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Linux command line tutorial by ProgrammingKnowledge

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0h07m

Linux Command Line Tutorial For Beginners 1 - Introduction

Find More On My Website - http://www.codebind.com/

Linux is a computer operating system free for development and distribution, both commercially and non-commercially. There are times when you may spend hours doing a repetitive task. A person who knows command line can write a script in 10 minutes and if he has to repeat it, can do it in a second. So what is Command Line and why is it so popular? Command line applications provide us with numerous benefits which cannot be achieved with any of the available GUI applications. One can create scripts to automate work, and can go so much deeper into the system and explore things that would generally be not possible with GUI.
Linux bash shell programming tutorials. Learn the Linux/ Unix command line (Bash) with beginners tutorial. Clear descriptions, command outlines, examples, shortcuts and best practice.Learn the Command Line.Linux Terminal Tutorial.Linux Command Line Basics.Searches related to linux command line tutorial for beginners.li

0h17m

Linux Command Line Tutorial For Beginners 2 - ls command in Linux

Find More On My Website - http://www.codebind.com/linux-tutorials/linux-man-page-ls-command/

ls command Lists the files in the current directory, in alphanumeric order, except files starting with the “.” character. ls lists information about the FILEs (the current directory by default). Sort entries alphabetically if none of -cftuvSUX nor --sort is specified.
Linux and UNIX ls command help and examples ls command in linux. ls - Unix, Linux Command. ls - Linux Command - Unix Command Linux man page - ls command. cd command in linux. cat command in linux. grep command in linux. pwd command in linux. mkdir command in linux. cp command in linux. ls command in linux. ln command in linux

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Linux Command Line Tutorial

0h11m

Linux Command Line Tutorial For Beginners 3 - cd command in Linux

Find More On My Website - http://www.codebind.com/linux-tutorials/cd-command-linux/

cd commanf is used to Change the shell working directory. Navigating from one directory to another is done with the command cd taken over the directory name. Change the current directory. With no arguments “cd” changes to the users home directory. How to use the cd command, by The Linux . cd command in Linux/Unix | change directory. Linux and UNIX cd command help and examples. cp command in linux. mkdir command in linux. cat command in linux. rmdir command in linux. pwd command in linux. grep command in linux. clear command in linux. cd options linux

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0h09m

Linux Command Line Tutorial For Beginners 4 - cat command in Linux

Linux man page – cat command :
http://www.codebind.com/linux-tutorials/linux-man-page-cat-command/

cat command is used to show the content of a files and also to combine several files together in one file. The cat command does not accept directories as input. cat (Unix) . The cat Command. How To: Use cat Command In Linux / UNIX. Linux and UNIX cat command help and examples. cat - Unix, Linux Command . Searches related to cat command. cat command windows. cat command examples. cp command, ls command. cat command in Linux with examples. cat command terminal. cat command in UNIX. bash cat command.

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0h08m

Linux Command Line Tutorial For Beginners 5 - I/O Redirection

In this video I will show how I/o redirection wok in Linux using Linux Command Line (Terminal). I will show I/O Redirection works in Linux, Redirect all output to file, Illustrated Redirection Tutorial
Linux redirect stderr and stdout to file, Linux redirect stderr to stdout
Linux iptables redirect, Linux nginx redirect, Linux redirect stderr to file, Linux redirect stdin, Linux redirect stdin to file, Linux stdout

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0h06m

Linux Command Line Tutorial For Beginners 6 - mkdir Command

Linux – The mkdir Command - http://www.codebind.com/linux-tutorials/linux-and-unix-mkdir-command/

mkdir Creates directories with the given names. mkdir creates the DIRECTORY(ies), if they do not already exist. Linux and Unix mkdir command help and examples. UNIX Basic commands: mkdir. Examples of the Unix mkdir command, mkdir command windows. mkdir command in linux, mkdir command ubuntu. mkdir command in unix, mkdir command mac. mkdir command permission denied
bash mkdir command. mkdir command tutorial.

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0h12m

Linux Command Line Tutorial For Beginners 7 - rm and rmdir commands for linux

rmdir command Reference - http://www.codebind.com/linux-tutorials/linux-rmdir-command/

rm command . rm command in linux with examples. rm command mac. rm command examples. rm command linux. ubuntu rm command. sudo rm command. use of rm command in linux
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0h11m

Linux Command Line Tutorial For Beginners 8 - cp command

In this lesson we will learn how to use cp command in linux / unix. cp is a Linux shell command to copy files and directories. cp - copy files and directories. Copy SOURCE to DEST, or multiple SOURCE(s) to DIRECTORY.

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0h11m

Linux Command Line Tutorial For Beginners 9 - mv command

More on Linux - http://www.codebind.com/category/linux-tutorials/

In this lesson we will learn how to use mv command in linux / unix. mv command is used to move files and directories. mv can also be used to rename a file. So in other words mv command Moves or renames files/directories. Linux and Unix mv command help and examples.

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0h07m

Linux Command Line Tutorial For Beginners 10 - less command

in thhis video we will learn how to use less command in linux
less = shows the content of a file

Less command can be used as Pagers to display contents of large files page by page or scroll line by line up and down.
Less have a lot of viewing options and search capability.
Interactive. To exit: ‘q’
less (“less is more”) a bit more smart than the more command
to display contents of a file:
% less filename

To display line numbers:
% less -N filename

To display a prompt:
% less -P"Press 'q' to quit" filename

Combine the two:
% less -NP"Blah-blah-blah" filename

For more information:
% man less

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0h05m

Linux Command Line Tutorial For Beginners 11 - touch command

In this video we will learn how to use touch command in linux.
This command is used to create file that file is by default txt.Eg:-touch filename.
By touching a file you either create it if it did not exists (with 0 length).
Or you update it’s last modification and access times.
There are options to override the default behavior.
% touch file
% man touch

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0h06m

Linux Command Line Tutorial For Beginners 12 - nano command

One of the simplest editors installed in most systems is "nano" in Linux and “pico” in UNIX. Start “nano” by typing its name at the command prompt. If you type “nano filename”, where “filename” is the name of an existing file, nano will open the file for editing.

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0h08m

Linux Command Line Tutorial For Beginners 13 - sudo command

in this video we will learn how to use sudo command in linux.
The sudo facility allows specified users to run specific commands as root without having to know the root password.
sudo uses the configuration file /etc/sudoers

Processes and Files
UNIX is built upon processes and files. A process is basically an executing program. All the work performed by a UNIX system is carried out by processes.
All the long term information stored on a UNIX system is stored in files. Every file on a UNIX system has a number of attributes that serve different purposes.
There are a collection of commands that allow users and SA’s to to manipulate files and processes.

Process
Whenever you run a program, a process is created. The UNIX command line that you use to enter the commands is actually another program/command called the shell.
To execute a command, that command has to be in one of the directories in your search path.

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0h08m

Linux Command Line Tutorial For Beginners 14 - top command

In this video we will learn how to use top command in Linux. top command in Linux is used To view the CPU usage of all processes. So this will hep to get some Information and help with the Linux and Unix top command including examples.
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0h08m

Linux Command Line Tutorial For Beginners 15 - kill command

kill: You can terminate process with kill command. The command usesone or more PID’s as its argument.
$ kill 122 129 115

ps: This command will displayed the process status .submmission time,required CPU time, Process name.

$ ps [option]
-a: Print all terminal process.
-e: Print all current process.
-t: Print all processes of listed terminal.
-u: Displays processes of listed user.

sleep: This command will suspend the execution of shell.The maximum limit of sleep is 18000 second.Unfortunately keep the terminal idle.
$ sleep [seconds]
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0h07m

Linux Command Line Tutorial For Beginners 16 - echo command

echo [options] [string, variables...]
Displays text or variables value on screen.
Options
-n Do not output the trailing new line.
-e Enable interpretation of the following backslash escaped characters in the strings:
\a alert (bell)
\b backspace
\c suppress trailing new line
\n new line
\r carriage return
\t horizontal tab
\\ backslash
For eg. $ echo -e "An apple a day keeps away \a\t\tdoctor\n"
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0h12m

Linux Command Line Tutorial For Beginners 17 - file permissions, symbolic permissions and chmod

I this video web will learn about file permissions in Linux. We will talk about how chmod command can be used to change the file permissions .
File security and Permissions
A file is owned by the user who created it
That user can then specify who can read, write and execute that file
A file when created can be accessed in three ways:Reading, Writing, Executing

Permissions of a file are grouped into three different types:
Owner
Group
Other

The general format of the chmod command is
$chmod [who] operator [permission] filename
Who means :
u the user permission
g the group permission
o the other permission
a means all (user, group and other)
Operator means:
add a permission
- take away a permission
= set permission
Permission means:
R read permission
W write permission
X execute permission
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0h07m

Linux Command Line Tutorial For Beginners 18 - directory permissions and chmod

I this video web will learn about directory permissions in Linux. We will talk about how chmod command can be used to change the directory permissions .
1. Read
Grants the capability to read ie. view the contents of the file.

2. Write
Grants the capability to modify, or remove the content of the file.

3. Execute
User with execute permissions can run a file as a program.
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0h09m

Linux Command Line Tutorial For Beginners 19 - Octal and Numerical permissions (chmod)

The chmod numerical format accepts up to four octal digits. The three rightmost digits refer to permissions for the file owner, the group, and other users. The optional leading digit (when 4 digits are given) specifies the special setuid, setgid, and sticky flags.

# Permission rwx
7 read, write and execute rwx
6 read and write rw-
5 read and execute r-x
4 read only r--
3 write and execute -wx
2 write only -w-
1 execute only --x
0 none ---
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0h09m

Linux Command Line Tutorial For Beginners 20 - Introduction to Bash Scripting

INTRODUCTION TO SHELL PROGRAMMING
. Shell programming is one of the most powerful features on any UNIX system
. If you cannot find an existing utility to accomplish a task, you can build one using a shell script

SHELL PROGRAM STRUCTURE

A shell program contains high-level programming language features:
. Variables for storing data
. Decision-making control (e.g. if and case statements)
. Looping abilities (e.g. for and while loops)
. Function calls for modularity
. A shell program can also contain:
. UNIX commands
. Pattern editing utilities (e.g. grep, sed, awk)
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