ROSEdu Tech Talks Prezentarea 11: Utilizarea Eficientă a Liniei de Comandă

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  • 8/8/2019 ROSEdu Tech Talks Prezentarea 11: Utilizarea Eficient a Liniei de Comand

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    Linia de comanda CLI vs. GUI Facilitat,i shell Facilitat,i libreadline Extra juice Concluzii Intrebari

    Utilizarea eficienta a liniei de comanda

    From GUI-zero to CLI-hero

    Razvan [email protected]

    ROSEdu Tech Talks

    9 octombrie 2010

    Razvan Deaconescu ROSEdu Tech Talks

    CLI Eficient

    http://find/http://goback/
  • 8/8/2019 ROSEdu Tech Talks Prezentarea 11: Utilizarea Eficient a Liniei de Comand

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    Linia de comanda CLI vs. GUI Facilitat,i shell Facilitat,i libreadline Extra juice Concluzii Intrebari

    1 Linia de comanda

    2 CLI vs. GUI

    3 Facilitat, i shell

    4 Facilitat, i libreadline

    5 Extra juice

    6 Concluzii

    7 Intrebari

    Razvan Deaconescu ROSEdu Tech Talks

    CLI Eficient

    http://find/http://goback/
  • 8/8/2019 ROSEdu Tech Talks Prezentarea 11: Utilizarea Eficient a Liniei de Comand

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    Linia de comanda CLI vs. GUI Facilitat,i shell Facilitat,i libreadline Extra juice Concluzii Intrebari

    Moto

    It was a mistake to think that GUIs ever would, could, or even

    should, eliminate CLIs.

    Jeffrey Snover (Architect of Windows PowerShell)

    Razvan Deaconescu ROSEdu Tech Talks

    CLI Eficient

    http://find/http://goback/
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    Linia de comanda CLI vs. GUI Facilitat,i shell Facilitat,i libreadline Extra juice Concluzii Intrebari

    Despre aceasta prezentare

    Daca nt, eleget, i0% punet, i ntrebari5% e bine25% e excelent50% e ceva suspect la mijloc

    75% suntem n alta dimensiuneScopul: uite ce se poate face!

    React, ii as, teptateHuh?Ive a feeling were not in Kansas any more.

    Howd he do that?Cand o sa fiu mare . . .Arunc mouse-ul!Bine ca mai s, tiu nis, te matematica. Daca nu merge cucalculatoarele astea . . .

    Razvan Deaconescu ROSEdu Tech Talks

    CLI Eficient

    http://find/http://goback/
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    Linia de comanda CLI vs. GUI Facilitat,i shell Facilitat,i libreadline Extra juice Concluzii Intrebari

    Cuprins

    1 Linia de comanda

    2 CLI vs. GUI

    3 Facilitat, i shell

    4 Facilitat, i libreadline

    5 Extra juice

    6 Concluzii

    7 Intrebari

    Razvan Deaconescu ROSEdu Tech Talks

    CLI Eficient

    L d d CLI GUI l h ll l l b dl C l I b

    http://find/http://goback/
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    Linia de comanda CLI vs. GUI Facilitat,i shell Facilitat,i libreadline Extra juice Concluzii Intrebari

    Ce este linia de comanda?

    interfat, a simpla, bazata pe text, de interact, iune cu o aplicat, ie

    prompt text care defines, te zona n care se introduce text

    comanda zona de text editabila de utilizator care poateconduce la rularea unei funct, ionalitat, i

    rularea unei comenzi se apasa, de obicei, ENTER s, i seexecuta comanda n cauza

    argumente opt, iuni ale unei comenzi pentru a defini facilitat, i

    suplimentareCLI comand line interface

    Razvan Deaconescu ROSEdu Tech Talks

    CLI Eficient

    Li i d d CLI GUI F ili i h ll F ili i lib dli E j i C l ii I b i

    http://find/http://goback/
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    Linia de comanda CLI vs. GUI Facilitat,i shell Facilitat,i libreadline Extra juice Concluzii Intrebari

    Exemple de CLI

    shell + terminal Unix

    Command Prompt / Power Shell

    echipamente de ret, ea

    configurarea jocurilor (n special FPS-uri)

    IRC (/away, /msg, /help)

    MATLAB

    AutoCAD

    client, i de aplicat, ii de baze de date

    Python

    Razvan Deaconescu ROSEdu Tech Talks

    CLI Eficient

    Li i de d CLI s GUI F ilit ti shell F ilit ti lib e dli e E t j i e C l ii I t eb i

    http://find/http://goback/
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    Linia de comanda CLI vs. GUI Facilitat,i shell Facilitat,i libreadline Extra juice Concluzii Intrebari

    CLI, shell, terminal

    CLItip de interfat, aspecific mai multor aplicat, ii

    shell

    aplicat, ie care furnizeaza interfat, a de acces la serviciilesistemului de operareshell pentru alte aplicat, iiCLI sau GUIpentru CLI interpretor de comenzi

    terminal

    dispozitiv hardware pentru input/outputsystem consolevirtual terminal (ALT+CTRL+F[1-6])terminal emulator (gnome-terminal, konsole, PuTTY)

    Razvan Deaconescu ROSEdu Tech Talks

    CLI Eficient

    Linia de comanda CLI vs GUI Facilitati shell Facilitati libreadline Extra juice Concluzii Intrebari

    http://find/http://goback/
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    Linia de comanda CLI vs. GUI Facilitat,i shell Facilitat,i libreadline Extra juice Concluzii Intrebari

    Exemplu n Linux

    razvan@valhalla:$ ls -l -h /tmp

    razvan@valhalla:$ prompt-ul

    ls comanda

    -l -h /tmp argumentele comenzii

    Razvan Deaconescu ROSEdu Tech Talks

    CLI Eficient

    Linia de comanda CLI vs GUI Facilitati shell Facilitati libreadline Extra juice Concluzii Intrebari

    http://find/http://goback/
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    Linia de comanda CLI vs. GUI Facilitat,i shell Facilitat,i libreadline Extra juice Concluzii Intrebari

    Cuprins

    1 Linia de comanda

    2 CLI vs. GUI

    3 Facilitat, i shell4 Facilitat, i libreadline

    5 Extra juice

    6 Concluzii

    7 Intrebari

    Razvan Deaconescu ROSEdu Tech Talks

    CLI Eficient

    Linia de comanda CLI vs GUI Facilitati shell Facilitati libreadline Extra juice Concluzii Intrebari

    http://find/http://goback/
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    Linia de comanda CLI vs. GUI Facilitat,i shell Facilitat,i libreadline Extra juice Concluzii Intrebari

    GUI

    WIMP Window, Image, Menu, Pointing Device

    eye candy

    personalizabila

    mouse

    Razvan Deaconescu ROSEdu Tech Talks

    CLI Eficient

    Linia de comanda CLI vs. GUI Facilitati shell Facilitati libreadline Extra juice Concluzii Intrebari

    http://find/http://goback/
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    Linia de comanda CLI vs. GUI Facilitat,i shell Facilitat,i libreadline Extra juice Concluzii Intrebari

    CLI vs. GUI

    us, urint, a n utilizare

    control

    multitaskingviteza

    resurse consumate

    automatizare

    acces la distant, a

    us, urint, a n utilizare

    control

    multitasking

    viteza

    resurse consumate

    automatizare

    acces la distant, a

    Razvan Deaconescu ROSEdu Tech Talks

    CLI Eficient

    Linia de comanda CLI vs. GUI Facilitat,i shell Facilitat,i libreadline Extra juice Concluzii Intrebari

    http://find/http://goback/
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    , , j

    De ce CLI?

    eficient, a

    mbunatat, ire continua

    interfat, a unicaflexibilitate

    Feel da powa!

    exemple

    parcurgerea directoarelormutarea fis, ierelor

    Razvan Deaconescu ROSEdu Tech Talks

    CLI Eficient

    Linia de comanda CLI vs. GUI Facilitat,i shell Facilitat,i libreadline Extra juice Concluzii Intrebari

    http://find/http://goback/
  • 8/8/2019 ROSEdu Tech Talks Prezentarea 11: Utilizarea Eficient a Liniei de Comand

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    , ,

    De ce GUI?

    grandma-friendly

    lucrul cu sistemul de fis, iereredenumirea unor fis, iereselectarea a N fis, iere

    trecere prin mai multe directoare

    Razvan Deaconescu ROSEdu Tech Talks

    CLI Eficient

    Linia de comanda CLI vs. GUI Facilitat,i shell Facilitat,i libreadline Extra juice Concluzii Intrebari

    http://find/http://goback/
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    Cuprins

    1 Linia de comanda

    2 CLI vs. GUI

    3 Facilitat, i shell

    4 Facilitat, i libreadline

    5 Extra juice

    6 Concluzii

    7 Intrebari

    Razvan Deaconescu ROSEdu Tech Talks

    CLI Eficient

    Linia de comanda CLI vs. GUI Facilitat,i shell Facilitat,i libreadline Extra juice Concluzii Intrebari

    http://find/http://goback/
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    Autocompletion

    bash-completion

    TAB

    completarea unei comenzicompletarea opt, iunilor

    TAB TAB

    furnizarea tuturor solut, iilor posibile

    Razvan Deaconescu ROSEdu Tech Talks

    CLI Eficient

    Linia de comanda CLI vs. GUI Facilitat,i shell Facilitat,i libreadline Extra juice Concluzii Intrebari

    http://find/http://goback/
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    Istoricul comenzilor

    tasta sus, tasta jos

    !! rularea comenzii anterioare

    $ sau ALT+. ultimul argument al ultimei comenzi

    CTRL+R reverse search

    Razvan Deaconescu ROSEdu Tech Talks

    CLI Eficient

    Linia de comanda CLI vs. GUI Facilitat,i shell Facilitat,i libreadline Extra juice Concluzii Intrebari

    http://find/http://goback/
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    cd

    fara argumente schimbarea directorului radacina

    cd $ , cd ALT+. (util dupa mkdir)

    cd - directorul anterior

    Razvan Deaconescu ROSEdu Tech Talks

    CLI Eficient

    Linia de comanda CLI vs. GUI Facilitat,i shell Facilitat,i libreadline Extra juice Concluzii Intrebari

    http://find/http://goback/
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    Comment out

    folosirea # n fat, a unei comenzi o comenteazaputet, i reveni ulterior n istoric

    Razvan Deaconescu ROSEdu Tech Talks

    CLI Eficient

    Linia de comanda CLI vs. GUI Facilitat,i shell Facilitat,i libreadline Extra juice Concluzii Intrebari

    http://find/http://goback/
  • 8/8/2019 ROSEdu Tech Talks Prezentarea 11: Utilizarea Eficient a Liniei de Comand

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    Shell expansion

    expandare la home folder

    username expandare la home folder-ul utilizatoruluiusername

    variabile shell

    Razvan Deaconescu ROSEdu Tech Talks

    CLI Eficient

    Linia de comanda CLI vs. GUI Facilitat,i shell Facilitat,i libreadline Extra juice Concluzii Intrebari

    http://find/http://goback/
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    Globbing

    * orice caracter de oricate ori

    {a,b,c} select, ie ntre opt, iuni[a-g] clasa de caractere

    ? orice o singura data

    Razvan Deaconescu ROSEdu Tech TalksCLI Eficient

    Linia de comanda CLI vs. GUI Facilitat,i shell Facilitat,i libreadline Extra juice Concluzii Intrebari

    http://find/http://goback/
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    CDPATH

    controleaza directoarele catre care se poate folosi cd s, i calerelativa

    CDPATH=. cd doar catre directoarele vizibile din directorulcurent

    CDPATH=.:/home/razvan/projects n plus, directoarelevizibile din projects

    Razvan Deaconescu ROSEdu Tech TalksCLI Eficient

    Linia de comanda CLI vs. GUI Facilitat,i shell Facilitat,i libreadline Extra juice Concluzii Intrebari

    http://find/http://goback/
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    Redirectarea comenzilor

    command > file redirectarea ies, irii standard

    command file redirectarea ies, irii de eroare standard

    cat /dev/null > file trunchierea fis, ierului

    > file trunchierea fis, ierului

    Razvan Deaconescu ROSEdu Tech TalksCLI Eficient

    Linia de comanda CLI vs. GUI Facilitat,i shell Facilitat,i libreadline Extra juice Concluzii Intrebari

    http://find/http://goback/
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    Inlant, uirea comenzilor

    command1 | command2 ies, irea comenzii command1 esteintrare pentru command2

    filozofia Unix: Do one thing, do one thing well!

    Razvan Deaconescu ROSEdu Tech TalksCLI Eficient

    Linia de comanda CLI vs. GUI Facilitat,i shell Facilitat,i libreadline Extra juice Concluzii Intrebari

    http://find/http://goback/
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    Shell scripting

    variabile

    filtre de textcicluri, instruct, iuni de decizie

    automatizare

    Razvan Deaconescu ROSEdu Tech TalksCLI Eficient

    Linia de comanda CLI vs. GUI Facilitat,i shell Facilitat,i libreadline Extra juice Concluzii Intrebari

    http://find/http://goback/
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    Cuprins

    1 Linia de comanda

    2 CLI vs. GUI

    3 Facilitat, i shell

    4 Facilitat, i libreadline

    5 Extra juice

    6 Concluzii

    7 Intrebari

    Razvan Deaconescu ROSEdu Tech TalksCLI Eficient

    Linia de comanda CLI vs. GUI Facilitat,i shell Facilitat,i libreadline Extra juice Concluzii Intrebari

    http://find/http://goback/
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    libreadline

    biblioteca folosita pentru editarea comenzilorfolosita de multe aplicat, ii CLI

    Razvan Deaconescu ROSEdu Tech TalksCLI Eficient

    Linia de comanda CLI vs. GUI Facilitat,i shell Facilitat,i libreadline Extra juice Concluzii Intrebari

    http://find/http://goback/
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    Generalitat, i

    CTRL+D logout

    CTRL+C anularea comenzii (foarte important)

    CTRL+L clear screen

    Razvan Deaconescu ROSEdu Tech TalksCLI Eficient

    Linia de comanda CLI vs. GUI Facilitat,i shell Facilitat,i libreadline Extra juice Concluzii Intrebari

    http://find/http://goback/
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    Mis, cari

    Emacs bindings

    CTRL+F caracter nainte

    CTRL+B caracter napoi

    ALT+F cuvant nainte

    ALT+B cuvant napoi

    CTRL+A nceput de rand

    CTRL+E sfars, it de rand

    CTRL+]+caracter cautarea primei aparit, iei a caracterului

    Razvan Deaconescu ROSEdu Tech TalksCLI Eficient

    Linia de comanda CLI vs. GUI Facilitat,i shell Facilitat,i libreadline Extra juice Concluzii Intrebari

    http://find/http://goback/
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    Editare

    CTRL+D s, terge caracterul curent (Delete)

    Backspace s, terge caracterul anterior

    ALT+D s, terge cuvantul curentALT+Backspace s, terge cuvantul anterior

    CTRL+K s, terge din pozit, ia curenta pana la sfars, it

    CTRL+U s, terge din pozit, ia curenta pana la nceput

    CTRL+ undo

    Razvan Deaconescu ROSEdu Tech TalksCLI Eficient

    Linia de comanda CLI vs. GUI Facilitat,i shell Facilitat,i libreadline Extra juice Concluzii Intrebari

    http://find/http://goback/
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    inputrc

    fis, ierul de configurare pentru libreadline

    something cute ALT+#set completion-ignore-case on

    mai multe n documentat, ie ( man bash)

    Razvan Deaconescu ROSEdu Tech TalksCLI Eficient

    Linia de comanda CLI vs. GUI Facilitat,i shell Facilitat,i libreadline Extra juice Concluzii Intrebari

    http://find/http://goback/
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    Cuprins

    1 Linia de comanda

    2 CLI vs. GUI

    3 Facilitat, i shell

    4 Facilitat, i libreadline

    5 Extra juice

    6 Concluzii

    7 Intrebari

    Razvan Deaconescu ROSEdu Tech TalksCLI Eficient

    Linia de comanda CLI vs. GUI Facilitat,i shell Facilitat,i libreadline Extra juice Concluzii Intrebari

    http://find/http://goback/
  • 8/8/2019 ROSEdu Tech Talks Prezentarea 11: Utilizarea Eficient a Liniei de Comand

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    Acces rapid la shell

    keyboard shortcut pentru terminal acces rapid

    nautilus-open-terminalpachet GNOMEdeschide un terminal n directorul din interfat, a grafica

    Razvan Deaconescu ROSEdu Tech TalksCLI Eficient

    Linia de comanda CLI vs. GUI Facilitat,i shell Facilitat,i libreadline Extra juice Concluzii Intrebari

    http://find/http://goback/
  • 8/8/2019 ROSEdu Tech Talks Prezentarea 11: Utilizarea Eficient a Liniei de Comand

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    Rulare rapida de aplicat, ii

    gnome-open

    pachet GNOMEdeschide fis, ierul transmis ca argument cu aplicat, ia dorita

    un fel de CLI double clickalias-uri

    pentru comenzi comune/freventealias go=gnome-open

    alias sshsr=ssh -l root swarm.cs.pub.ro

    alias grep=grep --color=auto

    Razvan Deaconescu ROSEdu Tech TalksCLI Eficient

    Linia de comanda CLI vs. GUI Facilitat,i shell Facilitat,i libreadline Extra juice Concluzii Intrebari

    http://find/http://goback/
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    Scurtaturi n mediul grafic

    ALT+F2 rulare comanda

    ALT+F4 nchidere fereastra

    ALT+F5 minimizare

    ALT+F10 maximizare

    ALT+F8 redimensionare

    ALT+F7 mutare

    Razvan Deaconescu ROSEdu Tech TalksCLI Eficient

    Linia de comanda CLI vs. GUI Facilitat,i shell Facilitat,i libreadline Extra juice Concluzii Intrebari

    http://find/http://goback/
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    Cuprins

    1 Linia de comanda

    2 CLI vs. GUI

    3 Facilitat, i shell

    4 Facilitat, i libreadline

    5 Extra juice

    6 Concluzii

    7 Intrebari

    Razvan Deaconescu ROSEdu Tech TalksCLI Eficient

    Linia de comanda CLI vs. GUI Facilitat,i shell Facilitat,i libreadline Extra juice Concluzii Intrebari

    http://find/http://goback/
  • 8/8/2019 ROSEdu Tech Talks Prezentarea 11: Utilizarea Eficient a Liniei de Comand

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    Cuvinte cheie

    CLI

    shell

    terminal

    prompt

    comanda

    argumente

    GUI

    CLIautocompletion

    TAB, TAB-TAB

    history

    reverse search

    globbing

    scriptinglibreadline

    editarea comenzilor

    inputrc

    nautilus-open-terminalgnome-open

    alias-uri

    Razvan Deaconescu ROSEdu Tech TalksCLI Eficient

    Linia de comanda CLI vs. GUI Facilitat,i shell Facilitat,i libreadline Extra juice Concluzii Intrebari

    http://find/http://goback/
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    Resurse utile

    http://en.wikipedia.org/wiki/Command-line_interface

    http://www.gnu.org/software/bash/manual/bashref.html#

    Command-Line-Editing

    http://www.gnu.org/software/bash/manual/bashref.html#Using-History-Interactively

    http://www.computerhope.com/issues/ch000619.htm

    command line interface advantages pe Google

    Andrew Hunt and David Thomas The PragmaticProgrammer (Chapter 3. Basic Tools)

    Razvan Deaconescu ROSEdu Tech TalksCLI Eficient

    Linia de comanda CLI vs. GUI Facilitat,i shell Facilitat,i libreadline Extra juice Concluzii Intrebari

    http://en.wikipedia.org/wiki/Command-line_interfacehttp://www.gnu.org/software/bash/manual/bashref.html#Command-Line-Editinghttp://www.gnu.org/software/bash/manual/bashref.html#Command-Line-Editinghttp://www.gnu.org/software/bash/manual/bashref.html#Using-History-Interactivelyhttp://www.gnu.org/software/bash/manual/bashref.html#Using-History-Interactivelyhttp://www.computerhope.com/issues/ch000619.htmhttp://www.computerhope.com/issues/ch000619.htmhttp://www.gnu.org/software/bash/manual/bashref.html#Using-History-Interactivelyhttp://www.gnu.org/software/bash/manual/bashref.html#Using-History-Interactivelyhttp://www.gnu.org/software/bash/manual/bashref.html#Command-Line-Editinghttp://www.gnu.org/software/bash/manual/bashref.html#Command-Line-Editinghttp://en.wikipedia.org/wiki/Command-line_interfacehttp://find/http://goback/
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    Cuprins

    1 Linia de comanda

    2 CLI vs. GUI

    3 Facilitat, i shell

    4 Facilitat, i libreadline

    5 Extra juice

    6 Concluzii

    7 Intrebari

    Razvan Deaconescu ROSEdu Tech Talks

    CLI Eficient

    http://find/http://goback/