11-26-2007
Quote:
Originally Posted by
bakunin
Still i can fully understand that using a 19 year old standard software is way too risky.
I simply standardise on sh in my scripts for portability among a wide range of operating systems. There was a long period when ksh was not part of the standard install on Linux.
10 More Discussions You Might Find Interesting
1. Shell Programming and Scripting
I have an application on Informix 4GL, and I am invoking the shell script from the program, but I need to know if the shell script work fine or not, in order to continue the process.
I know that we can use $? to get the final status but this is on unix command. How can I return a value from the... (3 Replies)
Discussion started by: jennifer01
3 Replies
2. Programming
Hi,
Iam calling a C program from a Unix shell script. The (C) program reads encrypted username/password from a text file , decrypts and returns the decrypted string.
Is there any way i can return the decrypted string to Unix shell program.
My shell script uses the output of the program to... (11 Replies)
Discussion started by: satguyz
11 Replies
3. Shell Programming and Scripting
Hi,
I trying to find the solution for writing the programming in unix by shell programming for sorting thr string in alphabetical order.
I getting diffculty in that ,, so i want to find out the solution for that
Please do needful
Thanks
Bhagyesh (1 Reply)
Discussion started by: bp_vanarse
1 Replies
4. AIX
Can anybody pls look into this script and tell me where I went wrong. After running this script, it is showing like "Trying to overlay current working directory ABORT!!!"
:-(
ARGCNT=$#
if
then
echo "Two parameters are needed for this shell "
echo "Please try again with... (1 Reply)
Discussion started by: clnsharma123
1 Replies
5. Shell Programming and Scripting
Hi Folks,
The subject is my question:
Can we pass an array of strings from a Perl Program to a Shell Script?
Please provide some sample code.
Thanks
---------- Post updated at 11:52 PM ---------- Previous update was at 11:43 PM ----------
I got it.
Its here:... (0 Replies)
Discussion started by: som.nitk
0 Replies
6. Shell Programming and Scripting
Found myself stuck on this seemingly trivial issue. I have this script which call other shell files to do their deeds. The shell files in turn call some other programs as well. My problem is that in two of these shell files, the control doesnt return to next command in script unless the Enter key... (2 Replies)
Discussion started by: DoesntMatter
2 Replies
7. Shell Programming and Scripting
Hi All,
well , i am facing this problem.. i have tried a few sample codes but there isn't any solution . could anyone please give a sample code as of how to do this...
Please see the below details...and read the details carefully.
I have written some code, logic is
1)from... (4 Replies)
Discussion started by: aish11
4 Replies
8. Shell Programming and Scripting
Hi All,
My program flow is as below
Windows batch -- > Cygwin batch --> zsh script
There are multiple Cygwin batch scripts that are called from Windows batch file . But when i am executing the first cygwin batch script the control goes to the zsh file and executes and stoping from... (1 Reply)
Discussion started by: Hypesslearner
1 Replies
9. Shell Programming and Scripting
Hello All,
I have a UNIX script which will prepare anonymous oracle pl/sql block in a temporary file in run time and passes this file to sqlplus as given below.
cat > $v_Input_File 2>>$v_Log << EOF
BEGIN
EXECUTE IMMEDIATE 'ALTER SESSION FORCE PARALLEL DML PARALLEL 16';
EXECUTE... (1 Reply)
Discussion started by: vikas_trl
1 Replies
10. Shell Programming and Scripting
Hello All,
I have exactly same issue @vikas_trl had in following link:
https://www.unix.com/shell-programming-and-scripting/259854-control-not-returning-sqlplus-calling-unix-shell-script.html
I wonder if he or somebody else could find the issue's cause or the solution.
Any help would... (4 Replies)
Discussion started by: RicardoQ
4 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)