Lab Work 04. Linux/UNIX Command Line Basics
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At—At, Batch—Execute Commands at a Later Time
at—at, batch—execute commands at a later time at [–csm] [–f script] [–qqueue] time [date] [+ increment] at –l [ job...] at –r job... batch at and batch read commands from standard input to be executed at a later time. at allows you to specify when the commands should be executed, while jobs queued with batch will execute when system load level permits. Executes commands read from stdin or a file at some later time. Unless redirected, the output is mailed to the user. Example A.1 1 at 6:30am Dec 12 < program 2 at noon tomorrow < program 3 at 1945 pm August 9 < program 4 at now + 3 hours < program 5 at 8:30am Jan 4 < program 6 at -r 83883555320.a EXPLANATION 1. At 6:30 in the morning on December 12th, start the job. 2. At noon tomorrow start the job. 3. At 7:45 in the evening on August 9th, start the job. 4. In three hours start the job. 5. At 8:30 in the morning of January 4th, start the job. 6. Removes previously scheduled job 83883555320.a. awk—pattern scanning and processing language awk [ –fprogram–file ] [ –Fc ] [ prog ] [ parameters ] [ filename...] awk scans each input filename for lines that match any of a set of patterns specified in prog. Example A.2 1 awk '{print $1, $2}' file 2 awk '/John/{print $3, $4}' file 3 awk -F: '{print $3}' /etc/passwd 4 date | awk '{print $6}' EXPLANATION 1. Prints the first two fields of file where fields are separated by whitespace. 2. Prints fields 3 and 4 if the pattern John is found. -
Configuring UNIX-Specific Settings: Creating Symbolic Links : Snap
Configuring UNIX-specific settings: Creating symbolic links Snap Creator Framework NetApp September 23, 2021 This PDF was generated from https://docs.netapp.com/us-en/snap-creator- framework/installation/task_creating_symbolic_links_for_domino_plug_in_on_linux_and_solaris_hosts.ht ml on September 23, 2021. Always check docs.netapp.com for the latest. Table of Contents Configuring UNIX-specific settings: Creating symbolic links . 1 Creating symbolic links for the Domino plug-in on Linux and Solaris hosts. 1 Creating symbolic links for the Domino plug-in on AIX hosts. 2 Configuring UNIX-specific settings: Creating symbolic links If you are going to install the Snap Creator Agent on a UNIX operating system (AIX, Linux, and Solaris), for the IBM Domino plug-in to work properly, three symbolic links (symlinks) must be created to link to Domino’s shared object files. Installation procedures vary slightly depending on the operating system. Refer to the appropriate procedure for your operating system. Domino does not support the HP-UX operating system. Creating symbolic links for the Domino plug-in on Linux and Solaris hosts You need to perform this procedure if you want to create symbolic links for the Domino plug-in on Linux and Solaris hosts. You should not copy and paste commands directly from this document; errors (such as incorrectly transferred characters caused by line breaks and hard returns) might result. Copy and paste the commands into a text editor, verify the commands, and then enter them in the CLI console. The paths provided in the following steps refer to the 32-bit systems; 64-bit systems must create simlinks to /usr/lib64 instead of /usr/lib. -
Administering Unidata on UNIX Platforms
C:\Program Files\Adobe\FrameMaker8\UniData 7.2\7.2rebranded\ADMINUNIX\ADMINUNIXTITLE.fm March 5, 2010 1:34 pm Beta Beta Beta Beta Beta Beta Beta Beta Beta Beta Beta Beta Beta Beta Beta Beta UniData Administering UniData on UNIX Platforms UDT-720-ADMU-1 C:\Program Files\Adobe\FrameMaker8\UniData 7.2\7.2rebranded\ADMINUNIX\ADMINUNIXTITLE.fm March 5, 2010 1:34 pm Beta Beta Beta Beta Beta Beta Beta Beta Beta Beta Beta Beta Beta Notices Edition Publication date: July, 2008 Book number: UDT-720-ADMU-1 Product version: UniData 7.2 Copyright © Rocket Software, Inc. 1988-2010. All Rights Reserved. Trademarks The following trademarks appear in this publication: Trademark Trademark Owner Rocket Software™ Rocket Software, Inc. Dynamic Connect® Rocket Software, Inc. RedBack® Rocket Software, Inc. SystemBuilder™ Rocket Software, Inc. UniData® Rocket Software, Inc. UniVerse™ Rocket Software, Inc. U2™ Rocket Software, Inc. U2.NET™ Rocket Software, Inc. U2 Web Development Environment™ Rocket Software, Inc. wIntegrate® Rocket Software, Inc. Microsoft® .NET Microsoft Corporation Microsoft® Office Excel®, Outlook®, Word Microsoft Corporation Windows® Microsoft Corporation Windows® 7 Microsoft Corporation Windows Vista® Microsoft Corporation Java™ and all Java-based trademarks and logos Sun Microsystems, Inc. UNIX® X/Open Company Limited ii SB/XA Getting Started The above trademarks are property of the specified companies in the United States, other countries, or both. All other products or services mentioned in this document may be covered by the trademarks, service marks, or product names as designated by the companies who own or market them. License agreement This software and the associated documentation are proprietary and confidential to Rocket Software, Inc., are furnished under license, and may be used and copied only in accordance with the terms of such license and with the inclusion of the copyright notice. -
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. -
Lecture 7 Network Management and Debugging
SYSTEM ADMINISTRATION MTAT.08.021 LECTURE 7 NETWORK MANAGEMENT AND DEBUGGING Prepared By: Amnir Hadachi and Artjom Lind University of Tartu, Institute of Computer Science [email protected] / [email protected] 1 LECTURE 7: NETWORK MGT AND DEBUGGING OUTLINE 1.Intro 2.Network Troubleshooting 3.Ping 4.SmokePing 5.Trace route 6.Network statistics 7.Inspection of live interface activity 8.Packet sniffers 9.Network management protocols 10.Network mapper 2 1. INTRO 3 LECTURE 7: NETWORK MGT AND DEBUGGING INTRO QUOTE: Networks has tendency to increase the number of interdependencies among machine; therefore, they tend to magnify problems. • Network management tasks: ✴ Fault detection for networks, gateways, and critical servers ✴ Schemes for notifying an administrator of problems ✴ General network monitoring, to balance load and plan expansion ✴ Documentation and visualization of the network ✴ Administration of network devices from a central site 4 LECTURE 7: NETWORK MGT AND DEBUGGING INTRO Network Size 160 120 80 40 Management Procedures 0 AUTOMATION ILLUSTRATION OF NETWORK GROWTH VS MGT PROCEDURES AUTOMATION 5 LECTURE 7: NETWORK MGT AND DEBUGGING INTRO • Network: • Subnets + Routers / switches Time to consider • Automating mgt tasks: • shell scripting source: http://www.eventhelix.com/RealtimeMantra/Networking/ip_routing.htm#.VvjkA2MQhIY • network mgt station 6 2. NETWORK TROUBLES HOOTING 7 LECTURE 7: NETWORK MGT AND DEBUGGING NETWORK TROUBLESHOOTING • Many tools are available for debugging • Debugging: • Low-level (e.g. TCP/IP layer) • high-level (e.g. DNS, NFS, and HTTP) • This section progress: ping trace route GENERAL ESSENTIAL TROUBLESHOOTING netstat TOOLS STRATEGY nmap tcpdump … 8 LECTURE 7: NETWORK MGT AND DEBUGGING NETWORK TROUBLESHOOTING • Before action, principle to consider: ✴ Make one change at a time ✴ Document the situation as it was before you got involved. -
Medi-Cal Dental EDI How-To Guide
' I edi Cal Dental _ Electronic Data Interchange HOW-TO GUIDE EDI EDI edi EDI Support Group Phone: (916) 853-7373 Email: [email protected] Revised November 2019 , ] 1 ,edi .. Cal Dental Medi-Cal Dental Program EDI How-To Guide 11/2019 Welcome to Medical Dental Program’s Electronic Data Interchange Program! This How-To Guide is designed to answer questions providers may have about submitting claims electronically. The Medi-Cal Dental Program's Electronic Data Interchange (EDI) program is an efficient alternative to sending paper claims. It will provide more efficient tracking of the Medi-Cal Dental Program claims with faster responses to requests for authorization and payment. Before submitting claims electronically, providers must be enrolled as an EDI provider to avoid rejection of claims. To enroll, providers must complete the Medi-Cal Dental Telecommunications Provider and Biller Application/Agreement (For electronic claim submission), the Provider Service Office Electronic Data Interchange Option Selection Form and Electronic Remittance Advice (ERA) Enrollment Form and return them to the address indicated on those forms. Providers should advise their software vendor that they would like to submit Medi-Cal Dental Program claims electronically, and if they are not yet enrolled in the EDI program, an Enrollment Packet should be requested from the EDI Support department. Enrollment forms are also available on the Medi-Cal Dental Program Web site (www.denti- cal.ca.gov) under EDI, located on the Providers tab. Providers may also submit digitized images of documentation to the Medi-Cal Dental Program. If providers choose to submit conventional radiographs and attachments through the mail, an order for EDI labels and envelopes will need to be placed using the Forms Reorder Request included in the Enrollment Packet and at the end of this How-To Guide. -
Process Text Streams Using Filters
Process Text Streams Using Filters OBJECTIVE: Candidates should should be able to apply filters to text streams. 1 Process Text Streams Using Filters KeyKEY knowledge KNOWLEDGE area(s): AREAS: Send text files and output streams through text utility filters to modify the output using standard UNIX commands found in the GNU textutils package. 2 Process Text Streams Using Filters KEY FILES,TERMS, UTILITIES cat nl tail cut paste tr expand pr unexpand fmt sed uniq head sort wc hexdump split join tac 3 cat cat the editor - used as a rudimentary text editor. cat > short-message we are curious to meet penguins in Prague Crtl+D *Ctrl+D - command is used for ending interactive input. 4 cat cat the reader More commonly used to flush text to stdout. Options: -n number each line of output -b number only non-blank output lines -A show carriage return Example cat /etc/resolv.conf ▶ search mydomain.org nameserver 127.0.0.1 5 tac tac reads back-to-front This command is the same as cat except that the text is read from the last line to the first. tac short-message ▶ penguins in Prague to meet we are curious 6 head or tail using head or tail - often used to analyze logfiles. - by default, output 10 lines of text. List 20 first lines of /var/log/messages: head -n 20 /var/log/messages head -20 /var/log/messages List 20 last lines of /etc/aliases: tail -20 /etc/aliases 7 head or tail The tail utility has an added option that allows one to list the end of a text starting at a given line. -
Humidity Definitions
ROTRONIC TECHNICAL NOTE Humidity Definitions 1 Relative humidity Table of Contents Relative humidity is the ratio of two pressures: %RH = 100 x p/ps where p is 1 Relative humidity the actual partial pressure of the water vapor present in the ambient and ps 2 Dew point / Frost the saturation pressure of water at the temperature of the ambient. point temperature Relative humidity sensors are usually calibrated at normal room temper - 3 Wet bulb ature (above freezing). Consequently, it generally accepted that this type of sensor indicates relative humidity with respect to water at all temperatures temperature (including below freezing). 4 Vapor concentration Ice produces a lower vapor pressure than liquid water. Therefore, when 5 Specific humidity ice is present, saturation occurs at a relative humidity of less than 100 %. 6 Enthalpy For instance, a humidity reading of 75 %RH at a temperature of -30°C corre - 7 Mixing ratio sponds to saturation above ice. by weight 2 Dew point / Frost point temperature The dew point temperature of moist air at the temperature T, pressure P b and mixing ratio r is the temperature to which air must be cooled in order to be saturated with respect to water (liquid). The frost point temperature of moist air at temperature T, pressure P b and mixing ratio r is the temperature to which air must be cooled in order to be saturated with respect to ice. Magnus Formula for dew point (over water): Td = (243.12 x ln (pw/611.2)) / (17.62 - ln (pw/611.2)) Frost point (over ice): Tf = (272.62 x ln (pi/611.2)) / (22.46 - -
Unix Command Line; Editors
Unix command line; editors Karl Broman Biostatistics & Medical Informatics, UW–Madison kbroman.org github.com/kbroman @kwbroman Course web: kbroman.org/AdvData My goal in this lecture is to convince you that (a) command-line-based tools are the things to focus on, (b) you need to choose a powerful, universal text editor (you’ll use it a lot), (c) you want to be comfortable and skilled with each. For your work to be reproducible, it needs to be code-based; don’t touch that mouse! Windows vs. Mac OSX vs. Linux Remote vs. Not 2 The Windows operating system is not very programmer-friendly. Mac OSX isn’t either, but under the hood, it’s just unix. Don’t touch the mouse! Open a terminal window and start typing. I do most of my work directly on my desktop or laptop. You might prefer to work remotely on a server, instead. But I can’t stand having any lag in looking at graphics. If you use Windows... Consider Git Bash (or Cygwin) or turn on the Windows subsystem for linux 3 Cygwin is an effort to get Unix command-line tools in Windows. Git Bash combines git (for version control) and bash (the unix shell); it’s simpler to deal with than Cygwin. Linux is now accessible in Windows 10, but you have to enable it. If you use a Mac... Consider Homebrew and iTerm2 Also the XCode command line tools 4 Homebrew is a packaging system; iTerm2 is a Terminal replacement. The XCode command line tools are a must for most unixy things on a Mac. -
A Brief Introduction to Unix-2019-AMS
Brief Intro to Linux/Unix Brief Intro to Unix (contd) A Brief Introduction to o Brief History of Unix o Compilers, Email, Text processing o Basics of a Unix session o Image Processing Linux/Unix – AMS 2019 o The Unix File System Pete Pokrandt o Working with Files and Directories o The vi editor UW-Madison AOS Systems Administrator o Your Environment [email protected] o Common Commands Twitter @PTH1 History of Unix History of Unix History of Unix o Created in 1969 by Kenneth Thompson and Dennis o Today – two main variants, but blended o It’s been around for a long time Ritchie at AT&T o Revised in-house until first public release 1977 o System V (Sun Solaris, SGI, Dec OSF1, AIX, o It was written by computer programmers for o 1977 – UC-Berkeley – Berkeley Software Distribution (BSD) linux) computer programmers o 1983 – Sun Workstations produced a Unix Workstation o BSD (Old SunOS, linux, Mac OSX/MacOS) o Case sensitive, mostly lowercase o AT&T unix -> System V abbreviations 1 Basics of a Unix Login Session Basics of a Unix Login Session Basics of a Unix Login Session o The Shell – the command line interface, o Features provided by the shell o Logging in to a unix session where you enter commands, etc n Create an environment that meets your needs n login: username n Some common shells n Write shell scripts (batch files) n password: tImpAw$ n Define command aliases (this Is my password At work $) Bourne Shell (sh) OR n Manipulate command history IHateHaving2changeMypasswordevery3weeks!!! C Shell (csh) n Automatically complete the command -
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 -
Cygwin User's Guide
Cygwin User’s Guide Cygwin User’s Guide ii Copyright © Cygwin authors Permission is granted to make and distribute verbatim copies of this documentation provided the copyright notice and this per- mission notice are preserved on all copies. Permission is granted to copy and distribute modified versions of this documentation under the conditions for verbatim copying, provided that the entire resulting derived work is distributed under the terms of a permission notice identical to this one. Permission is granted to copy and distribute translations of this documentation into another language, under the above conditions for modified versions, except that this permission notice may be stated in a translation approved by the Free Software Foundation. Cygwin User’s Guide iii Contents 1 Cygwin Overview 1 1.1 What is it? . .1 1.2 Quick Start Guide for those more experienced with Windows . .1 1.3 Quick Start Guide for those more experienced with UNIX . .1 1.4 Are the Cygwin tools free software? . .2 1.5 A brief history of the Cygwin project . .2 1.6 Highlights of Cygwin Functionality . .3 1.6.1 Introduction . .3 1.6.2 Permissions and Security . .3 1.6.3 File Access . .3 1.6.4 Text Mode vs. Binary Mode . .4 1.6.5 ANSI C Library . .4 1.6.6 Process Creation . .5 1.6.6.1 Problems with process creation . .5 1.6.7 Signals . .6 1.6.8 Sockets . .6 1.6.9 Select . .7 1.7 What’s new and what changed in Cygwin . .7 1.7.1 What’s new and what changed in 3.2 .