Quick Guide To Linux

Introduction

I am constantly ploughing through countless web search pages looking for a Linux command I used in 1994 that floats around in my memory teasing me with qualities of omnipotence, the panacea. Well, this is where I will capture them and store them, my butterfly jar of Linux commands !

User Stuff

Become omnipotent (root access):

sudo -s

Who is logged in:

whoami 

Create a user, this will also create a home folder and password:

adduser <name>

List all users:

cat /etc/passwd
 
Delete a user:
 

userdel userName

List all groups:

cat /etc/group

File Manipulation

Create a folder:

mkdir <folder>
 
Make a file:

touch <filename>
 
Change permissions:
 
chmod 777 <file>
 
Remove a folder:

rmdir <folder>
 
Find a file:

find . -name <filename>
 
Find a string in a file (ignore case):

grep -i <string> <files>
 
Find a string in a file, searching all sub-folders:

grep -r 'string string' .
 
List all files and file info:

ls -al