01-27-2008
Quote:
Originally Posted by
KevinADC
S_M's suggestion reads the file in chunks, not line by line, and looks like it should work although the last match might fail if there isn't two newlines at the end of the file. You will have to try it and see or maybe he can clear that up.
I think it'll be ok with a normal file termination - I tried it on a single newline and it
looked alright but I havn't put a lot of testing into it for sure
![Smilie Smilie](https://www.unix.com/images/smilies/smile.gif)
10 More Discussions You Might Find Interesting
1. Programming
Hello experts,
I ve a text file I want to go to particular line . what is the best way to do this in c ?
I am tried as follows
fseek ( fh, pos, SEEK_SET);
but this functions moves the file pointer according to a number of bytes. Unfortunately I don't know the exact byte... (7 Replies)
Discussion started by: user_prady
7 Replies
2. Shell Programming and Scripting
I'm a novice at unix and need it more and more to do my work.
I seem running into problems getting this script "attempt" to work:
I need to copy all files in a directory, which is containing 22000 files, into a directory one level up. There a tool monitors the content of the dir and processes... (2 Replies)
Discussion started by: compasscard
2 Replies
3. Shell Programming and Scripting
Scenario: Users drop files into a directory which is regularly polled by my PERL process. On detecting a file my process will move it from the poll dir to a working directory. A user created a file with a £ symbol in the filename and my process now fails.
e.g £££F3AERO££.txt
... (1 Reply)
Discussion started by: thefal9
1 Replies
4. Shell Programming and Scripting
I have multiple txt files which begin with the word "orders" in folder C:\source. I need to move the files to folder C:\dest and rename them to "process_<date>_<count>"
So for example , if there are 3 files ordersa.txt , ordersb.txt and ordersc.txt in C:\source , after running the script I want... (1 Reply)
Discussion started by: johannd
1 Replies
5. UNIX for Dummies Questions & Answers
I have multiple txt files which begin with the word "orders" in folder C:\source. I need to move the files to folder C:\dest and rename them to "process_<date>_<count>"
So for example , if there are 3 files ordersa.txt , ordersb.txt and ordersc.txt in C:\source , after running the script I want... (7 Replies)
Discussion started by: johannd
7 Replies
6. Shell Programming and Scripting
Hello,
I'm new to this forum. I've been doing a lot of sed work lately and have found many useful tips on this forum. I've hit a roadblock in a project, though, and could really use some help.
I have a text file with many lines like the following, i.e., some lines begin with a single word... (3 Replies)
Discussion started by: paroikoi
3 Replies
7. Shell Programming and Scripting
I need to read the contents of a file. Then I need to grep for a keyword and replace part of the grepped line based on the condition of previous and present line.
Example input file:
V {
port1 = P;
port2 = 0;
shift_port = P0; /* if next shift_port is P0 I need... (9 Replies)
Discussion started by: naveen@
9 Replies
8. Shell Programming and Scripting
I want to add/append the info in the following format to my.txt file.
20130702|abcd20130702.txt FN|SN|DOB
I tried the below script but it throws me some exceptions.
<#!/bin/sh
dt = date '+%y%m%d'members;
echo $dt+|+members+$dt;
/usr/bin/awk -f
BEGIN { FS="|"; OFS="|"; } { print... (6 Replies)
Discussion started by: harik1982
6 Replies
9. UNIX for Dummies Questions & Answers
Hi All
Is there a way to export every line into new txt file where by the title of each txt output are same as the line ?
I have this txt files containing names:
Kandra Vanhooser
Rhona Menefee
Reynaldo Hutt
Houston Rafferty
Charmaine Lord
Albertine Poucher
Juana Maes
Mitch Lobel... (2 Replies)
Discussion started by: Nexeu
2 Replies
10. UNIX for Beginners Questions & Answers
Good morning, i need your help please
I need to move a .TXT file greater or igual 355 MB and its correspondent .LST file in a non recursive way
The operating system is:
uname -a
SunOS server01c 5.10 Generic_144488-01 sun4u sparc SUNW,SPARC-Enterprise
For example:
rw-r--r-- 1 xptol ... (8 Replies)
Discussion started by: alexcol
8 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)