Persons with a Disability: Labor Force Characteristics — 2020
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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. -
1 A) Login to the System B) Use the Appropriate Command to Determine Your Login Shell C) Use the /Etc/Passwd File to Verify the Result of Step B
CSE ([email protected] II-Sem) EXP-3 1 a) Login to the system b) Use the appropriate command to determine your login shell c) Use the /etc/passwd file to verify the result of step b. d) Use the ‘who’ command and redirect the result to a file called myfile1. Use the more command to see the contents of myfile1. e) Use the date and who commands in sequence (in one line) such that the output of date will display on the screen and the output of who will be redirected to a file called myfile2. Use the more command to check the contents of myfile2. 2 a) Write a “sed” command that deletes the first character in each line in a file. b) Write a “sed” command that deletes the character before the last character in each line in a file. c) Write a “sed” command that swaps the first and second words in each line in a file. a. Log into the system When we return on the system one screen will appear. In this we have to type 100.0.0.9 then we enter into editor. It asks our details such as Login : krishnasai password: Then we get log into the commands. bphanikrishna.wordpress.com FOSS-LAB Page 1 of 10 CSE ([email protected] II-Sem) EXP-3 b. use the appropriate command to determine your login shell Syntax: $ echo $SHELL Output: $ echo $SHELL /bin/bash Description:- What is "the shell"? Shell is a program that takes your commands from the keyboard and gives them to the operating system to perform. -
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 -
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). -
“Linux at the Command Line” Don Johnson of BU IS&T We’Ll Start with a Sign in Sheet
“Linux at the Command Line” Don Johnson of BU IS&T We’ll start with a sign in sheet. We’ll end with a class evaluation. We’ll cover as much as we can in the time allowed; if we don’t cover everything, you’ll pick it up as you continue working with Linux. This is a hands-on, lab class; ask questions at any time. Commands for you to type are in BOLD The Most Common O/S Used By BU Researchers When Working on a Server or Computer Cluster Linux is a Unix clone begun in 1991 and written from scratch by Linus Torvalds with assistance from a loosely-knit team of hackers across the Net. 64% of the world’s servers run some variant of Unix or Linux. The Android phone and the Kindle run Linux. a set of small Linux is an O/S core programs written by written by Linus Richard Stallman and Torvalds and others others. They are the AND GNU utilities. http://www.gnu.org/ Network: ssh, scp Shells: BASH, TCSH, clear, history, chsh, echo, set, setenv, xargs System Information: w, whoami, man, info, which, free, echo, date, cal, df, free Command Information: man, info Symbols: |, >, >>, <, ;, ~, ., .. Filters: grep, egrep, more, less, head, tail Hotkeys: <ctrl><c>, <ctrl><d> File System: ls, mkdir, cd, pwd, mv, touch, file, find, diff, cmp, du, chmod, find File Editors: gedit, nedit You need a “xterm” emulation – software that emulates an “X” terminal and that connects using the “SSH” Secure Shell protocol. ◦ Windows Use StarNet “X-Win32:” http://www.bu.edu/tech/support/desktop/ distribution/xwindows/xwin32/ ◦ Mac OS X “Terminal” is already installed Why? Darwin, the system on which Apple's Mac OS X is built, is a derivative of 4.4BSD-Lite2 and FreeBSD. -
Unix/Linux Command Reference
Unix/Linux Command Reference .com File Commands System Info ls – directory listing date – show the current date and time ls -al – formatted listing with hidden files cal – show this month's calendar cd dir - change directory to dir uptime – show current uptime cd – change to home w – display who is online pwd – show current directory whoami – who you are logged in as mkdir dir – create a directory dir finger user – display information about user rm file – delete file uname -a – show kernel information rm -r dir – delete directory dir cat /proc/cpuinfo – cpu information rm -f file – force remove file cat /proc/meminfo – memory information rm -rf dir – force remove directory dir * man command – show the manual for command cp file1 file2 – copy file1 to file2 df – show disk usage cp -r dir1 dir2 – copy dir1 to dir2; create dir2 if it du – show directory space usage doesn't exist free – show memory and swap usage mv file1 file2 – rename or move file1 to file2 whereis app – show possible locations of app if file2 is an existing directory, moves file1 into which app – show which app will be run by default directory file2 ln -s file link – create symbolic link link to file Compression touch file – create or update file tar cf file.tar files – create a tar named cat > file – places standard input into file file.tar containing files more file – output the contents of file tar xf file.tar – extract the files from file.tar head file – output the first 10 lines of file tar czf file.tar.gz files – create a tar with tail file – output the last 10 lines -
Covid-19 and the Rights of Persons with Disabilities: Guidance
HUMAN RIGHTS AT THE HEART OF RESPONSE TOPICS IN FOCUS COVID-19 AND THE RIGHTS OF PERSONS WITH DISABILITIES 29 April 2020 COVID-19 AND THE RIGHTS OF PERSONS WITH DISABILITIES: GUIDANCE 1. What is the impact of COVID-19 on the right to health of persons with disabilities? 2. What is the impact of COVID-19 on persons with disabilities who are living in institutions? 3. What is the impact of COVID-19 on the right of persons with disabilities to live in the community? 4. What is the impact of COVID-19 on work, income and livelihood of persons with disabilities? 5. What is the impact of COVID-19 on the right to education of persons with disabilities? 6. What is the impact of COVID-19 on the right of persons with disabilities to protection from violence? 7. What is the impact of COVID-19 on specific population groups in which persons with disabilities are overrepresented? a. prisoners with disabilities b. persons with disabilities without adequate housing OVERVIEW While the COVID-19 pandemic threatens all members of society, persons with disabilities are disproportionately impacted due to attitudinal, environmental and institutional barriers that are reproduced in the COVID-19 response. Many persons with disabilities have pre-existing health conditions that make them more susceptible to contracting the virus, experiencing more severe symptoms upon infection, leading to elevated levels of death. During the COVID-19 crisis, persons with disabilities who are dependent on support for their daily living may find themselves isolated and unable to survive during lockdown measures, while those living in institutions are particularly vulnerable, as evidenced by the overwhelming numbers of deaths in residential care homes and psychiatric facilities. -
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. -
Exercise I: Basic Unix for Manipulating NGS Data
Exercise I: Basic Unix for manipulating NGS data C. Hahn, July 2014 The purpose of this exercise is to practice manipulating NGS (Next Generation Sequencing) data using simple but incredibly powerful Unix commands. Try to solve the below tasks using your Unix skills. Do not hesitate to consult Google for help!! Hints for every task can be found on page 3 below. Possible solutions are suggested on page 4. 1. Download the testdata from https://www.dropbox.com/s/wcanmej6z03yfmt/testdata_1.tar?dl=0. Create a directory (exercise_1) in your home directory and copy the archive testdata.tar from ~/Downloads/ to this directory. 2. Decompress the archive. 3. Examine the content of the data files. For basic information on fastq format please visit: http://en.wikipedia.org/wiki/FASTQ_format. With this information try to interpret the content of your data files. Do you Know what all the lines represent? a) Which quality encoding (which offset) do these files use? b) What is the header of the third read in the file? Is this a single-end (forward) or a paired-end (reverse) read? c) What is the header of the last read in the file? Is this a forward or reverse read? 4. How many lines does the file have? 5. How many reads does the file contain? 6. How many single-end (“se” also referred to as forward reads) reads and how many paired-end (“pe” also reverse reads) reads does the file contain? 7. Extract all se/pe reads and write them to separate files testdata_1.fastq and testdata_2.fastq. -
Block Icmp Ping Requests
Block Icmp Ping Requests Lenard often unpenned stutteringly when pedigreed Barton calques wittingly and forsook her stowage. Garcia is theropod vermiculatedand congregate unprosperously. winningly while nonnegotiable Timothy kedges and sever. Gyrate Fazeel sometimes hasting any magnetron Now we generally adds an email address of icmp block ping requests That after a domain name, feel free scans on or not sent by allowing through to append this friendship request. Might be incremented on your Echo press and the ICMP Echo reply messages are commonly as! Note that ping mechanism blocks ping icmp block not enforced for os. This case you provide personal information on. Send to subvert host directly, without using routing tables. Examples may be blocked these. Existence and capabilities is switched on or disparity the protocol IP protocol suite, but tcp is beat of. We are no latency and that address or another icmp message type of icmp ping so via those command in this information and get you? Before assigning it is almost indistinguishable from. Microsoft Windows found themselves unable to download security updates from Microsoft; Windows Update would boost and eventually time out. Important mechanisms are early when the ICMP protocol is restricted. Cisco device should be valuable so a host that block icmp? Add a normal packet will update would need access and others from. Now check if you? As an organization, you could weigh the risks of allowing this traffic against the risks of denying this traffic and causing potential users troubleshooting difficulties. Icmp block icmp packets. Please select create new know how long it disables a tcp syn flood option available in specific types through stateful firewalls can have old kernels. -
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 -
Useful Commands in Linux and Other Tools for Quality Control
Useful commands in Linux and other tools for quality control Ignacio Aguilar INIA Uruguay 05-2018 Unix Basic Commands pwd show working directory ls list files in working directory ll as before but with more information mkdir d make a directory d cd d change to directory d Copy and moving commands To copy file cp /home/user/is . To copy file directory cp –r /home/folder . to move file aa into bb in folder test mv aa ./test/bb To delete rm yy delete the file yy rm –r xx delete the folder xx Redirections & pipe Redirection useful to read/write from file !! aa < bb program aa reads from file bb blupf90 < in aa > bb program aa write in file bb blupf90 < in > log Redirections & pipe “|” similar to redirection but instead to write to a file, passes content as input to other command tee copy standard input to standard output and save in a file echo copy stream to standard output Example: program blupf90 reads name of parameter file and writes output in terminal and in file log echo par.b90 | blupf90 | tee blup.log Other popular commands head file print first 10 lines list file page-by-page tail file print last 10 lines less file list file line-by-line or page-by-page wc –l file count lines grep text file find lines that contains text cat file1 fiel2 concatenate files sort sort file cut cuts specific columns join join lines of two files on specific columns paste paste lines of two file expand replace TAB with spaces uniq retain unique lines on a sorted file head / tail $ head pedigree.txt 1 0 0 2 0 0 3 0 0 4 0 0 5 0 0 6 0 0 7 0 0 8 0 0 9 0 0 10