How To Create and Run Bash Script?

How To Create and Run Bash Script?

Bash is a Unix and Linux shell and command interface language. The bash was released in 1989 with the GNU project. The Bash became popular with Linux and related distributions like Ubuntu, Debian, CentOS, RHEL, etc. Bash provides a very useful command-line interface with complete scripting language features. Linux commands can be executed via the … Read more

Linux pwd Command Tutorial

Linux pwd Command Tutorial

Linux and Unix operating systems provide the pwd command which prints the full pathname of the current working directory. The pwd name comes from print working directory . As a simple command is provided few options. the pwd command is provided as a shell built-in command for most of the shells like Bourne shell, bash, … Read more

How To Generate Random Number In Bash Linux?

How To Generate Random Number In Bash Linux?

Linux bash provides different ways to generate random numbers. Random numbers can be used for different cases like security, selection, generating random content, etc. Linux bash can be used to generate random numbers by using the operating system devices, commands, etc. Using the $RANDOM Environment Variable The bash shell provides the $RANDOM environment variable which … Read more

Linux telnet Command Tutorial

Linux telnet Command Tutorial

Telnet is a network protocol and tool used to connect remote systems via a command-line interface. Similar to SSH, telnet can be used to manage remote systems. Telnet use the TCP port 23. Event the telnet is created by Microsoft it is popularly used Linux and network systems. In this tutorial we examine how to … Read more

How To Check/Find OpenSSL Version?

How To Check/Find OpenSSL Version?

The OpenSSL is an open-source library that provides cryptographic functions and implementations. OpenSSL is a defacto library for cryptography-related operations and is used by a lot of different applications. OpenSSL is provided as a library and application. OpenSSL provides functions and features like SSL/TLS, SHA1, Encryption, Decryption, AES, etc. Find OpenSSL Version The OpenSSL provides … Read more

rsync Command Tutorial with Examples

rsync Command Tutorial with Examples

The rsync is a utility to transfer and synchronize files and folders between different computers in an efficient and secure way. The rsync command is provided by all Linux distributions, Unix systems. The rsync command provides easy synchronization, compression for network optimization, multithread performance, etc. In this tutorial, we examine how can we use the … Read more

chown Command Tutorial

chown Command Tutorial

The chown command is used to change user and group ownership on Linux and Unix systems. The owner of the files, directories can be changed in different ways by using the chown command. The chown name is the short form of the change ownership . The ownership of a file or directory can be only … Read more

grep Command Tutorial In Linux with Examples

grep Command Tutorial In Linux with Examples

The grep command is the very popular command used to filter string, text, and data in files and command outputs. From an academic point of view, the grep command searches for PATTERNS in each FILE. PATTERNS can be simple text, number, string, or regex (regular expressions). grep Command Syntax The grep command has the following … Read more

Linux chmod Command Tutorial with Examples

Linux chmod Command Tutorial with Examples

Linux and Unix operating systems provide the chmod command in order to change access permission for the files and folders. The chmod command name comes from change mode . The read, write, execute permissions with the sticky bit feature can be changed by using the chmod command. The chmod command is created in 1971 with … Read more

tcpdump Tutorial with Examples

tcpdump Tutorial with Examples

The tcpdump command or tool is used to analyze network packets on Linux systems. It provides the ability to parse, filter and display network packets and protocols in different ways. The tcpdump is created in 1988 for BSD systems and ported most of the Unix, Linux operating systems and became very popular. The tcpdump is … Read more