Hi all,
I have a issue... Is it possible to compare integer value with decimal value.
If it is not possible,then how can i compare 2 decimal values in born shell.thanks! (3 Replies)
Hi All,
i am doung sup up of amount column in my file.
tot_val=`awk '{a+=$0}END{printf "%.5f\n",a}' amount`
then i have a checksum in footer.
chk_sum=`tail -1 $FILE_NAME | cut -d~ -f7 | cut -c2-`
but the problem is while executing 1st command i am getting :
27720.75000
& while... (3 Replies)
How can I compare two integer values which is stored in char pointers?
suppose I have char *a and char *b having values 10 and 20. how can i find the shorter value? (1 Reply)
Please see how can I do this:
File A (three columns):
X1,Y1,1.01
X2,Y2,2.02
X3,Y3,4.03
File B (three columns):
X1,Y1,1
X2,Y2,2
X3,Y3,4.0005
Now I have to compare file A and B based on the integer part of column 3. Means first 2 rows should be OK and the third row should not satisfy... (12 Replies)
i need to do camparisions like the below.
For the case when first=10 and second=9.9 the scripts displays process failed.
I need to be able to convert the values to integer before doing the comparision.
Like 9.9 should be rounded over to 10 before doing comparision.
Please advice how can... (3 Replies)
I am running some commands and I am trying to get an output into a variable. I am having problem when I try to put that value in while loop, it says integer value expected. What's the best way to accomplish this
remaining=$(symclone -sid XXX -f Clone_test query | grep MB | awk '{print... (1 Reply)
I am on HP-UX using ksh in the script.
MaxSal=`sqlplus -silent /nolog <<EOF
connect / as sysdba
whenever sqlerror exit sql.sqlcode
set pagesize 0 feedback off verify off heading off echo off
select max(sal) from emp1;
select max(sal) from emp2;
select max(sal) from emp3;
exit;
EOF`... (3 Replies)
Hi,
0.23 2.94% 0.00 0.00% 17.8G 55.7% 19.6G 40.9% 630 0.00%
0.06 0.77% - - 7524M 22.9% 15.6G 32.6% - -
From the above sample output. I need to compare whether the 6th field is more than 10G..if so print the entire line. Here the 6th field is memory
TIA (5 Replies)
Discussion started by: Sumanthsv
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)