Hi I would like to run the diff command and recieve a little different output. I am on a linux machine. I am pretty new to shell scripting. So far my idea has shaped up to this, unworking, script. I would like file1: and file2: instead of the usual > or < output you recieve,
diff | sed -e ... (4 Replies)
Hi,
I want to know whether it is possible to to execute the below script like
ksh ds.ksh <input file> > <output file> or any other simple way other then ./
The way i'm executing it right now is
nawk -f ds.ksh <input file> > <output file>.
I need the first format as my ETL tools is... (3 Replies)
diff -yta file1 file2
#!/usr/abc/b/bin/perl5.6 | #!/usr/abc/b/bin/perl5.8
Notable thing about above line is "|" appears at 62nd position. When the same line is assigned in a variable in a ksh script, using
ss=$(diff -yta file1 file2)
it appears as ... (4 Replies)
Hi all ,
i am trying to calculate time difference btw the script execution
I am using solaris
start_time=`date +%s`
sleep 2
end_time=`date +%s`
duration=`expr $end_time - $start_time`
when i try to subtract i get the error
line 13: %s - -time : syntax error: operand expected... (3 Replies)
Hi ALL
I have a shell script named setUP in which i am sourcing one variable like
source var_name="CLASSPATH".
When i call it as ./setUP, it does not set the var_name variable. But when i call it like . ./setUP then var_name is set up. What is the difference between this two calls?
... (1 Reply)
Hi ALL
I have a shell script named setUP in which i am sourcing one variable like
source var_name="CLASSPATH".
When i call it as ./setUP, it does not set the var_name variable. But when i call it like . ./setUP then var_name is set up. What is the difference between this two calls?
... (2 Replies)
Hi,
I am new to shell scripting.
please help me to find out the solution.
I need a script where we need to read the text file(consists of all file names) and get the file names one by one
and append the date suffix for each file name as 'yyyymmdd' .
Then search each file if exists... (1 Reply)
Hi Friends Need your expertise.
Command to check the difference and compare 2 files and remove lines . example
File1 is master copy and File2 is a slave copy . whenever i change, add or delete a record in File1 it should update the same in slave copy . Can you guide me how can i accomplish... (3 Replies)
HI All,
I am new to Unix shell scripts..
Could you please post the unix shell script for for the below request.,
There are two different tables(sample1, sample2) in different schemas(s_schema1, s_schema2).
Unix shell script to compare the columns of two different tables of two... (2 Replies)
Discussion started by: Rajkumar Gopal
2 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)