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Featured in Unix

How To Use Unix Wildcards

How to use wildcard characters in Linux/Unix commands

Bash Aliases

Create an alias for common commands

Articles in Unix

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List Open Ports in Linux

Learn how to output the list of open TCP and UDP ports in Linux, as well as their IP addresses and ports using the netstat command.

Count Files in Linux

Learn how to count files and folders contained in directories and subdirectories in Linux using the ls, find, and wc commands.

How to Check the Size of Folders in Linux

Learn how to output the size of directories and subdirectories in a human-readable format in Linux and macOS using the du command.

POST JSON Data With Curl

How to send valid HTTP POST requests with JSON data payloads using the curl command and how to avoid common syntax pitfalls. Also, how to solve the HTTP 405 error code.

Create Directories Recursively With mkdir

Learn how to recursively create nested directories using the mkdir command, Bash scripts, and Python scripts.

How to Download Files With curl And wget

Learn how to start and resume the download of files via the HTTP and FTP protocols using the curl and wget commands.

Upload Files With curl

Learn how to upload a file to FTP, SFTP servers, Artifactory, and AWS S3 using the curl command.

Ignoring SSL Certificate Issues with cURL

Discover how to bypass SSL certificate verification in cURL for HTTPS endpoints, addressing both direct requests and those via proxies. We will also see how this could be handled both in the terminal and system-wide via the `.curlrc` file

Verify Certificate With OpenSSL

Learn how to verify local and remote certificates with openssl

How To Use sudo su

A quick overview of using sudo su

What Does sudo chown Do?

Why sudo chown is sudo and some common pitfalls

Removing Directories in Linux

How to remove directories and their content
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