Thanks, but this command replaces each space/tab with a delimiter which i dont expect. And i have removed the i option as it is not supported in my machine.
Hi!
I'm using SunOS 5.7 w/ Bash 2.01.
Currently, I'm working on a script that will make it possible to find textfiles which match certain criteria. While I write this message, I had some brainfarts, found the answer myself :D and the question I had in mind is now no longer the question I... (3 Replies)
hi,
I have some 50 C files in which for indentation of code some devlopers used tabs, but we dont want any tab used for indentation.
I have following 2 need.
1) find tabs from all 50 files (which are in one directory )
2) replace them with 4 spaces.
Thanks
Rishi (6 Replies)
When formatting a script let's say for instance the following:
case ${choice} in
1)
vi ${tmp1}.tmp
# overwrite the tmp1 var with any user changes
cp ${tmp1}.tmp ${tmp1}
;;
... (2 Replies)
Hi All,
I am facing issues converting white spaces and tabs together in a file I am reading. Here is the command I am trying:
tr -s ' '@ | sort -t@ +1n filename
I guess the problem is that it is not converting the tabs to another delimiter. Also, I am supposed to accomplish this only using... (5 Replies)
I want my program to replace tabs with spaces.1tab=4spaces.When i write aa(tab)aaa(tab)(tab)a(tab) it must show me aaxxaaaxxxxxaxxx. I think that my program works corectly but when a write aaa(tab)a it must show aaaxa but it is aaaxxxxxa.Please for help!!! That is my code:
#include <stdio.h>
... (3 Replies)
hi buddies;
i have a file.txt:
Note: All the seperators are SPACE.
192.168.1.1
ParameterObject=1 Speech 1
ParameterObject=2 Speech 1
192.168.1.1
ParamFunction=1 UserID 1 (DEACTIVATED)
Sector=1,Device=2,Unit=3 DeviceId 1
192.168.1.1
FeederCable=2B ... (18 Replies)
I want to remove extra spaces from variable in aix script.
We retrieve the data from oracle database and then print the values. We have a value on 90th position.
When we execute the query on sqlplus it shows the length of 90th position as 3, but when we use the same query in aix script it shows... (5 Replies)
I'm having trouble getting my vimrc to work the way I want it. For some reason after I hit enter it is creating tabs instead of spaces like I would expect. Here is an example of what I am talking about. $ = newline, ^I = tab. On the line of struct EDGETAG* q; I hit enter and it created a tab... (2 Replies)
Hello all,
I have an unstructured file with space as delimiter , which I want to structure.
The output file should actually have only 5 columns with tab as delimiter.
The 4th column can have only 3 values ( biological_process , cellular_component , molecular_function )
Here is how the... (12 Replies)
Discussion started by: ritakadm
12 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)