05-05-2009
if using vi
for ^Z, type ctrl+v+z
10 More Discussions You Might Find Interesting
1. UNIX for Dummies Questions & Answers
Hello,
I am attempting to remove all the ^M characters in a file in VI.
The command I am using is
:1,$s/^V^M//g
but it doesn't work, saying 'substitute pattern match failed'.
Any ideas why?
Jules (2 Replies)
Discussion started by: julesinbath
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2. UNIX for Dummies Questions & Answers
HI i am having a file this
(sys19:pnlfct:/pfact/temp>) cat temp_sand
1234567890
1234567890
1234567890
1234567890
I want to make this file as
(sys19:pnlfct:/pfact/temp>) cat temp_sand
1456789023
1456789023
1456789023
1456789023
just take the 2nd and 3rd position and put it... (5 Replies)
Discussion started by: arunkumar_mca
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3. Shell Programming and Scripting
How can I remove the last character from each line of a file?
This must be done without "funny" characters, as I want to transfer the code to/from Windows.
Any ideas? (17 Replies)
Discussion started by: cjhancock
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4. UNIX for Dummies Questions & Answers
Dear Members,
Problem is suppose i have 50 lines in a file, 40 lines last character is "\" and the remaining 10 lines are good(i mean these 10 lines do not have "\" character)
How can i remove this character from the file.
Thanks (1 Reply)
Discussion started by: sandeep_1105
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5. UNIX for Dummies Questions & Answers
Hi,
I have a Linux file which has content as sh (0 Replies)
Discussion started by: bhuvanas
0 Replies
6. Shell Programming and Scripting
Hi,
My file has this special character "^M"
I would like to remove this characters.
eg:
abc,abc,^M
i tried using sed but doesnt work.
i used octal dump command to see special character it returns following:
015
\r
Appreciate your reply. (6 Replies)
Discussion started by: pinnacle
6 Replies
7. Shell Programming and Scripting
I have a file like this:
DDD_ABCDE2AB2_1104081408.104480
I need to remove the 1 after the . in the file name so that it reads:
DDD_ABCDE2AB2_1104081408.04480
Having some difficulty getting the command to work. I tried using
cut -d 26
but that just doesn't work. (3 Replies)
Discussion started by: bbbngowc
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8. UNIX for Dummies Questions & Answers
I need help removing the last character of every line if it is a certain character. For example I need to get rid of a % character if it is in the last position.
Input:
aaa%
%bbb
ccc
d%dd%
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aaa
%bbb
ccc
d%dd
I tried this but it gets rid of all of the % characters.... (5 Replies)
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9. Shell Programming and Scripting
Hi below is my file.
cat input.dat
101,abhilash,1000
102,prave
en,2000
103,partha,4
000
10
4,naresh,5000
(its just a example file)
and my output should be:
101,abhilash,1000
102,praveen,2000
103,partha,4000
104,naresh,5000
below is my code
cat input.dat |tr -d '\n' >... (6 Replies)
Discussion started by: abhilash_nakka
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10. Shell Programming and Scripting
Hello guys,
I would need to remove the last character ")" of a specific line. This can be from any line. Your help is appreciated. Below is the line.
HOSTNAME=(DESCRIPTION=(ADDRESS=(PROTOCOL=TCP))
Please help. (6 Replies)
Discussion started by: sang8g
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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)