CIS 225 Fall 2014 Lecture 6

Your browser doesn't support the features required by impress.js, so you are presented with a simplified version of this presentation.

For the best experience please use the latest Chrome, Safari or Firefox browser.

CIS 225

Lecture 6: OS Command Line Interfaces

Linux Commands

pwd - Get current directory
cd - Change directory
ls - List files
mkdir - Make new directory
rmdir - Remove directory
rm - Remove file
cp - Copy file
mv - Move file

Linux Commands 2

grep - Search for text
wc - Get word count
cat - Print files
sort - Sort items
apropos - Find commands
whereis - Find command location
whatis - Find command descriptions
man - Find command help

Linux File Permissions

ls -al - Find file permissions
- [user][group][others]
- r = read; w = write; x = execute
- rwxr--r--
chmod - Change file permissions
chown - Change file ownership
sudo - Run as administrator
script - Record commands in text file

PowerShell Commands

Get-Location - Get current directory
Set-Location - Change directory
Get-ChildItem - List files
New-Item - Make new directory
Remove-Item - Remove directory
Remove-Item - Remove file
Copy-Item - Copy file
Move-Item - Move file

PowerShell Commands 2

Find-String - Search for text
Measure-Object - Get word count
Get-Content - Print files
Sort-Object - Sort items
Get-Command - Find commands
Where-Object - Find object location
Get-Help - Find command descriptions
Get-Help - Find command help

PowerShell Commands 3

Get-Alias - Find Aliases for commands
Select-Object - Get parts of output
Out-GridView - Output to a grid view
Out-File - Output to a file
Add-Content - Add content to files
Add-Item - Create new files/folders
'-Whatif' flag - See command steps
Start-Transcript - Record commands

File Output

> Output to a file (overwrite)
>> Output to a file (append)
| Pass output of one command to another

Special Directories

./ Current Directory
../ Parent Directory
~/ Home Directory
/ System Root
- Previous Directory (Linux)
$HOME\ Home Directory (Windows)

Reading

PowerShell Cookbook - Chapter 20
Ubuntu 14.04 - Chapter 11

Assignments

Lab 3 - OS Security & Scripting 1: Due 9/22 @ 11:30 AM BEFORE CLASS