Pedagogy

Introduction to shell scripting | why to learn shell scripting | High level components

rename files and directories in linux | renaming using mv command in linux

/etc/group file & /etc/gshadow file in linx | passwords in group | newgrp command | gpasswd command

set date , time and timezone in linux | view calendar | ncal , date & timedatectl command in linux

Two dimensional character array in c | memory mapping of 2D character array

test command to check condition | =~ operator in [[ ]] | [ ] vs [[ ]] | advance features of [[ ]]

umask command in linux | set default permissions for files and directories in linux | umask -S

reading content from a file in c | fgetc() funtion in c | file input output in c programming :Part 2

Pointers Introduction In C programming | addresses and dereference in c | pointers in c : part 1

if else in shell scripting | user creation shell script using if else concept | true & false command

while loop in c | do while loop in c programming | exit controlled loops in c | loops in c : part 2

standard input output redirection in linux | pipe in linux | stdin, stdout & stderr stream in linux

wildcards in linux | asterisk , question mark , square brackets , curly brackets , escape character

What is Shebang | use of shebang | interpreter program | execute commands with path in linux

introduction to functions in c | prototype , definition , calling , return type | functions : part 1

library functions in c | adding custom function to library | creating library | functions : part 5

View your public IP address and private IP address | login to router | what is my ip address

change user and group ownership of files and directories in Linux | chown command | chgrp command

operations on array variables in shell scripting - Part 2 | append elements to an array | replace

Linux shells in detail | View default shell | Install other shells | Change default shell in linux

call by reference method in c | passing values to a function | functions in c programming : part 3

select loop in shell scripting | PS3 shell variable | creating menu in shell scripting

break and continue in c programming | advantages of break & continue | example | loops in c : part 3

Cookie Attributes | Domain Cookie Attribute | Path Cookie Attribute | Scope of cookies | Examples

typecasting in c programming | type conversion in c | implicit and explicit type conversions

basic permissions in linux | permission classes | chmod command with octal & symbolic representation

secure flag in a cookie | secure cookie against MITM attacks | working of secure flags

signals and traps in shell scripting | trap command | ctrl + C on a shell script | trap handlers

Functions in Shell Scripting | passing arguments to functions | return for function in shell script

double parenthesis in shell scripting | (( )) vs $(( )) | mathematical calculations with bc & (( ))

enum in c programming | enumerated data type in c | enumerators in c | enum vs macros in c

fgets() and fputs() function in c | string input output in files | file handling in c : part 4

conditional compilation directives in c |

Port Numbers and Its types | Default ports | Dynamic ports | Registered Ports | Well known ports

if else in c programming | if else ladder in c | nested if else | decision control structure in c

managing services using systemctl command in linux | status , start , stop , enable ... options

foreground and background processes in linux | nohup and disown command | jobs fg and bg command

process parameters in linux | ps command in linux

copy files & directories | move files & directories in linux | cp command | mv command

Difference between shell variables and environment variables in linux | alias in linux

NAT & its types | Static NAT | Dynamic NAT | Port address translation | Network address translation

View Source Port And Destination Port | lsof command for ip connections | PAT Working demo

function returning pointer in c | return pointer from function in c | pointers : part 10

special permissions in Linux | setuid , setgid and sticky bit in linux | A working demonstration

Difference between text files and binary files | text files vs binary files | file handling : part 8

groups in linux | create , modify and delete groups | types of groups | remove & add user to a group

finding unique lines in linux | sort lines in linux | sort command in linux | uniq command in linux

writing to file in c programming | fputc() function in c | file handling in c : part 3

compress - decompress files using gzip & bzip2 in linux | tar command to manage compressed files

fread() and fwrite() function in c programming | file input output in c : part 9