Ps mail

You're referring to the classic "ps mail" command!

ps mail is a command in Unix-like operating systems that displays the contents of the system's mailbox. The mailbox is a file that stores incoming mail messages for the system administrator.

Here's a brief overview of the ps mail command:

Syntax: ps mail

Options:

• -a or --all: Display all mail messages, including those that are older than 30 days.
• -d or --delete: Delete the specified mail message(s).
• -f or --follow: Follow the specified mail message(s) and display new messages as they arrive.
• -h or --help: Display help information.
• -l or --list: List the contents of the mailbox without displaying the message bodies.
• -m or --move: Move the specified mail message(s) to a different mailbox.
• -p or --print: Print the specified mail message(s) to the console.
• -r or --read: Read the specified mail message(s) and display their contents.
• -s or --search: Search for specific keywords or phrases in the mailbox.
• -t or --tail: Display the most recent mail messages in the mailbox.

Examples:

• ps mail: Display the contents of the mailbox.
• ps mail -a: Display all mail messages, including older ones.
• ps mail -d 123: Delete the mail message with ID 123.
• ps mail -f 123: Follow the mail message with ID 123 and display new messages as they arrive.

Keep in mind that the ps mail command is specific to Unix-like systems, and its behavior may vary depending on the system and the mail client being used.