Hello,
I was searching for the meaning of commands like ps -afe ,ps -fp and ptree
but was not able to find there exact meaning ....
Pls help me in getting these...
Thanks in advance,
Pradeep (1 Reply)
gurus,
normally to stop a process ,i need to kill all its child & then parent process.
i do it manually as follows
bash-2.03$ ps -ef | grep bpm|grep -v grep
tibadmin 21882 21875 0 May 27 ? 0:00 /bin/sh ./bpmse_20.sh -Xms512m -Xmx512m /tibco/UpdateCustomer/dat/UpdateCustome
... (0 Replies)
at work, I'm a UNIX administrator, but at home I use openSUSE 11. One of the commands that I use to assist me in trouble shooting A LOT is called ptree process tree. does anyone know of a ptree for linux? yes, I can just use ps -ef and see who the parent pid is and then 'ps -ef | grep <parent... (4 Replies)
Hi,
How to kill the processes running under ptree ?
I am noticing lot of processes running under ptree with ssh ? I tried to kill with -9 option which is not working ?
Thanks,
Radhika. (2 Replies)
Hi
does anyone know of the equivalent of "ptree <PID>" command which can be used on IBM (AIX) machine. I was trying to use "ptref" but it produces too many lines of "unrelated " to the PID output.
May be someone has this issue before. Thanks a lot -A (2 Replies)
Hi,
Recently did a ptree on a vsh PID and found that the only child process underneath the vsh parent is rlogin (telnet session(s)). Is there any way to drill down further from here? What causes rlogin to make vsh go high or is it rlogin? The cpu utilization at times is at 48-49%. We want to... (0 Replies)
Hello guys,
Is there any command to check the all child processes of a process like `ptree`?
ptree is not working in Linux..
Regards,
Raghu (3 Replies)
Unix (and Linux) uses a process tree that gives a natural security, by simple inheritance of attributes.
The following ptree script shows it. It runs on all Linux flavors.
Mostly useful for debugging.
#!/bin/sh
# Solaris style ptree
&& exec /usr/bin/ptree "$@"
... (6 Replies)
Discussion started by: MadeInGermany
6 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)