12-24-2008
Quote:
Originally Posted by
broli
* dosnt match anything. its a quatifier, that menas, zero, or mroe
z* matchs
""
"z"
"zz"
"zzz"
I hope you have added the quotes ( "" ) for explanatory purpose
10 More Discussions You Might Find Interesting
1. UNIX for Dummies Questions & Answers
I need to find out if a variable contains a certain text string, then do something about it.
Here is what I mean, but I don't know how to get a "contains" operator
# We have volumes called:
# /Volumes/BackupsA_K
# /Volumes/BackupsL_Z
# /Volumes/Backups_Admin
# (could be more, etc)... (5 Replies)
Discussion started by: TheCrunge
5 Replies
2. Shell Programming and Scripting
I am trying to check two variables and if both are blank I want to set a flag:
the_f3_pid=`rsh $target ps -ef | grep "f3.eab" | awk '{print $2}'`
the_f7_pid=`rsh $target ps -ef | grep "f7.eab" | awk '{print $2}'`
if ; then
y=1
fi
I get an error:
./script_name: test: 0403-021 ]... (4 Replies)
Discussion started by: rcarnesiii
4 Replies
3. HP-UX
hi,
i was trying to club to test condition with if.
if -o ; then
it is giving me error message, i wanted to ask how can we check two condtions with one if. (1 Reply)
Discussion started by: babom
1 Replies
4. Programming
Hi,
Please clear the 2 questions,
2 Questions,
1) Why the new as a operator? Is there any special reason why it can't be a function like malloc?
2) How are we considering sizeof(),new are as a opearartors? I know + - * / -> , . etc.. are operators, which criteria satisfied by sizeof()... (4 Replies)
Discussion started by: Nagapandi
4 Replies
5. Shell Programming and Scripting
Why the op of the following code is like this ????
i=4 j=-1 k=0
echo $?
echo $?
echo $? (5 Replies)
Discussion started by: lipun4u
5 Replies
6. Shell Programming and Scripting
Dear All,
Good day, Just i would like to know that is there anything called difference operator in awk?
For example, if a file contains 5 columns (as shown below) with both negative and positive values:
Col1 Col2 Col3 Col4 Col5
I need to calculate the difference between Col1 and... (3 Replies)
Discussion started by: Fredrick
3 Replies
7. UNIX for Dummies Questions & Answers
All,
THe below is my script , when i use this i am getting nothing . could any one help me to know what is the use of the << operator below
su - $8 << supo
echo "exportsph $2 $1 $3 $4"
exportsph $2 $1 $3 $4
supo
i also tried as individual command su - userid << supo , when i do... (3 Replies)
Discussion started by: arunkumar_mca
3 Replies
8. UNIX for Dummies Questions & Answers
im new to bash scripting and im just using online tutorials and trial and error. i wanted to write a script to read numbers from a file and find their sum:
#!/bin/bash
theSum=0
for line in $(cat numbers.txt)
do
let "theSum = theSum + $line"
echo "$line"
done
echo "The sum is... (3 Replies)
Discussion started by: astrolux444
3 Replies
9. Shell Programming and Scripting
hi,
I got a requirement to change existing script like below to search additional pattern "DB select". i tried using \| opearator but it is not working :(. Below is the existing code
echo $(cat ${1} |sed -n '/Error in/ {
N
N
N
/Too many/ {
p
... (5 Replies)
Discussion started by: shyamxtasy
5 Replies
10. UNIX for Dummies Questions & Answers
Can anyone guide me whats happening in this program given below. I got the Output 7 7 12 49... i was expecting 5 16 9 25.
First is simple (3+1)*(3+1)
Second is again 3*3; i =4 now
Third i =5 then 5*5;
i don't know where i am going wrong!
#include<stdio.h>
#define PRODUCT(x) (x*x)
int... (5 Replies)
Discussion started by: Abhishek_kumar
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)