Introducing the Command Line April 26Th, 2002
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Program #6: Word Count
CSc 227 — Program Design and Development Spring 2014 (McCann) http://www.cs.arizona.edu/classes/cs227/spring14/ Program #6: Word Count Due Date: March 11 th, 2014, at 9:00 p.m. MST Overview: The UNIX operating system (and its variants, of which Linux is one) includes quite a few useful utility programs. One of those is wc, which is short for Word Count. The purpose of wc is to give users an easy way to determine the size of a text file in terms of the number of lines, words, and bytes it contains. (It can do a bit more, but that’s all of the functionality that we are concerned with for this assignment.) Counting lines is done by looking for “end of line” characters (\n (ASCII 10) for UNIX text files, or the pair \r\n (ASCII 13 and 10) for Windows/DOS text files). Counting words is also straight–forward: Any sequence of characters not interrupted by “whitespace” (spaces, tabs, end–of–line characters) is a word. Of course, whitespace characters are characters, and need to be counted as such. A problem with wc is that it generates a very minimal output format. Here’s an example of what wc produces on a Linux system when asked to count the content of a pair of files; we can do better! $ wc prog6a.dat prog6b.dat 2 6 38 prog6a.dat 32 321 1883 prog6b.dat 34 327 1921 total Assignment: Write a Java program (completely documented according to the class documentation guidelines, of course) that counts lines, words, and bytes (characters) of text files. -
ENV-11 License Amendment
CITY OF BURLINGTON ● DEPARTMENT OF PUBLIC WORKS ENV AMENDMENT TO SOLID WASTE LICENSE TO BE COMPLETED WHEN A VEHICLE FLEET CHANGES OR EARLY PICK UPS ARE REQUESTED PURSUANT TO CHAPTER 14, CODE OF ORDINANCES. (SEE INSTRUCTIONS ON BACK BEFORE COMPLETING) 11 IDENTIFICATION FEDERAL EIN ACCOUNT ID TRADE NAME (DBA, etc.) LEGAL NAME BUSINESS TELEPHONE NUMBER BUSINESS FAX NUMBER TAXPAYER REPRESENTATIVE YEARS IN BUSINESS FORM OF BUSINESS (check one) Sole Proprietorship Partnership/LLC Corporation BUSINESS ADDRESS CITY/TOWN STATE ZIP CODE CONTACT NAME CONTACT PHONE NUMBER CONTACT EMAIL ADDRESS AMENDMENT This is to amend the solid waste collection license for fiscal year 20____. EARLY PICK UPS Are you requesting early pick up? YES NO Are you requesting changes to an approved early pick up? YES NO Did you attach ENV-10B, Early Pick Up Requests? YES N/A CHANGES TO VEHICLE FLEET Has a vehicle been added to or removed from your fleet? YES NO Has the location of your parked vehicles changed? YES NO New Location: Did you attach ENV-10A, Vehicle Descriptions? YES N/A I certify that I have read the City of Burlington’s solid waste ordinance (Chapter 14, Burlington Code of Ordinances) and regulations. I understand that failure to observe the law and regulations could result in a revocation of my license to collect solid waste and recyclable material within the City of Burlington. I also certify that I understand the City of Burlington has a Noise Control Ordinance (Sec. 21-13, Code of Ordinances) and that I cannot begin the collection of solid waste or recyclable material before 7:00 a.m. -
Modern Programming Languages CS508 Virtual University of Pakistan
Modern Programming Languages (CS508) VU Modern Programming Languages CS508 Virtual University of Pakistan Leaders in Education Technology 1 © Copyright Virtual University of Pakistan Modern Programming Languages (CS508) VU TABLE of CONTENTS Course Objectives...........................................................................................................................4 Introduction and Historical Background (Lecture 1-8)..............................................................5 Language Evaluation Criterion.....................................................................................................6 Language Evaluation Criterion...................................................................................................15 An Introduction to SNOBOL (Lecture 9-12).............................................................................32 Ada Programming Language: An Introduction (Lecture 13-17).............................................45 LISP Programming Language: An Introduction (Lecture 18-21)...........................................63 PROLOG - Programming in Logic (Lecture 22-26) .................................................................77 Java Programming Language (Lecture 27-30)..........................................................................92 C# Programming Language (Lecture 31-34) ...........................................................................111 PHP – Personal Home Page PHP: Hypertext Preprocessor (Lecture 35-37)........................129 Modern Programming Languages-JavaScript -
Vim for Humans Release 1.0
Vim for humans Release 1.0 Vincent Jousse August 12, 2015 CONTENTS 1 Preamble 1 1.1 Disclaimer .................... ..................... 1 1.2 Paid book but free price .................... ..................... 1 1.3 Free license .................... ..................... 1 1.4 Thanks .................... ..................... 1 2 Introduction 3 2.1 For who? .................... ..................... 4 2.2 What you will be learning .................... .................... 4 2.3 What you will not be learning .................... .................. 4 2.4 The hardest part is to get started .................... ................. 5 3 Having a usable Vim 7 3.1 Essential preamble: the insert mode .................... ............... 8 3.2 Modes: the powerful Vim secrets .................... 10 3.3 The lifesaver default configuration .................... 12 3.4 And now, the color! .................... ..................... 13 3.5 Ourfirst plugin: thefile explorer .................... 17 3.6 Here we go .................... ..................... 19 4 The text editor you’ve always dreamed of 23 4.1 Learning how to move: the copy/paste use case ..................... 23 4.2 Forgetting the directional keys .................... 26 4.3 Doing without the Esc key .................... .................... 29 4.4 Combining keys and moves .................... ................... 29 4.5 Search / Move quickly .................... ..................... 30 4.6 Visual mode .................... ..................... 31 4.7 It’s your turn! .................... .................... -
Linux Fundamentals (GL120) U8583S This Is a Challenging Course That Focuses on the Fundamental Tools and Concepts of Linux and Unix
Course data sheet Linux Fundamentals (GL120) U8583S This is a challenging course that focuses on the fundamental tools and concepts of Linux and Unix. Students gain HPE course number U8583S proficiency using the command line. Beginners develop a Course length 5 days solid foundation in Unix, while advanced users discover Delivery mode ILT, vILT patterns and fill in gaps in their knowledge. The course View schedule, local material is designed to provide extensive hands-on View now pricing, and register experience. Topics include basic file manipulation; basic and View related courses View now advanced filesystem features; I/O redirection and pipes; text manipulation and regular expressions; managing jobs and processes; vi, the standard Unix editor; automating tasks with Why HPE Education Services? shell scripts; managing software; secure remote • IDC MarketScape leader 5 years running for IT education and training* administration; and more. • Recognized by IDC for leading with global coverage, unmatched technical Prerequisites Supported distributions expertise, and targeted education consulting services* Students should be comfortable with • Red Hat Enterprise Linux 7 • Key partnerships with industry leaders computers. No familiarity with Linux or other OpenStack®, VMware®, Linux®, Microsoft®, • SUSE Linux Enterprise 12 ITIL, PMI, CSA, and SUSE Unix operating systems is required. • Complete continuum of training delivery • Ubuntu 16.04 LTS options—self-paced eLearning, custom education consulting, traditional classroom, video on-demand -
Praat Scripting Tutorial
Praat Scripting Tutorial Eleanor Chodroff Newcastle University July 2019 Praat Acoustic analysis program Best known for its ability to: Visualize, label, and segment audio files Perform spectral and temporal analyses Synthesize and manipulate speech Praat Scripting Praat: not only a program, but also a language Why do I want to know Praat the language? AUTOMATE ALL THE THINGS Praat Scripting Why can’t I just modify others’ scripts? Honestly: power, flexibility, control Insert: all the gifs of ‘you can do it’ and ‘you got this’ and thumbs up Praat Scripting Goals ~*~Script first for yourself, then for others~*~ • Write Praat scripts quickly, effectively, and “from scratch” • Learn syntax and structure of the language • Handle various input/output combinations Tutorial Overview 1) Praat: Big Picture 2) Getting started 3) Basic syntax 4) Script types + Practice • Wav files • Measurements • TextGrids • Other? Praat: Big Picture 1) Similar to other languages you may (or may not) have used before • String and numeric variables • For-loops, if else statements, while loops • Regular expression matching • Interpreted language (not compiled) Praat: Big Picture 2) Almost everything is a mouse click! i.e., Praat is a GUI scripting language GUI = Graphical User Interface, i.e., the Objects window If you ever get lost while writing a Praat script, click through the steps using the GUI Getting Started Open a Praat script From the toolbar, select Praat à New Praat script Save immediately! Save frequently! Script Goals and Input/Output • Consider what -
Text Editing in UNIX: an Introduction to Vi and Editing
Text Editing in UNIX A short introduction to vi, pico, and gedit Copyright 20062009 Stewart Weiss About UNIX editors There are two types of text editors in UNIX: those that run in terminal windows, called text mode editors, and those that are graphical, with menus and mouse pointers. The latter require a windowing system, usually X Windows, to run. If you are remotely logged into UNIX, say through SSH, then you should use a text mode editor. It is possible to use a graphical editor, but it will be much slower to use. I will explain more about that later. 2 CSci 132 Practical UNIX with Perl Text mode editors The three text mode editors of choice in UNIX are vi, emacs, and pico (really nano, to be explained later.) vi is the original editor; it is very fast, easy to use, and available on virtually every UNIX system. The vi commands are the same as those of the sed filter as well as several other common UNIX tools. emacs is a very powerful editor, but it takes more effort to learn how to use it. pico is the easiest editor to learn, and the least powerful. pico was part of the Pine email client; nano is a clone of pico. 3 CSci 132 Practical UNIX with Perl What these slides contain These slides concentrate on vi because it is very fast and always available. Although the set of commands is very cryptic, by learning a small subset of the commands, you can edit text very quickly. What follows is an outline of the basic concepts that define vi. -
Unique Identifier for Staff (UID Staff) Overview
Unique Identifier for Staff (UID Staff) Overview The intent of this document is to provide an overview of the Unique Identifier for Staff (UID Staff) system prior to working in the UID Staff System. After reviewing this information, please review the training materials that are available on the UID Staff Training website (http://www.ncpublicschools.org/cedars/uniqueid/staff/training/) for instructions on how to complete the processes of the Staff UID System. Staff UID Overview • The Unique Identifier for Staff System (UID Staff) will assign a unique identifier to Staff who participate in the North Carolina public school system. • Unique IDs follow staff between school districts and remain valid even if they move out of state and then return to a NC public school. • Assigning unique identifiers is the first step in DPI’s multi-stage effort to create the NC Common Education Data Analysis and Reporting System (CEDARS). • UID Staff is built on the eScholar Uniq-ID® for Staff product. Overview of UID Staff Process The UID Staff process includes the following 8 steps: 1. Generate CEDARS Staff file from LEA/Charter School Payroll System • Instructions for generating this file can be found at: http://www.ncpublicschools.org/docs/cedars/uniqueid/staff/training/creating-extracts.pdf 2. Upload CEDARS Staff file into UID Staff and Initiates Data Validation • This file can be loaded into the Training Environment (https://cedarstrain.schools.nc.gov/staffid/) so that you can check for errors before loading into production. 3. Download Fix Errors Report (if data errors are found by the UID Staff System) 4. -
Program That Runs Other Programs Unix/Linux Process Hierarchy Shell
shell: program that runs other programs Building a Shell 1 5 Unix/Linux Process Hierarchy shell program that runs other programs on behalf of the user sh Original Unix shell (Stephen Bourne, AT&T Bell Labs, 1977) [0] bash “Bourne-Again” Shell, widely used default on most Unix/Linux/Mac OS X systems others.. init [1] while (true) { Print command prompt. Daemon Login shell Read command line from user. e.g. httpd Parse command line. If command is built-in, do it. Child Child Child Else fork process to execute command. in child: Execute requested command with execv. (never returns) Grandchild Grandchild in parent: Wait for child to complete. } 6 7 1 terminal ≠ shell Background vs. Foreground User interface to shell and other programs. Users generally run one command at a time Graphical (GUI) vs. command-line (CLI) Type command, read output, type another command Command-line terminal (emulator): Input (keyboard) Some programs run “for a long time” Output (screen) $ emacs fizz. txt # shell stuck until ema cs exi ts. A “background” job is a process we don't want to wait for $ emacs boom. txt & # em acs ru ns in backg round [1] 9073 # wh ile sh ell i s... $ gdb ./ umbre lla # im mediat ely r eady f or nex t com mand don't do this with emacs un l es s u si n g X wi nd o ws vers i o n 8 9 Managing Background Jobs Signals Signal: small message notifying a process of event in system Shell waits for and reaps foreground jobs. -
A Brief Introduction to Unix-2019-AMS
A Brief Introduction to Linux/Unix – AMS 2019 Pete Pokrandt UW-Madison AOS Systems Administrator [email protected] Twitter @PTH1 Brief Intro to Linux/Unix o Brief History of Unix o Basics of a Unix session o The Unix File System o Working with Files and Directories o Your Environment o Common Commands Brief Intro to Unix (contd) o Compilers, Email, Text processing o Image Processing o The vi editor History of Unix o Created in 1969 by Kenneth Thompson and Dennis Ritchie at AT&T o Revised in-house until first public release 1977 o 1977 – UC-Berkeley – Berkeley Software Distribution (BSD) o 1983 – Sun Workstations produced a Unix Workstation o AT&T unix -> System V History of Unix o Today – two main variants, but blended o System V (Sun Solaris, SGI, Dec OSF1, AIX, linux) o BSD (Old SunOS, linux, Mac OSX/MacOS) History of Unix o It’s been around for a long time o It was written by computer programmers for computer programmers o Case sensitive, mostly lowercase abbreviations Basics of a Unix Login Session o The Shell – the command line interface, where you enter commands, etc n Some common shells Bourne Shell (sh) C Shell (csh) TC Shell (tcsh) Korn Shell (ksh) Bourne Again Shell (bash) [OSX terminal] Basics of a Unix Login Session o Features provided by the shell n Create an environment that meets your needs n Write shell scripts (batch files) n Define command aliases n Manipulate command history n Automatically complete the command line (tab) n Edit the command line (arrow keys in tcsh) Basics of a Unix Login Session o Logging in to a unix -
System Analysis and Tuning Guide System Analysis and Tuning Guide SUSE Linux Enterprise Server 15 SP1
SUSE Linux Enterprise Server 15 SP1 System Analysis and Tuning Guide System Analysis and Tuning Guide SUSE Linux Enterprise Server 15 SP1 An administrator's guide for problem detection, resolution and optimization. Find how to inspect and optimize your system by means of monitoring tools and how to eciently manage resources. Also contains an overview of common problems and solutions and of additional help and documentation resources. Publication Date: September 24, 2021 SUSE LLC 1800 South Novell Place Provo, UT 84606 USA https://documentation.suse.com Copyright © 2006– 2021 SUSE LLC and contributors. All rights reserved. Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.2 or (at your option) version 1.3; with the Invariant Section being this copyright notice and license. A copy of the license version 1.2 is included in the section entitled “GNU Free Documentation License”. For SUSE trademarks, see https://www.suse.com/company/legal/ . All other third-party trademarks are the property of their respective owners. Trademark symbols (®, ™ etc.) denote trademarks of SUSE and its aliates. Asterisks (*) denote third-party trademarks. All information found in this book has been compiled with utmost attention to detail. However, this does not guarantee complete accuracy. Neither SUSE LLC, its aliates, the authors nor the translators shall be held liable for possible errors or the consequences thereof. Contents About This Guide xii 1 Available Documentation xiii -
What Is a Port
What is a port The Ports Collection is essentially a set of Makefiles, patches, and description files placed in /usr/ports. The port includes instructions on how to build source code, but does not include the actual source code. You can get the source code from a CD-ROM or from the Internet. Source code is distributed in whatever manner the software author desires. Frequently this is a tarred and gzipped file, but it might be compressed with some other tool or even uncompressed. The program source code, whatever form it comes in, is called a ``distfile'' A port skeleton is a minimal set of files that tell your FreeBSD system how to cleanly compile and install a program. Each port skeleton includes: ●A Makefile. The Makefile contains various statements that specify how the application should be compiled and where it should be installed on your system. A distinfo file. This file contains information about the files that must be downloaded to build the port and their checksums, to verify that files have not been corrupted during the download using md5 A files directory. This directory contains patches to make the program compile and install on your FreeBSD system. Patches are basically small files that specify changes to particular files. They are in plain text format, and basically say ``Remove line 10'' or ``Change line 26 to this ...''. Patches are also known as ``diffs'' because they are generated by the diff program. This directory may also contain other files used to build the port. A pkg-descr file. This is a more detailed, often multiple-line, description of the program.