Using Bash's History Effectively Using Bash's History Effectively I will attempt here to focus on only one feature of Bash, its command history. There are other good documents on the other features of Bash. Okay, so let's get into it! What is Bash? So, Bash is GNU software and all that that implies (GPL, free, reliable, etc.). The last feature mentioned as one of the major selling points of Bash is "recall". While completion (feature #2) alleviates much of the pain associated with entering long commands and deserves an entire presentation unto itself (stay tuned), completion also adds to the problem in a way, by making longer commands more acceptable. There's also the advent of long options, prevalent in the GNU world. Then, of course, there's always the endless stringing together of commands with pipes (|) to make mini programs (my personal favorite). So, we have this problem where command lines can get very long. That is Bash's history/recall function in a nutshell. ls -latrh /home/jason/Documents | grep work
Bash Reference Manual: This text is a brief description of the features that are present in the Bash shell (version 4.3, 2 February 2014). The Bash home page is This is Edition 4.3, last updated 2 February 2014, of The GNU Bash Reference Manual, for Bash, Version 4.3. Bash contains features that appear in other popular shells, and some features that only appear in Bash. Some of the shells that Bash has borrowed concepts from are the Bourne Shell (`sh'), the Korn Shell (`ksh'), and the C-shell (`csh' and its successor, `tcsh'). This manual is meant as a brief introduction to features found in Bash. 1.1 What is Bash? Bash is the shell, or command language interpreter, for the GNU operating system. Bash is largely compatible with sh and incorporates useful features from the Korn shell ksh and the C shell csh. While the GNU operating system provides other shells, including a version of csh, Bash is the default shell. 1.2 What is a shell? blank A space or tab character. builtin field \a
bash Bash (Bourne again shell) es un programa informático cuya función consiste en interpretar órdenes. Está basado en la shell de Unix y es compatible con POSIX. Fue escrito para el proyecto GNU y es el intérprete de comandos por defecto en la mayoría de las distribuciones de GNU con Linux. Su nombre es un acrónimo de Bourne-Again Shell (otro shell bourne) — haciendo un juego de palabras (born-again significa renacimiento) sobre el Bourne shell (sh), que fue uno de los primeros intérpretes importantes de Unix. Hacia 1978 Bourne era el intérprete distribuido con la versión del sistema operativo Unix Versión 7. Sintaxis de Bash[editar] La sintaxis de órdenes de Bash es un superconjunto de instrucciones basadas en la sintaxis del intérprete Bourne. La sintaxis de Bash tiene muchas extensiones que no proporciona el intérprete Bourne. Acceso a los parámetros[editar] Los guiones de Bash reciben los parámetros que le pasa la shell como $1, $2, ..., $n. for param in "$@" do echo "$param" done Wikilibros
How To Use UUID To Mount Partitions / Volumes Under Ubuntu Linux Q. Can you explain UUID concept related to Linux ext3 partitions and storage devices? How do I update /etc/fstab using UUID under Ubuntu Linux or any other Linux distro? A. UUID and Partitions Linux's ext2/ext3 filesystem uses UUID to identify partitions. UUID benefits As a sesonded UNIX admin I have to deal with various data storage technologies such as SAN, iSCSI, DAS, scsi disks volumes. However, UUID may be not very useful for single desktop computer at home as you do not have enterprise grade storage and requirements. How do I find out UUID for /dev/sdb2? To probe filesystem type and read label and uuid for /dev/sdb2 (or any other device) use vol_id command: # vol_id --uuid {/dev/device} # vol_id --uuid /dev/sdb2 $ sudo vol_id --uuid /dev/sdb2 Sample output: 41c22818-fbad-4da6-8196-c816df0b7aa8 List all UUIDs Use blkid command-line utility to locate/print block device attributes: $ sudo blkid Sample output: How do I use UUID to update /etc/fstab file? Simply use following syntax:
Bash Tips And Tricks From My Own Experience - Several Instalments Instalment 2:- How I use POSIX utilities to process text One of the problems I have very often is that I would like to extract usable links from a very large web page the source code of which looks messy (when I look at it using "View Source").Have you ever looked at a cool web page with nice visual effects and the first thing that comes to your mind is "How did he do that? I would also like to have those effects on my own site." Now you want to make some sense out of that never ending HTML string.You probably already have your favorite tool handy to do that easily, and that's fine, but my objective here is to showcase the use of POSIX utilities, that's why I will show you what might look like the hard way of doing it. For simplicity, I will assume that the above HTML code is stored in file messyHTML.html. My objective is to obtain a clean list of all the links pointing to jpg files, each one on its own line.Something like this: OK, so what did I do? cat messyHTML.html | sed 's#<#\<#g' 's#^.
FOLDOC Computing Dictionary BASH Programming - Introduction HOW-TO Next Previous Contents BASH Programming - Introduction HOW-TO by Mike G mikkey at dynamo.com.ar Thu Jul 27 09:36:18 ART 2000 This article intends to help you to start programming basic-intermediate shell scripts. 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. 13.1 Ways Calling BASH 14. Vim tips: Folding fun The problem with writing and editing on a computer, versus having words on paper, is that it's usually hard to compare text from different sections of a document when they don't fit on the screen together. One way to do it is to use Vim's viewports feature. Another is to "fold" the text. Using Vim's folding features, you can tuck away portions of a file's text so that they're out of sight until you want to work with them again. Here's how. Vim's folding commands begin with z -- which, as the Vim docs point out, sort of looks like a folded piece of paper. Creating folds Let's start with some simple folding actions. Folding also works in visual mode. Another option is to specify a range in command mode. Vim can also make some smart text selections. As an added bonus, Vim also recognizes nested blocks, so it will create the fold based on matching delimiters, and not the first closing bracket it comes across. Finally, you can create a fold from the cursor position to a search result.
GNU Bash Reference Manual - Table of Contents This text is a brief description of the features that are present in the Bash shell (version 3.2, 28 September 2006). This is Edition 3.2, last updated 28 September 2006, of The GNU Bash Reference Manual, for Bash, Version 3.2. Bash contains features that appear in other popular shells, and some features that only appear in Bash. Some of the shells that Bash has borrowed concepts from are the Bourne Shell (‘sh’), the Korn Shell (‘ksh’), and the C-shell (‘csh’ and its successor, ‘tcsh’). This manual is meant as a brief introduction to features found in Bash. This text is a brief description of the features that are present in the Bash shell (version 3.2, 28 September 2006).
Technology Review: The Authority on the Future of Technology Linux: de Novato a Novato: Bourne Shell, tutorial en español Página siguientePágina anteriorÍndice general 9. Bourne Shell, tutorial en español 9.1 Creación de comandos y programas usando el shell Además de usar el shell para ejecutar comandos, puedes usar su lenguaje de programación para escribir tus propios comandos o programas. Puedes poner comandos en el fichero (conocido como shell script) y después ejecutar el fichero como un comando o programa. EL Bourne shell (sh) está disponible en todos los sistemas UNIX. 9.2 Creación y ejecución de shell scripts simples Para crear un shell script simple, debes poner líneas de comando en un fichero, ponle los permisos de acceso apropiados y después ejecuta el fichero. EJEMPLO : Este es el contenido de un shell script llamado display : cat display # Este script displaya la fecha, hora, nombre de # usuario y directorio actual echo "Fecha y hora:" date echo echo "Tu usuario es: `whoami` \\n" echo "Tu directorio actual es: \\c" pwd - whoami : displaya el usuario actual chmod u+rwx display chmod go+rx display ? #! #!
Getting Started with TeX, LaTeX, and Friends - TeX Users Group This page is for the benefit of new TeX system users. As such, it tries to be short and simple. (An even shorter getting-started document is available.) What's going on here? TeX is a typesetting language. Here are some links with further background: The Pointers to Frequently Asked Questions document provides a short overview of the TeX world. Installing TeX and LaTeX If you are looking to install a complete system, we recommend TeX Live for Unix/GNU/Linux, MacTeX for MacOSX, and proTeXt for Windows. There are many other TeX implementations, some free software, some shareware, some proprietary/commercial. Online (La)TeX documentation Here is just a little of the principal TeX documentation available on the web. LaTeX: LaTeX Documentation Pointers has references to documentation for many common LaTeX tasks (by Jim Hefferon). Plain TeX: TeX by Topic, A TeXnician's Reference, by Victor Eijkhout. Fonts: a discussion of the fonts available for use with TeX is available separately. Books to buy
UNIX and Linux Index Page Home Software that I have written. Linux Linux Book-marks Replacing Win95? Video Modes My perl program that generates modelines for XFree86 Tutorials Useful information mostly written by me, ( with the exception of the bash manpage ) The Font HOWTO. Linux Software Reviews- Word Processors Graphics tools (User Friendly)Text Editors GUI Mailtools File managers and FTP clients Project Independence An ease of use oriented linux project that I am working on. Quotes From Linux Hardware Shops Medium cost IDE boxes Want linux pre-installed, but can't afford a machine from VaResearch ? SCSI Dream Machines Want a SCSI dream machine with linux pre-installed ? LDP products page Has a very good list of linux hardware vendors. My Vim page
Linux: What are some time-saving tips that every Linux user should know