Shell Scripting and System Variables HORT 59000 Lecture 5 Instructor: Kranthi Varala Text Editors
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Fundamentals of UNIX Lab 5.4.6 – Listing Directory Information (Estimated Time: 30 Min.)
Fundamentals of UNIX Lab 5.4.6 – Listing Directory Information (Estimated time: 30 min.) Objectives: • Learn to display directory and file information • Use the ls (list files) command with various options • Display hidden files • Display files and file types • Examine and interpret the results of a long file listing • List individual directories • List directories recursively Background: In this lab, the student will use the ls command, which is used to display the contents of a directory. This command will display a listing of all files and directories within the current directory or specified directory or directories. If no pathname is given as an argument, ls will display the contents of the current directory. The ls command will list any subdirectories and files that are in the current working directory if a pathname is specified. The ls command will also default to a wide listing and display only file and directory names. There are many options that can be used with the ls command, which makes this command one of the more flexible and useful UNIX commands. Command Format: ls [-option(s)] [pathname[s]] Tools / Preparation: a) Before starting this lab, the student should review Chapter 5, Section 4 – Listing Directory Contents b) The student will need the following: 1. A login user ID, for example user2, and a password assigned by their instructor. 2. A computer running the UNIX operating system with CDE. 3. Networked computers in classroom. Notes: 1 - 5 Fundamentals UNIX 2.0—-Lab 5.4.6 Copyright 2002, Cisco Systems, Inc. Use the diagram of the sample Class File system directory tree to assist with this lab. -
Windows Command Prompt Cheatsheet
Windows Command Prompt Cheatsheet - Command line interface (as opposed to a GUI - graphical user interface) - Used to execute programs - Commands are small programs that do something useful - There are many commands already included with Windows, but we will use a few. - A filepath is where you are in the filesystem • C: is the C drive • C:\user\Documents is the Documents folder • C:\user\Documents\hello.c is a file in the Documents folder Command What it Does Usage dir Displays a list of a folder’s files dir (shows current folder) and subfolders dir myfolder cd Displays the name of the current cd filepath chdir directory or changes the current chdir filepath folder. cd .. (goes one directory up) md Creates a folder (directory) md folder-name mkdir mkdir folder-name rm Deletes a folder (directory) rm folder-name rmdir rmdir folder-name rm /s folder-name rmdir /s folder-name Note: if the folder isn’t empty, you must add the /s. copy Copies a file from one location to copy filepath-from filepath-to another move Moves file from one folder to move folder1\file.txt folder2\ another ren Changes the name of a file ren file1 file2 rename del Deletes one or more files del filename exit Exits batch script or current exit command control echo Used to display a message or to echo message turn off/on messages in batch scripts type Displays contents of a text file type myfile.txt fc Compares two files and displays fc file1 file2 the difference between them cls Clears the screen cls help Provides more details about help (lists all commands) DOS/Command Prompt help command commands Source: https://technet.microsoft.com/en-us/library/cc754340.aspx. -
Command Line Interface Specification Windows
Command Line Interface Specification Windows Online Backup Client version 4.3.x 1. Introduction The CloudBackup Command Line Interface (CLI for short) makes it possible to access the CloudBackup Client software from the command line. The following actions are implemented: backup, delete, dir en restore. These actions are described in more detail in the following paragraphs. For all actions applies that a successful action is indicated by means of exit code 0. In all other cases a status code of 1 will be used. 2. Configuration The command line client needs a configuration file. This configuration file may have the same layout as the configuration file for the full CloudBackup client. This configuration file is expected to reside in one of the following folders: CLI installation location or the settings folder in the CLI installation location. The name of the configuration file must be: Settings.xml. Example: if the CLI is installed in C:\Windows\MyBackup\, the configuration file may be in one of the two following locations: C:\Windows\MyBackup\Settings.xml C:\Windows\MyBackup\Settings\Settings.xml If both are present, the first form has precedence. Also the customer needs to edit the CloudBackup.Console.exe.config file which is located in the program file directory and edit the following line: 1 <add key="SettingsFolder" value="%settingsfilelocation%" /> After making these changes the customer can use the CLI instruction to make backups and restore data. 2.1 Configuration Error Handling If an error is found in the configuration file, the command line client will issue an error message describing which value or setting or option is causing the error and terminate with an exit value of 1. -
Bash Shell Scripts
Bash Shell Scripts Writing Bash shell scripts Bash shell scripts are text files Text files most efficiently built with programming editors (emacs or vi) File must be executable and in search path chmod 700 my_script PATH environment variable may not include .! An example shell script: #!/bin/bash #My first script echo "Hello World!" Bash Shell Scripts Writing Bash shell scripts Compile a Verilog file with vlog #!/bin/bash if [ ! d work ] ; then echo work does not exist, making it vlib work fi if [ ! s adder.v ] ; then vlog adder.v fi work directory must exist before compilation Get scripts via wget, eg: wget http://web.engr.oregonstate.edu/~traylor/ece474/script --- Bash Shell Scripts Writing Bash shell scripts File attribute checking #!/bin/bash if [ ! s junk_dir ] ; then mkdir junk_dir fi Spaces around brackets are needed! File attribute checking d exists and is a directory e, a file exists f exists and is a regular file s file exists and is not empty --- Bash Shell Scripts Writing Bash shell scripts Compile Verilog then run a simultion #!/bin/bash if [ ! -d "work" ] ; then vlib work fi if [ -s "adder.v" ] ; then vlog adder.v #runs simulation with a do file and no GUI vsim adder -do do.do quiet c else echo verilog file missing fi --- Bash Shell Scripts Writing Bash shell scripts vsim command and arguments vsim entity_name do dofile.do quiet -c -quiet (do not report loading file messages) -c (console mode, no GUI) -do (run vsim from a TCL do file) +nowarnTFMPC (don’t warn about mismatched ports, scary) +nowarnTSCALE (don’t warn about timing mismatches) Try vsim help for command line arguements --- Bash Shell Scripts Writing Bash Shell Scripts (TCL Script) In another text file, we create a TCL script with commands for the simulator. -
Tcl/Tk for Xspecta Michael Flynn Tcl: Tcl (Ie Tool Command Language)
Tcl/Tk for XSPECTa Michael Flynn Tcl: Tcl (i.e. Tool Command Language) is an open source scripting language similar to other modern script languages such as Perl or Python. It is substantially more powerful than UNIX/LINUX/POSIX shell script languages such as the Bourne Shell (sh), the C Shell (csh), or the Korn Shell (https://en.wikipedia.org/wiki/Shell_script). Tcl and its associated graphical user interface toolkit, Tk, were developed by John Ousterhout of the University of California. Ousterhout's group subsequently continued development of Tcl/Tk while at Sun Microsystems and later at Scriptics. Continued development is now done by an open source project team. The language has been popular for developing graphic applications and is available as public domain software for almost all computer systems (Linux, Windows and MacOS). Installation: Tcl/Tk software can be found at: http://www.activestate.com/activeTcl Binary Windows installers are available from this site for both 32 and 64 bit systems as a Free Community Edition. The lab modules were last validated with Version 8.6.4.1 but more recent versions should not be problematic. Unless Tcl has already been installed on the system being used, download and install the software from ActiveState. The installer should be run with administrative privileges. On Windows7, you should right click and 'run as administrator'. Installing with elevated privilege will allow the registry changes that map Tcl extensions and will configure the un-installer database, making later removal of ActiveTcl easier. The ActiveState default installation directory is C:/Tcl. During the installation, the installer will ask if you want this changed. -
Your Performance Task Summary Explanation
Lab Report: 11.2.5 Manage Files Your Performance Your Score: 0 of 3 (0%) Pass Status: Not Passed Elapsed Time: 6 seconds Required Score: 100% Task Summary Actions you were required to perform: In Compress the D:\Graphics folderHide Details Set the Compressed attribute Apply the changes to all folders and files In Hide the D:\Finances folder In Set Read-only on filesHide Details Set read-only on 2017report.xlsx Set read-only on 2018report.xlsx Do not set read-only for the 2019report.xlsx file Explanation In this lab, your task is to complete the following: Compress the D:\Graphics folder and all of its contents. Hide the D:\Finances folder. Make the following files Read-only: D:\Finances\2017report.xlsx D:\Finances\2018report.xlsx Complete this lab as follows: 1. Compress a folder as follows: a. From the taskbar, open File Explorer. b. Maximize the window for easier viewing. c. In the left pane, expand This PC. d. Select Data (D:). e. Right-click Graphics and select Properties. f. On the General tab, select Advanced. g. Select Compress contents to save disk space. h. Click OK. i. Click OK. j. Make sure Apply changes to this folder, subfolders and files is selected. k. Click OK. 2. Hide a folder as follows: a. Right-click Finances and select Properties. b. Select Hidden. c. Click OK. 3. Set files to Read-only as follows: a. Double-click Finances to view its contents. b. Right-click 2017report.xlsx and select Properties. c. Select Read-only. d. Click OK. e. -
Project1: Build a Small Scanner/Parser
Project1: Build A Small Scanner/Parser Introducing Lex, Yacc, and POET cs5363 1 Project1: Building A Scanner/Parser Parse a subset of the C language Support two types of atomic values: int float Support one type of compound values: arrays Support a basic set of language concepts Variable declarations (int, float, and array variables) Expressions (arithmetic and boolean operations) Statements (assignments, conditionals, and loops) You can choose a different but equivalent language Need to make your own test cases Options of implementation (links available at class web site) Manual in C/C++/Java (or whatever other lang.) Lex and Yacc (together with C/C++) POET: a scripting compiler writing language Or any other approach you choose --- must document how to download/use any tools involved cs5363 2 This is just starting… There will be two other sub-projects Type checking Check the types of expressions in the input program Optimization/analysis/translation Do something with the input code, output the result The starting project is important because it determines which language you can use for the other projects Lex+Yacc ===> can work only with C/C++ POET ==> work with POET Manual ==> stick to whatever language you pick This class: introduce Lex/Yacc/POET to you cs5363 3 Using Lex to build scanners lex.yy.c MyLex.l lex/flex lex.yy.c a.out gcc/cc Input stream a.out tokens Write a lex specification Save it in a file (MyLex.l) Compile the lex specification file by invoking lex/flex lex MyLex.l A lex.yy.c file is generated -
NETSTAT Command
NETSTAT Command | NETSTAT Command | Use the NETSTAT command to display network status of the local host. | | ┌┐────────────── | 55──NETSTAT─────6─┤ Option ├─┴──┬────────────────────────────────── ┬ ─ ─ ─ ────────────────────────────────────────5% | │┌┐───────────────────── │ | └─(──SELect───6─┤ Select_String ├─┴ ─ ┘ | Option: | ┌┐─COnn────── (1, 2) ──────────────── | ├──┼─────────────────────────── ┼ ─ ──────────────────────────────────────────────────────────────────────────────┤ | ├─ALL───(2)──────────────────── ┤ | ├─ALLConn─────(1, 2) ────────────── ┤ | ├─ARp ipaddress───────────── ┤ | ├─CLients─────────────────── ┤ | ├─DEvlinks────────────────── ┤ | ├─Gate───(3)─────────────────── ┤ | ├─┬─Help─ ┬─ ───────────────── ┤ | │└┘─?──── │ | ├─HOme────────────────────── ┤ | │┌┐─2ð────── │ | ├─Interval─────(1, 2) ─┼───────── ┼─ ┤ | │└┘─seconds─ │ | ├─LEVel───────────────────── ┤ | ├─POOLsize────────────────── ┤ | ├─SOCKets─────────────────── ┤ | ├─TCp serverid───(1) ─────────── ┤ | ├─TELnet───(4)───────────────── ┤ | ├─Up──────────────────────── ┤ | └┘─┤ Command ├───(5)──────────── | Command: | ├──┬─CP cp_command───(6) ─ ┬ ────────────────────────────────────────────────────────────────────────────────────────┤ | ├─DELarp ipaddress─ ┤ | ├─DRop conn_num──── ┤ | └─RESETPool──────── ┘ | Select_String: | ├─ ─┬─ipaddress────(3) ┬ ─ ───────────────────────────────────────────────────────────────────────────────────────────┤ | ├─ldev_num─────(4) ┤ | └─userid────(2) ─── ┘ | Notes: | 1 Only ALLCON, CONN and TCP are valid with INTERVAL. | 2 The userid -
GNU M4, Version 1.4.7 a Powerful Macro Processor Edition 1.4.7, 23 September 2006
GNU M4, version 1.4.7 A powerful macro processor Edition 1.4.7, 23 September 2006 by Ren´eSeindal This manual is for GNU M4 (version 1.4.7, 23 September 2006), a package containing an implementation of the m4 macro language. Copyright c 1989, 1990, 1991, 1992, 1993, 1994, 2004, 2005, 2006 Free Software Foundation, Inc. Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.2 or any later version published by the Free Software Foundation; with no Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts. A copy of the license is included in the section entitled “GNU Free Documentation License.” i Table of Contents 1 Introduction and preliminaries ................ 3 1.1 Introduction to m4 ............................................. 3 1.2 Historical references ............................................ 3 1.3 Invoking m4 .................................................... 4 1.4 Problems and bugs ............................................. 8 1.5 Using this manual .............................................. 8 2 Lexical and syntactic conventions ............ 11 2.1 Macro names ................................................. 11 2.2 Quoting input to m4........................................... 11 2.3 Comments in m4 input ........................................ 11 2.4 Other kinds of input tokens ................................... 12 2.5 How m4 copies input to output ................................ 12 3 How to invoke macros........................ -
Shell Script Getopts Example
Shell Script Getopts Example Gail is constrainedly cryoscopic after delegable Hilbert sag his parcloses illuminatingly. Gonzales often tootle irresistibly when tripersonal Giordano discomposed dissonantly and buffer her Barbarossa. Robert misdraws rompishly. Find that getopts script example we use later will contain whitespace separation with command Instantly share code, notes, and snippets. OPTARG is set to the period character found. They cease in many cases unneeded and brief fact that cartoon always press them its just like matter of personal coding style. File or directory or found. Operator precedence is used when there within five is more arguments. Typically, shell scripts use getopts to parse arguments passed to them. There did many ways to against your remedy environment. Nothing gets printed when no command line options are provided. The return status is zero unless an outcome is encountered while determining the name avid the he directory within an invalid option is supplied. The exit code will be success failure. Log in charge use details from one require these accounts. How does log lumber and cpu usage by an application? Now consider running it bore an unsupported option. No need only pass the positional parameters through to borrow external program. How can I check took a directory exists in a candy shell script? What extent its purpose? When optional, the fashion can buckle on led off additional functionality, as ugly a boolean option. In those cases, it contains a pointer to that parameter. How environment check ride a variable is set to Bash? Connect and deploy knowledge write a single location that is structured and fatigue to search. -
A Highly Configurable High-Level Synthesis Functional Pattern Library
electronics Article A Highly Configurable High-Level Synthesis Functional Pattern Library Lan Huang 1,2,‡, Teng Gao 1,‡, Dalin Li 1,†, Zihao Wang 1 and Kangping Wang 1,2,* 1 College of Computer Science and Technology, Jilin University, Changchun 130012, China; [email protected] (L.H.); [email protected] (T.G.); [email protected] (D.L.); [email protected] (Z.W.) 2 Key Laboratory of Symbolic Computation and Knowledge Engineering, Jilin University, Changchun 130012, China * Correspondence: [email protected] † Current address: Zhuhai Laboratory of Key Laboratory of Symbol Computation and Knowledge Engineering of Ministry of Education, Department of Computer Science and Technology, Zhuhai College of Jilin University, Zhuhai 519041, China. ‡ These authors contributed equally to this work. Abstract: FPGA has recently played an increasingly important role in heterogeneous computing, but Register Transfer Level design flows are not only inefficient in design, but also require designers to be familiar with the circuit architecture. High-level synthesis (HLS) allows developers to design FPGA circuits more efficiently with a more familiar programming language, a higher level of abstraction, and automatic adaptation of timing constraints. When using HLS tools, such as Xilinx Vivado HLS, specific design patterns and techniques are required in order to create high-performance circuits. Moreover, designing efficient concurrency and data flow structures requires a deep understanding of the hardware, imposing more learning costs on programmers. In this paper, we propose a set of functional patterns libraries based on the MapReduce model, implemented by C++ templates, Citation: Huang, L.; Gao,T.; Li, D.; which can quickly implement high-performance parallel pipelined computing models on FPGA with Wang, Z.; Wang, K. -
GNU M4, Version 1.4.19 a Powerful Macro Processor Edition 1.4.19, 28 May 2021
GNU M4, version 1.4.19 A powerful macro processor Edition 1.4.19, 28 May 2021 by Ren´eSeindal, Fran¸coisPinard, Gary V. Vaughan, and Eric Blake ([email protected]) This manual (28 May 2021) is for GNU M4 (version 1.4.19), a package containing an implementation of the m4 macro language. Copyright c 1989{1994, 2004{2014, 2016{2017, 2020{2021 Free Software Foundation, Inc. Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.3 or any later version published by the Free Software Foundation; with no Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts. A copy of the license is included in the section entitled \GNU Free Documentation License." i Table of Contents 1 Introduction and preliminaries ::::::::::::::::: 3 1.1 Introduction to m4 :::::::::::::::::::::::::::::::::::::::::::::: 3 1.2 Historical references :::::::::::::::::::::::::::::::::::::::::::: 3 1.3 Problems and bugs ::::::::::::::::::::::::::::::::::::::::::::: 4 1.4 Using this manual :::::::::::::::::::::::::::::::::::::::::::::: 5 2 Invoking m4::::::::::::::::::::::::::::::::::::::: 7 2.1 Command line options for operation modes ::::::::::::::::::::: 7 2.2 Command line options for preprocessor features ::::::::::::::::: 8 2.3 Command line options for limits control ::::::::::::::::::::::: 10 2.4 Command line options for frozen state ::::::::::::::::::::::::: 11 2.5 Command line options for debugging :::::::::::::::::::::::::: 11 2.6 Specifying input files on the command line :::::::::::::::::::::