with linux.
I am working in Linux terminal.
I have a folder with a bunch of txt files. Each file has several lines of html code. I want to combine... (2 Replies)
Hi all, I'm relatively new to scripting, I can do pretty basic things. I have a daily log file that looks like:
timestamp=2017-06-28-01.01.35.080576;
event status=0;
userid=user1;
authid=user1;
application id=10.10.10.10.11111.12345678901;
application name=GUI;
... (29 Replies)
Discussion started by: dwdnet
29 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)