03-11-2014
Quote:
Originally Posted by
bartus11
What operating system are you using?
Bash 4.1.10(4)
GNU Awk 4.0.2
CYGWIN_NT-6.1 1.7.17
10 More Discussions You Might Find Interesting
1. UNIX for Dummies Questions & Answers
It would be convenient to be able to combine awk tests. For example, suppose that I do this query:
awk '$1 != "Bob" || $1 != "Linda" {print $2}' datafileIs there a reasonable way to combine the conditions into a single statement? For example, in egrep, I can do:
egrep -v "Bob|Linda"... (4 Replies)
Discussion started by: treesloth
4 Replies
2. Shell Programming and Scripting
Hi there,
what is wrong with this?
grep ">>" alarms_temp | awk '{print substr($5, 2), $7}' | read var1 var2
echo "$var1"
echo "$var2"
Both variable are empty, but if i run:
grep ">>" alarms_temp | awk '{print substr($5, 2), $7}'
I have:
0 9
as a result. (2 Replies)
Discussion started by: marimovo
2 Replies
3. Shell Programming and Scripting
Hi,
I am running a shell script from a central server to multiple remote servers using the following code:
application_check()
{
# Linux/UNIX box with ssh key based login
SERVERS=`cat /tmp/server-details`
# SSH User name
USR="user"
# create new file
> /tmp/abc.log
# connect... (2 Replies)
Discussion started by: mystition
2 Replies
4. Shell Programming and Scripting
ZSCORE=$(awk "BEGIN {if($STDEVIATE>0) {print ZSCORER=$(awk "BEGIN{print (${ALL} - ${AVERAGE}) / ${STDEVIATE}}")}else print "0"}")
awk: fatal: division by zero attempted
awk: BEGIN {if(0==0) {print ZSCORER=}else print 0}
awk: ^ syntax error
ALL=9
STDEVIATE=0... (2 Replies)
Discussion started by: SkySmart
2 Replies
5. Shell Programming and Scripting
] && { echo "The free mem need to be more than 2G" } (3 Replies)
Discussion started by: yanglei_fage
3 Replies
6. Shell Programming and Scripting
echo "abc:bcd" |awk '{split($0,b,":");print "b" is good }'
I want to "bcd" is good , anything is wrong with my, please don't change my thought with split, I just want to know what's wrong :o (1 Reply)
Discussion started by: yanglei_fage
1 Replies
7. Shell Programming and Scripting
I have a file
and if I'm doing following action on that file it's coming up correctly
awk -F"," '/DATA_TYPE/ { cnt += $3 } END { print " DATA_TYPE count=" cnt}' inter
DATA_TYPE count=19593131
now if I'm changing same AWK, so that now it can accept variable, then it's somehow not working.... (3 Replies)
Discussion started by: manas_ranjan
3 Replies
8. Shell Programming and Scripting
file1:
maximum_delay time: 102.794 ms
maximum_delay time: 92.977 ms
maximum_delay time: 98.895 ms
maximum_delay time: 96.891 ms
maximum_delay time: 86.966 ms
maximum_delay time: 95.91 ms
maximum_delay time: 98.921 ms
maximum_delay time: 89.881 ms
maximum_delay time: 92.931 ms... (1 Reply)
Discussion started by: yanglei_fage
1 Replies
9. Shell Programming and Scripting
Hi there, I am trying to select a number of lines based on the lat. lon columns in a file but my awk code gives me empty result.
Here is my file:
20100213 102212 33.1185 39.4078 2.9
20100214 141753 33.1058 39.9068 2.9
20100218 115828 33.1907 39.3575 2.9
20100225 220001 33.1932 39.9448... (10 Replies)
Discussion started by: johankor
10 Replies
10. Shell Programming and Scripting
I have a script that logs into a server and pings several other servers in order to verify IP path between servers.
The output can look like this, if good pings:
Response from 1.1.1.4;_id=0, vlan_prio=0): seq=0 time=91.547 ms.
Response from 1.1.1.4;_id=0, vlan_prio=0): seq=1 time=61.176 ms.... (7 Replies)
Discussion started by: he204035
7 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)