Sorry if this has been posted before, I searched but not sure what I really want to do.
I have a file with records that show who has logged into my application:
2003-03-14:I:root: Log_mesg: registered servername:userid. (more after this)
I want to pull out the userid, date and time into... (2 Replies)
Hi all,
I have a flatfile
I would like to get ext = 7950 , how do I do that ?
if ($1 == "CTI-ProgramStart") {
ext = substr($9,index($9,"Extension")+11,4);
But why it is not working ???? Please help .
Thanks (1 Reply)
i have a variable 200612
the last two digits of this variable should be between 1 and 12, it should not be greater than 12 or less than 1 (for ex: 00 or 13,14,15 is not accepted)
how do i check for this conditions in a unix shell script.
thanks
Ram (3 Replies)
Hi
I have multiple files that name begins bidb_yyyymm. (yyyymm = current year month of file creation).
What I want to do is look at the files and where yyyymm is older than 1 month I want to remove the file from the server.
I was looking at looping through the files and getting the yyyymm... (2 Replies)
I am running AIX 5.3 using the Korn Shell. I am reading file names from a file, as an example:
E0801260
E0824349
E0925345
EMPMSTR
statement "num=$(expr substr "$DDNAME" 4 2)
extracts the numeric values fine. But when I het the last entry, it returns num=MS, but I get an error... (19 Replies)
I have the following to find lines matching "COMPLETE" and extract parts of it using substr.
sed -n "/COMPLETE/p" 1.txt | awk 'BEGIN { FS = "\" } {printf"%s %s:%s \n", substr($3,17,3),substr($6,4,1), substr($7,4,1)}' | sort | uniq > temp.txt
Worked fine until the numbers in 2nd & 3rd substr... (5 Replies)
Hi to all,
I'm here again, cause I need your help to solve another issue for me.
I have some files that have this name format: date_filename.csv
In my shell I must rename each file removing the date so that the file name is filename.csv
To do this I use this command:
fnames=`ls ${fname}|... (2 Replies)
Hello life savers!!
Is there any way to use substr in awk command for returning one part of a string from declared start and stop point?
I mean I know we have this:
substr(string, start, length)
Do we have anything like possible to use in awk ? :
substr(string, start, stop)
... (9 Replies)
Hi,
- In a file test.wmi
Col1 | firstName | lastName
4003 | toto_titi_CT- | otot_itit
- I want to have only ( colones $7,$13 and $15) with code 4003 and 4002. for colone $13 I want to have the whole name untill _CT- or _GC-
1- I used the command egrep with awk
#egrep -i... (2 Replies)
Hello All;
I have an input file 'abc.txt' with below text:
512345977,213458,100021
512345978,213454,100031
512345979,213452,100051
512345980,213455,100061
512345981,213456,100071
512345982,213456,100091
512345983,213457,100041
512345984,213451,100011
I need to paste the first field... (10 Replies)
Discussion started by: mystition
10 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)