02-27-2020
man bash:
Quote:
The exit status is zero, unless end-of-file is encountered,
By setting
-d'', i.e. the delimiter to the "empty string",
read will not stop anywhere but read through to the
EOF string which it interprets as end-of-file and sets
$? to 1.
10 More Discussions You Might Find Interesting
1. Shell Programming and Scripting
Hi,
Can anyone plz share their experience with -
Building shell script to append the file with date in following format-
Filename_MMDDYYYY.txt
Thanks in advance (2 Replies)
Discussion started by: prince_of_focus
2 Replies
2. Infrastructure Monitoring
Hi,
I'm reading net-snmp site, using C language and unix environment, I have manager ( do get/set command), agent and server ... I'm trying to monitor cpu, memory and disk usage and get Ip address of server and send the value back to agent, stored in variable which enable manager to gets the... (1 Reply)
Discussion started by: zainab
1 Replies
3. Shell Programming and Scripting
I have a ksh script that runs a sqlplus script. Every time I run the ksh script it generates a log file like it should and a file called shPID (sh47398.1) with the text of the sql script. Why is it doing this? It is the only ksh script that I have that does this.
thanks. (0 Replies)
Discussion started by: djehresmann
0 Replies
4. Shell Programming and Scripting
Hello,
Can any one please assist how to scirpt it:
Every day a new log file is create and I want to process only the one generated yesterday and get the data of column 3 and 6.
For example today's date is 24 then I want to get the data of log file created on 23rd.
Log Files in... (7 Replies)
Discussion started by: sureshcisco
7 Replies
5. Solaris
Hi All,
New to unix. Here is the problem. Running a script that extracts data from hyperion essbase and generates a file in unix. This script fails most of the times with a very low success rate. The data has increased a lot in the last few months resulting in the file being more than 2 gb.
... (2 Replies)
Discussion started by: noufalshaw
2 Replies
6. UNIX for Advanced & Expert Users
Hi all,
I have root directory on server 1 say A and having sub directory B now my application generates output files and put in sub directory B.
now i need to transfer these files from server1 to server2 by scp which is having same directory structure A and sub directory B
I have tried... (2 Replies)
Discussion started by: tushar_spatil
2 Replies
7. Shell Programming and Scripting
Dear Guru's
I've a requirment to grep for a string in series of log files that are getting generated almost every minute.
I'm looking to schedule a script every 15 mountes,in order to check if the error string has been generated in any of the log files generated in last 15 minutes.
Please... (3 Replies)
Discussion started by: rajivatnova
3 Replies
8. UNIX for Advanced & Expert Users
hello,
can someone please suggest a script to rename a file that was generated today and filename that being generated daily starts with date, its a xml file.
here is example.
# find . -type f -mtime -1
./20130529_4995733057260357019.xml
#
this finename should be renamed to this format.... (6 Replies)
Discussion started by: bobby320
6 Replies
9. Shell Programming and Scripting
Heyas
At home i have 1 nas with 3 shares, of which i used to mount 2 of them using a script with hardcoded password and username in it.
EDIT: Turns out, its not the script, but 'how i access' the nas share.. (-o user=XY,password=... VS. -o credentials=...).
Figured about credential files,... (0 Replies)
Discussion started by: sea
0 Replies
10. Shell Programming and Scripting
Hi All,
I have created a unix script to mail the xls file.This is being done using mailx command
fdate=`tail -1 abc.xls | cut -c1-8`
SUBJECT="CARD GL Exceptions : ${ENV} for ${fdate}"
destname=CARD_GL_Exceptions_$fdate
sed 's/#BUSINESS/BUSINESS/1' abc.xls > abc2.xls
mv abc2.xls abc.xls... (2 Replies)
Discussion started by: karthik adiga
2 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)