Diving Into Bash - Revision history

Jonathan46000 at 22:51, 16 March 2016

2016-03-16T22:51:36Z

← Older revision		Revision as of 18:51, 16 March 2016
Line 164:		Line 164:
	while not logged in as root. (You still must have the root password).		while not logged in as root. (You still must have the root password).

	$sudo [command] [arguments]		$sudo [command] [-options] [arguments]

			== Package Manager ==

			One of those situations where you will often use sudo is installing new applications with a package manager. In Debian the package
			manager is apt. We will install an application using the apt-get and sudo commands.

			$sudo apt-get install htop

			The command prompt should prompt you for the root password and give you the option of whether to install the package or not. Install the package and then
			run it by typing:

			$htop

			If you have any further questions please reference the slide show linked at the bottom of this page.


	~~rmdir ~/myNewDirectory~~

	== External Links ==		== External Links ==
	# [https://www.linux.com/learn/tutorials/272346-bash-101-working-at-the-cli ''Bash 101: Working at the CLI'']		# [https://www.linux.com/learn/tutorials/272346-bash-101-working-at-the-cli ''Bash 101: Working at the CLI'']

2016-03-16T22:48:13Z

← Older revision		Revision as of 18:48, 16 March 2016
Line 159:		Line 159:
	We are not going to get to get much into bash scripting here but this is a small example of what is possible from the command line in Linux		We are not going to get to get much into bash scripting here but this is a small example of what is possible from the command line in Linux

			== Sudo ==

			Often you need root permissions to make a change or execute certain applications on your system. Sudo allows you to temporarily elevate your privelages
			while not logged in as root. (You still must have the root password).

			$sudo [command] [arguments]

2016-03-16T22:45:53Z

← Older revision		Revision as of 18:45, 16 March 2016
Line 163:		Line 163:


	~~+This is where we should probably talk about text editors.~~

	~~+This is where bash script should go~~

2016-03-16T22:40:07Z

Creating a File

← Older revision		Revision as of 18:40, 16 March 2016
Line 101:		Line 101:
	Excellent! We should now have text content in our newFile.		Excellent! We should now have text content in our newFile.

			== Text Editor ==
	In this step by step we will be introducing you to the command line text editor vim, however there are several other good options such as emacs and nano		In this step by step we will be introducing you to the command line text editor vim, however there are several other good options such as emacs and nano

2016-03-16T22:38:57Z

← Older revision		Revision as of 18:38, 16 March 2016
Line 122:		Line 122:

	(esc key) leave insert mode		(esc key) leave insert mode

			Press the "A" key to get into insert mode and type the following into your text file:

			#!/bin/bash

			PS3='Choose one word: '

			#bash select
			select word in "linux" "bash" "scripting" "tutorial"
			do
			echo "The word you have selected is: $word"
			#Break, otherwise endless loop
			break
			done

			exit 0

			Now press the "esc" key and then type ":wq" and press "Enter". You should be back at the bash command prompt.

			You have just created you first bash script. Now lets change our file permissions and run it.

			$chmod 750 myscript

			$./myscript

			This should be your output

			1) linux
			2) bash
			3) scripting
			4) tutorial
			Choose one word: 4
			The word you have selected is: tutorial

			We are not going to get to get much into bash scripting here but this is a small example of what is possible from the command line in Linux





	+This is where we should probably talk about text editors.		+This is where we should probably talk about text editors.

2016-03-16T22:31:27Z

← Older revision		Revision as of 18:31, 16 March 2016
Line 108:		Line 108:

	a - insert text behind the cursor i - insert text ahead of the cursor		a - insert text behind the cursor i - insert text ahead of the cursor

	k - move up j - move down l - move right h - move left		k - move up j - move down l - move right h - move left

	n dd - remove “n” of lines from cursor n dw - remove “n” of words from cursor		n dd - remove “n” of lines from cursor n dw - remove “n” of words from cursor

	:q! - quit without making changes :wq - write quit		:q! - quit without making changes :wq - write quit

	x - delete character at cursor n p - paste “n” of times		x - delete character at cursor n p - paste “n” of times

	o - insert blank line under cursor yy - copy		o - insert blank line under cursor yy - copy

	:w - write file :n - move to line “n”		:w - write file :n - move to line “n”

	(esc key) leave insert mode		(esc key) leave insert mode

2016-03-16T22:29:00Z

← Older revision		Revision as of 18:29, 16 March 2016
Line 101:		Line 101:
	Excellent! We should now have text content in our newFile.		Excellent! We should now have text content in our newFile.

			In this step by step we will be introducing you to the command line text editor vim, however there are several other good options such as emacs and nano

			$vim newFile

			You should now be in the vim text editor. Here are some good vim commands for your to know

			a - insert text behind the cursor i - insert text ahead of the cursor

			k - move up j - move down l - move right h - move left

			n dd - remove “n” of lines from cursor n dw - remove “n” of words from cursor

			:q! - quit without making changes :wq - write quit

			x - delete character at cursor n p - paste “n” of times

			o - insert blank line under cursor yy - copy

			:w - write file :n - move to line “n”

			(esc key) leave insert mode

	+This is where we should probably talk about text editors.		+This is where we should probably talk about text editors.

2016-03-14T16:19:33Z

← Older revision		Revision as of 12:19, 14 March 2016
Line 99:		Line 99:
	cat newFile		cat newFile

	Excellent! We should now have ~~a line of~~ text in our newFile.		Excellent! We should now have text content in our newFile.

2016-03-14T16:18:58Z

← Older revision		Revision as of 12:18, 14 March 2016
Line 96:		Line 96:
	The cat command should not return anything. This is because the file is empty. Try adding some content to the file.		The cat command should not return anything. This is because the file is empty. Try adding some content to the file.

	echo "The ships hung in the sky in much the same way that bricks don't." >> newFile		echo $'The ships hung in the sky in much the same way that bricks don\'t.\n\n\t ― Douglas Adams, The Hitchhiker\'s Guide to the Galaxy ' >> newFile
	cat newFile		cat newFile

	Excellent! We should now have a line of text in our newFile.		Excellent! We should now have a line of text in our newFile.

2016-03-14T13:09:31Z

Creating a File

← Older revision		Revision as of 09:09, 14 March 2016
Line 89:		Line 89:
	To create a new file we will use the [http://linux.die.net/man/1/touch touch] command.		To create a new file we will use the [http://linux.die.net/man/1/touch touch] command.

	Create a new file and view the contents of that file with the [http://linux.die.net/man/1/cat ~~cat~~] command.		Create a new file and view the contents of that file with the [http://linux.die.net/man/1/cat concatenate ] command.

	touch newFile		touch newFile
Line 98:		Line 98:
	echo "The ships hung in the sky in much the same way that bricks don't." >> newFile		echo "The ships hung in the sky in much the same way that bricks don't." >> newFile
	cat newFile		cat newFile
			Excellent! We should now have a line of text in our newFile.


			+This is where we should probably talk about text editors.

	rmdir myNewDirectory		+This is where bash script should go



			rmdir ~/myNewDirectory

	== External Links ==		== External Links ==
	# [https://www.linux.com/learn/tutorials/272346-bash-101-working-at-the-cli ''Bash 101: Working at the CLI'']		# [https://www.linux.com/learn/tutorials/272346-bash-101-working-at-the-cli ''Bash 101: Working at the CLI'']