Constraints in Dynamic Symbolic Execution: Bitvectors Or Integers?
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Ocaml Standard Library Ocaml V
OCaml Standard Library OCaml v. 3.12.0 | June 7, 2011 | Copyright c 2011 OCamlPro SAS | http://www.ocamlpro.com/ Standard Modules module List module Array Basic Data Types let len = List.length l let t = Array.create len v let t = Array.init len (fun pos -> v_at_pos) Pervasives All basic functions List.iter (fun ele -> ... ) l; let v = t.(pos) String Functions on Strings let l' = List.map(fun ele -> ... ) l t.(pos) <- v; Array Functions on Polymorphic Arrays let l' = List.rev l1 let len = Array.length t List Functions on Polymorphic Lists let acc' = List.fold left (fun acc ele -> ...) acc l let t' = Array.sub t pos len Char Functions on Characters let acc' = List.fold right (fun ele acc -> ...) l acc let t = Array.of_list list Int32 Functions on 32 bits Integers if List.mem ele l then ... let list = Array.to_list t Int64 Functions on 64 bits Integers if List.for all (fun ele -> ele >= 0) l then ... Array.iter (fun v -> ... ) t; Nativeint Functions on Native Integers if List.exists (fun ele -> ele < 0) l then ... let neg = List.find (fun x -> x < 0) ints Array.iteri (fun pos v -> ... ) t; Advanced Data Types let negs = List.find all (fun x -> x < 0) ints let t' = Array.map (fun v -> ... ) t let t' = Array.mapi (fun pos v -> ... ) t Buffer Automatically resizable strings let (negs,pos) = List.partition (fun x -> x < 0) ints let ele = List.nth 2 list let concat = Array.append prefix suffix Complex Complex Numbers Array.sort compare t; Digest MD5 Checksums let head = List.hd list Hashtbl Polymorphic Hash Tables let tail = List.tl list let value = List.assoc key assocs Queue Polymorphic FIFO module Char Stack Polymorphic LIFO if List.mem assoc key assocs then .. -
Version 7.8-Systemd
Linux From Scratch Version 7.8-systemd Created by Gerard Beekmans Edited by Douglas R. Reno Linux From Scratch: Version 7.8-systemd by Created by Gerard Beekmans and Edited by Douglas R. Reno Copyright © 1999-2015 Gerard Beekmans Copyright © 1999-2015, Gerard Beekmans All rights reserved. This book is licensed under a Creative Commons License. Computer instructions may be extracted from the book under the MIT License. Linux® is a registered trademark of Linus Torvalds. Linux From Scratch - Version 7.8-systemd Table of Contents Preface .......................................................................................................................................................................... vii i. Foreword ............................................................................................................................................................. vii ii. Audience ............................................................................................................................................................ vii iii. LFS Target Architectures ................................................................................................................................ viii iv. LFS and Standards ............................................................................................................................................ ix v. Rationale for Packages in the Book .................................................................................................................... x vi. Prerequisites -
101 Useful Linux Commands - Haydenjames.Io
101 Useful Linux Commands - haydenjames.io Some of these commands require elevated permissions (sudo) to run. Enjoy! 1. Execute the previous command used: !! 2. Execute a previous command starting with a specific letter. Example: !s 3. Short way to copy or backup a file before you edit it. For example, copy nginx.conf cp nginx.conf{,.bak} 4. Toggle between current directory and last directory cd - 5. Move to parent (higher level) directory. Note the space! cd .. 6. Go to home directory cd ~ 7. Go to home directory cd $HOME 8. Go to home directory (when used alone) cd 9. Set permissions to 755. Corresponds to these permissions: (-rwx-r-x-r-x), arranged in this sequence: (owner-group-other) chmod 755 <filename> 10. Add execute permission to all users. chmod a+x <filename> 11. Changes ownership of a file or directory to . chown <username> 12. Make a backup copy of a file (named file.backup) cp <file> <file>.backup 13. Copy file1, use it to create file2 cp <file1> <file2> 14. Copy directory1 and all its contents (recursively) into directory2 cp -r <directory1> <directory2>/ 15. Display date date 16. Zero the sdb drive. You may want to use GParted to format the drive afterward. You need elevated permissions to run this (sudo). dd if=/dev/zero of=/dev/sdb 17. Display disk space usage df -h 18. Take detailed messages from OS and input to text file dmesg>dmesg.txt 19. Display a LOT of system information. I usually pipe output to less. You need elevated permissions to run this (sudo). -
Powerview Command Reference
PowerView Command Reference TRACE32 Online Help TRACE32 Directory TRACE32 Index TRACE32 Documents ...................................................................................................................... PowerView User Interface ............................................................................................................ PowerView Command Reference .............................................................................................1 History ...................................................................................................................................... 12 ABORT ...................................................................................................................................... 13 ABORT Abort driver program 13 AREA ........................................................................................................................................ 14 AREA Message windows 14 AREA.CLEAR Clear area 15 AREA.CLOSE Close output file 15 AREA.Create Create or modify message area 16 AREA.Delete Delete message area 17 AREA.List Display a detailed list off all message areas 18 AREA.OPEN Open output file 20 AREA.PIPE Redirect area to stdout 21 AREA.RESet Reset areas 21 AREA.SAVE Save AREA window contents to file 21 AREA.Select Select area 22 AREA.STDERR Redirect area to stderr 23 AREA.STDOUT Redirect area to stdout 23 AREA.view Display message area in AREA window 24 AutoSTOre .............................................................................................................................. -
High Performance Multi-Node File Copies and Checksums for Clustered File Systems∗
High Performance Multi-Node File Copies and Checksums for Clustered File Systems∗ Paul Z. Kolano, Robert B. Ciotti NASA Advanced Supercomputing Division NASA Ames Research Center, M/S 258-6 Moffett Field, CA 94035 U.S.A. {paul.kolano,bob.ciotti}@nasa.gov Abstract To achieve peak performance from such systems, it is Mcp and msum are drop-in replacements for the stan- typically necessary to utilize multiple concurrent read- dard cp and md5sum programs that utilize multiple types ers/writers from multiple systems to overcome various of parallelism and other optimizations to achieve maxi- single-system limitations such as number of processors mum copy and checksum performance on clustered file and network bandwidth. The standard cp and md5sum systems. Multi-threading is used to ensure that nodes are tools of GNU coreutils [11] found on every modern kept as busy as possible. Read/write parallelism allows Unix/Linux system, however, utilize a single execution individual operations of a single copy to be overlapped thread on a single CPU core of a single system, hence using asynchronous I/O. Multi-node cooperation allows cannot take full advantage of the increased performance different nodes to take part in the same copy/checksum. of clustered file system. Split file processing allows multiple threads to operate This paper describes mcp and msum, which are drop- concurrently on the same file. Finally, hash trees allow in replacements for cp and md5sum that utilize multi- inherently serial checksums to be performed in parallel. ple types of parallelism to achieve maximum copy and This paper presents the design of mcp and msum and de- checksum performance on clustered file systems. -
NOMADS User Guide V1.0
NOMADS User Guide V1.0 Table of Contents • Introduction o Explanation of "Online" and "Offline" Data o Obtaining Offline Data o Offline Order Limitations • Distributed Data Access o Functional Overview o Getting Started with OPeNDAP o Desktop Services ("Clients") o OPeNDAP Servers • Quick Start to Retrieve or Plot Data o Getting Started o Using FTP to Retrieve Data o Using HTTP to Retrieve Data o Using wget to Retrieve Data o Using GDS Clients to Plot Data o Using the NOMADS Server to Create Plots • Advanced Data Access Methods o Subsetting Parameters and Levels Using FTP4u o Obtain ASCII Data Using GDS o Scripting Wget in a Time Loop o Mass GRIB Subsetting: Utilizing Partial-file HTTP Transfers • General Data Structure o Organization of Data Directories o Organization of Data Files o Use of Templates in GrADS Data Descriptor Files • MD5 Hash Files o Purpose of MD5 Files o Identifying MD5 Files o Using md5sum on MD5 Files (Linux) o Using gmd5sum on MD5 Files (FreeBSD) o External Links • Miscellaneous Information o Building Dataset Collections o Working with Timeseries Data o Creating Plots with GrADS o Scheduled Downtime Notification Introduction The model data repository at NCEI contains both deep archived (offline) and online model data. We provide a variety of ways to access our weather and climate model data. You can access the online data using traditional access methods (web-based or FTP), or you can use open and distributed access methods promoted under the collaborative approach called the NOAA National Operational Model Archive and Distribution System (NOMADS). On the Data Products page you are presented with a table that contains basic information about each dataset, as well as links to the various services available for each dataset. -
Other Useful Commands
Bioinformatics 101 – Lecture 2 Introduction to command line Alberto Riva ([email protected]), J. Lucas Boatwright ([email protected]) ICBR Bioinformatics Core Computing environments ▪ Standalone application – for local, interactive use; ▪ Command-line – local or remote, interactive use; ▪ Cluster oriented: remote, not interactive, highly parallelizable. Command-line basics ▪ Commands are typed at a prompt. The program that reads your commands and executes them is the shell. ▪ Interaction style originated in the 70s, with the first visual terminals (connections were slow…). ▪ A command consists of a program name followed by options and/or arguments. ▪ Syntax may be obscure and inconsistent (but efficient!). Command-line basics ▪ Example: to view the names of files in the current directory, use the “ls” command (short for “list”) ls plain list ls –l long format (size, permissions, etc) ls –l –t sort newest to oldest ls –l –t –r reverse sort (oldest to newest) ls –lrt options can be combined (in this case) ▪ Command names and options are case sensitive! File System ▪ Unix systems are centered on the file system. Huge tree of directories and subdirectories containing all files. ▪ Everything is a file. Unix provides a lot of commands to operate on files. ▪ File extensions are not necessary, and are not recognized by the system (but may still be useful). ▪ Please do not put spaces in filenames! Permissions ▪ Different privileges and permissions apply to different areas of the filesystem. ▪ Every file has an owner and a group. A user may belong to more than one group. ▪ Permissions specify read, write, and execute privileges for the owner, the group, everyone else. -
The AWK Programming Language
The Programming ~" ·. Language PolyAWK- The Toolbox Language· Auru:o V. AHo BRIAN W.I<ERNIGHAN PETER J. WEINBERGER TheAWK4 Programming~ Language TheAWI(. Programming~ Language ALFRED V. AHo BRIAN w. KERNIGHAN PETER J. WEINBERGER AT& T Bell Laboratories Murray Hill, New Jersey A ADDISON-WESLEY•• PUBLISHING COMPANY Reading, Massachusetts • Menlo Park, California • New York Don Mills, Ontario • Wokingham, England • Amsterdam • Bonn Sydney • Singapore • Tokyo • Madrid • Bogota Santiago • San Juan This book is in the Addison-Wesley Series in Computer Science Michael A. Harrison Consulting Editor Library of Congress Cataloging-in-Publication Data Aho, Alfred V. The AWK programming language. Includes index. I. AWK (Computer program language) I. Kernighan, Brian W. II. Weinberger, Peter J. III. Title. QA76.73.A95A35 1988 005.13'3 87-17566 ISBN 0-201-07981-X This book was typeset in Times Roman and Courier by the authors, using an Autologic APS-5 phototypesetter and a DEC VAX 8550 running the 9th Edition of the UNIX~ operating system. -~- ATs.T Copyright c 1988 by Bell Telephone Laboratories, Incorporated. All rights reserved. No part of this publication may be reproduced, stored in a retrieval system, or transmitted, in any form or by any means, electronic, mechanical, photocopy ing, recording, or otherwise, without the prior written permission of the publisher. Printed in the United States of America. Published simultaneously in Canada. UNIX is a registered trademark of AT&T. DEFGHIJ-AL-898 PREFACE Computer users spend a lot of time doing simple, mechanical data manipula tion - changing the format of data, checking its validity, finding items with some property, adding up numbers, printing reports, and the like. -
Rhd256.Bowez Notes.2006-07-20.Txt Thu Jul 20 15:31
../rhd256.bowez_notes.2006-07-20.txt Thu Jul 20 15:31:29 2006 1 ==> ./01_intro/notes.txt <== ---------------------------------------------------------------------- ---------------------------------------------------------------------- 2.3 Bash Special Characaters 1.3 Prerequisates ---------------------------------------------------------------------- ---------------------------------------------------------------------- ------------------------------------------------------------------ Familiarity: Redirection (Stream Manipulation) ------------------------------------------------------------------ the classroom setup (server1, station1, etc...) the "pub" directory every process has three default file descriptors (streams): Common Tools: 0: stdin 1: stdout terminal: 2: stderr changing fonts, etc.... - by default, all are connected to the terminal. editors: - In RHL, can be accessed by /dev/std{in,out,err} emacs vi, vim, gvim < redirect descriptor input pico -w, gedit > redirect descriptor output (create or clobber) (less pager) >> redirect descriptor output (create or append) finding information: 2>&1 bind one descriptor to another (i.e., combine stderr and stdout) --help, -h >& bash shortcut for the same man pages (chapters) info pages (info, pinfo, nautilus) examples: /usr/share/doc grep root /etc/* rpm (-qf filename, -ql, -qi) grep root /etc/* > /tmp/out grep root /etc/* 2> /tmp/err ---------------------------------------------------------------------- grep root /etc/* > /tmp/out2 2> /tmp/err2 grep root /etc/* >& /tmp/all 1.4 Procedures -
Download Instructions—Portal
Download instructions These instructions are recommended to download big files. How to download and verify files from downloads.gvsig.org • H ow to download files • G NU/Linux Systems • MacO S X Systems • Windows Systems • H ow to validate the downloaded files How to download files The files distributed on this site can be downloaded using different access protocols, the ones currently available are FTP, HTTP and RSYNC. The base URL of the site for the different protocols is: • ftp://gvsig.org/ • http://downloads.gvsig.org/ • r sync://gvsig.org/downloads/ To download files using the first two protocols is recommended to use client programs able to resume partial downloads, as it is usual to have transfer interruptions when downloading big files like DVD images. There are multiple free (and multi platform) programs to download files using different protocols (in our case we are interested in FTP and HTTP), from them we can highlight curl (http://curl.haxx.se/) and wget (http://www.gnu.org/software/wget/) from the command line ones and Free Download Manager from the GUI ones (this one is only for Windows systems). The curl program is included in MacOS X and is available for almost all GNU/Linux distributions. It can be downloaded in source code or in binary form for different operating systems from the project web site. The wget program is also included in almost all GNU/Linux distributions and its source code or binaries of the program for different systems can be downloaded from this page. Next we will explain how to download files from the most usual operating systems using the programs referenced earlier: • G NU/Linux Systems • MacO S X Systems • Windows Systems The use of rsync (available from the URL http://samba.org/rsync/) it is left as an exercise for the reader, we will only said that it is advised to use the --partial option to avoid problems when there transfers are interrupted. -
High-Performance, Multi-Node File Copies and Checksums for Clustered File Systems Stiffness and Damping Coefficient Estimation O
https://ntrs.nasa.gov/search.jsp?R=20120010444 2019-08-30T20:40:58+00:00Z View metadata, citation and similar papers at core.ac.uk brought to you by CORE provided by NASA Technical Reports Server entrance pupil points of interest. These field or aperture, depending on the allo- nates of interest are obtained for every are chosen to be the edge of each space, cations. Once this minimum set of coor- plane of the propagation, the data is for- so that these rays produce the bounding dinates on the pupil and field is ob- matted into an xyz file suitable for FRED volume for the beam. The x and y global tained, a new set of rays is generated optical analysis software to import and coordinate data is collected on the sur- between the field plane and aperture create a STEP file of the data. This re- face planes of interest, typically an image plane (or vice-versa). sults in a spiral-like structure that is easily of the field and entrance pupil internal These rays are then evaluated at imported by mechanical CAD users who of the optical system. This x and y coor- planes between the aperture and field, at can then use an automated algorithm to dinate data is then evaluated using a a desired number of steps perceived nec- wrap a skin around it and create a solid convex hull algorithm, which removes essary to build up the bounding volume that represents the beam. any internal points, which are unneces- or cone shape. At each plane, the ray co- This work was done by Joseph Howard and sary to produce the bounding volume of ordinates are again evaluated using the Lenward Seals of Goddard Space Flight Center. -
HPRC Short Course Introduction to Linux
HPRC Short Course Introduction to Linux Texas A&M University High Performance Research Computing – https://hprc.tamu.edu 1 For Assistance… Website: hprc.tamu.edu Email: [email protected] Telephone: (979) 845-0219 Visit us: Henderson Hall, Room 114A Help us, help you -- we need more info •Which Cluster •NetID •Job ID(s) if any •Location of your job files, input/output files •Application used & module(s) loaded if any •Error messages •Steps you have taken, so we can reproduce the problem Texas A&M University High Performance Research Computing – https://hprc.tamu.edu 2 Course Outline 1 Accessing the System Secure shell 2 Directories Our first commands 3 Gedit An easy text editor 4 File Manipulation Copy, rename/move & remove 5 Passing output & Redirection Learning about operators 6 The Linux file system Attributes and permissions 7 Environment Variables & $PATH Storing and retrieving information 8 Basic Shell Scripting Making Linux work for you Texas A&M University High Performance Research Computing – https://hprc.tamu.edu 3 Your Login Password • Both State of Texas law and TAMU regulations prohibit the sharing and/or illegal use of computer passwords and accounts; • Don’t write down passwords; • Don’t choose easy to guess/crack passwords; • Change passwords frequently Texas A&M University High Performance Research Computing – https://hprc.tamu.edu 4 1. Accessing the system • SSH (secure shell) – The only program allowed for remote access; encrypted communication; freely available for Linux/Unix and Mac OS X hosts; • For Microsoft Windows PCs, use MobaXterm • https://hprc.tamu.edu/wiki/HPRC:MobaXterm – You are able to view images and use GUI applications with MobaXterm – or Putty • https://hprc.tamu.edu/wiki/HPRC:Access#Using_PuTTY – You can not view images or use GUI applications with PuTTY Texas A&M University High Performance Research Computing – https://hprc.tamu.edu 5 Using SSH - MobaXterm on Windows https://hprc.tamu.edu/wiki/HPRC:MobaXterm titan.tamu.edu Use titan.tamu.edu as Remote host name.