Explore Linux Commands, Shell Scripting over a weekend

Brief overview about linux operating system

• Brief Introduction about Linux Operating Systems

• History of Linux Operating System

• Linux Distributions

• Linux Kernel Architecture Fundamentals

Linux Basic Commands

• uname – print system information

• arch – print machine hardware architecture name

• hostid – prints numeric identifier of current host

• hostname – print local host name

• free – display amount free and used memory in the system

• id – prints real and effective user id and group id

• logname – prints the user’s login name

• whoami – prints the effect user id

• users – prints the currently logged in users information

• groups – print the groups that a user is in

• who – show who is logged in

• date – print or set the system date and time

• cal – displays a calendar

• printenv – print all or part of environment variables

• echo – writes argument into standard output

• cd – change the current working directory

• mkdir – make directories

• df – reports file system disk space usage

• du – estimates the file space usage

• which – shows full path of the command

• whatis – displays one line manual page descriptions

• whereis – locate the binary, source, and manual page files for a command

• sum – checksum and count the blocks in a file

• cksum – checksum and count the bytes in a file

• md5sum – compute and check MD5 message digest

• base64 – base64 encode/decode data and print to standard output

• sha1sum – compute and check SHA1 message digest

• sha256sum – compute and check SHA256 message digest

• sha384sum – compute and check SHA384 message digest

• sha512sum – compute and check SHA512 message digest

File and Directory Management Commands

• mkdir – make directories

• rmdir – remove empty directories

• rm – remove files or directories

• rm – remove files or directories

• reverse search of commands instead of typing in command terminal

• cd – change the working directory

• basename, dirname – strip directory and suffix from filenames

• cp – copy files and directories

• mv — move files

• ln – make links between files

• unlink – call the unlink function to remove the specified file

• stat, fstat, lstat, fstatat – get file status

• od – dump files in octal and other formats

• cat – concatenate files and print on the standard output

• tac – concatenate and print files in reverse

• nl – number lines of files

• head – output the first part of files

• tail – output the last part of files

• more – file perusal filter for crt viewing

• less – opposite of more

• grep — search a file for a pattern

• tr – translate or delete characters

• cut – remove sections from each line of files

Process Management Commands

• ps – report a snapshot of the current processes.

• pstree – display a tree of processes

• uptime – displays system running time

• kill – sends a signal to the process

• nice – run a program with modified scheduling priority

• top – display Linux processes

• pmap – report memory map of a process

• slabtop – display kernel slab cache information in real time

• tload – graphic representation of system load average

• lsof – list open files

• proc – process information pseudo-filesystem

• procinfo – Shows System Statistics from /proc Filesystem

Linux Root File System and Hierarchy

• /bin

• /boot

• /dev

• /sbin

• /usr

• /var

• /proc

• /sys

• /lib

Linux Shell Scripting Basics

• Brief Introduction

• Simple Shell Script

• Shell Variables

• Array variables

• Arithmetic Operators

• If – Decision Making

• Relational Operators

• Boolean Operators

• String Operators

• File test operator

• Control Loop ( While, For, Until )

Who this course is for:

• fresh / beginner / passionate of linux operating systems