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    Lab 2 OS Commands in Linux

    Uploaded by

    Laiba Babar
    This document provides examples and explanations of common Linux commands including cat, pwd, ls, mv, rm, cp, mkdir, cd, and clear. It describes what each command is used for and provides simple examples of common usages. The document is authored by Laiba Babar for their Operating Systems course and lab assignment.

    Copyright:

    © All Rights Reserved
    Download as DOCX, PDF, TXT or read online from Scribd

    Lab 2 OS Commands in Linux

    Uploaded by

    Laiba Babar
    43 views13 pages
    This document provides examples and explanations of common Linux commands including cat, pwd, ls, mv, rm, cp, mkdir, cd, and clear. It describes what each command is used for and provides simple examples of common usages. The document is authored by Laiba Babar for their Operating Systems course and lab assignment.

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    This document provides examples and explanations of common Linux commands including cat, pwd, ls, mv, rm, cp, mkdir, cd, and clear. It describes what each command is used for and provides simple examples of common usages. The document is authored by Laiba Babar for their Operating Systems course and lab assignment.

    Copyright:

    © All Rights Reserved
    Download as DOCX, PDF, TXT or read online from Scribd
    Download as docx, pdf, or txt
    43 views13 pages

    Lab 2 OS Commands in Linux

    Uploaded by

    Laiba Babar
    This document provides examples and explanations of common Linux commands including cat, pwd, ls, mv, rm, cp, mkdir, cd, and clear. It describes what each command is used for and provides simple examples of common usages. The document is authored by Laiba Babar for their Operating Systems course and lab assignment.

    Copyright:

    © All Rights Reserved
    Download as DOCX, PDF, TXT or read online from Scribd
    Download as docx, pdf, or txt
    of 13

    1

    NAME: LAIBA BABAR


    ROLL NO: 2021-BCS-019
    COURSE: OPERATING SYSTEM
    INSTRUCTOR: SIR ADEEL KHALID

    LAB#2
    Command: cat
    “cat” is short for concatenate. This command is used to create, view and concatenate files.
    Example:
    o cat file1 file2 > file3
    This command combines the contents of the first two files into the third file.

    OPERATING SYSTEM laiba qureshi


    2

    Command: pwd
    “pwd” stands for print working directory. It displays your current position in the
    UNIX/LINUX file system.
    Example:
    o pwd It is simply used to report your current working directory.

    Command: ls
    “ls” stands for list. It is used to list information about files and directories.
    Example:
    It provides a very basic listing of the files in your current working directory. Filenames
    beginning with a decimal are considered hidden files, and they are not shown.

    o ls -al
    This command provides a long listing of information about all files in the current directory.

    OPERATING SYSTEM laiba qureshi


    3

    This is probably the most used version of the ls command.

    Command: mv
    The “mv” command is used to move and rename files.
    Examples:
    o mv Lab OS Lab
    This command renames the file “Lab” to the new name “ OSLab”

    OPERATING SYSTEM laiba qureshi


    4

    o mv OSLab garbage
    This command renames the file “OSLAB1” to the new name “garbage”.

    Command: rm
    The “rm” command is used to remove files and directories.
    Examples:
    o rm OSLab
    This command deletes the file named “OSLab”(assuming you have permission to delete this
    file).

    OPERATING SYSTEM laiba qureshi


    5

    o rm OSLab1 OSLab2
    This command deletes the files named “Chapter1”, “Chapter2”and “Chapter3”.

    OPERATING SYSTEM laiba qureshi


    6

    AFTER COMMAND:

    o rm -i OSLab1 OSLab2
    This command prompt you before deleting any of the three files specified. The -i option stands
    for inquire.
    You must answer y (for yes) for each file you really want to delete. This can be a safer way to
    delete files.

    o rm in*

    OPERATING SYSTEM laiba qureshi


    7

    This command deletes all files in the current directory whose filename begins with the
    characters “in”

    o rm *.txt
    This command deletes all files in the current directory whose filename ends with the
    characters “txt”

    OPERATING SYSTEM laiba qureshi


    8

    o rm -r Labs This command deletes the directory named “Labs”. This directory, and all of
    erased from the disk, including any sub-directories and files.

    Command: cp
    The “cp” command is used to copy files and directories. When using the cp command, you
    must always specify both the source and destination of the file(s) to be copied.
    Examples: o cp /home/Lab1 /home/OSLabs
    This command copies the “Lab1” file in “/home” to the directory named “/home/OSLab”

    OPERATING SYSTEM laiba qureshi


    9

    Command: mkdir
    The “mkdir” command is used to create new directories (sub-directories).
    Examples:
    o mkdir Lab
    This command creates a new directory named “Lab” in your current directory. (This example
    assumes that you have the proper permissions to create a new sub-directory in your current
    working directory.)

    o mkdir memos letters


    This command creates two new sub-directories (memos, letters) in the current directory.

    OPERATING SYSTEM laiba qureshi


    10

    o mkdir /home/labb
    This command creates a new directory named “lab” in the directory “/home”

    o rm -r labb

    OPERATING SYSTEM laiba qureshi


    11

    This command deletes the directory named “labb” This directory, and all of its' contents,
    are erased from the disk, including any sub-directories and files.

    Command: cd, chdir


    “cd” stands for change directory. It is the primary command for moving around the file
    system.
    Examples:
    o cd /home
    This command moves you to the “/home” directory. “/home” becomes your current working
    directory.

    o cd /h*
    Moves you to the “/home” directory - if this is the only directory matching this wildcard
    pattern.

    OPERATING SYSTEM laiba qureshi


    12

    o cd
    Issuing the “cd” command without any arguments moves you to your home directory.

    Command: clear
    “Clear” is used to clear the full screen of text, perhaps garbage on the terminal.
    Examples:
    o clear
    This command clears all text on the terminal.

    OPERATING SYSTEM laiba qureshi


    13

    OPERATING SYSTEM laiba qureshi

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