req.1s

Given that `req.1s` is not a standard command, a universal synopsis does not exist.

If it were a custom script or alias, its invocation might resemble:
req.1s [options] [arguments...]

N/A
    As `req.1s` is not a standard Linux command, there are no predefined or universally recognized parameters.

If it were a custom script, it might implement common options such as:
- -h, --help: Display a help message.
- -v, --version: Display version information.
- -i INTERVAL, --interval INTERVAL: Specify a time interval (e.g., 1s).
- -r REQUESTS, --requests REQUESTS: Specify a number of requests.
These are purely illustrative based on the string "req.1s" potentially implying "requests" and "1 second".

req.1s is not a standard or universally recognized Linux command. It does not appear in common Linux distributions' official repositories, nor does it have a dedicated man page. Therefore, its functionality, if any, is not defined by a common standard.

It is most probable that req.1s refers to:
- A Custom Script or Executable: An administrator or user may have created a script named `req.1s` (e.g., `req.1s.sh`) and placed it in a directory within the system's `PATH` (like `/usr/local/bin` or `~/bin`). In this case, its behavior is entirely dependent on the script's content.
- A Shell Alias: A user might have defined `req.1s` as a shorthand alias in their shell configuration file (e.g., `~/.bashrc`, `~/.zshrc`). For example: alias req.1s='some_other_command --interval 1s'.
- A File Name: `req.1s` could simply be the name of a file, which is then used as an argument to another command (e.g., cat req.1s, ls req.1s).
- A Typo: It might be a mistyped version of a different, standard command or option.

Without specific context from the system where this command was encountered, its purpose and functionality cannot be determined.

The primary caveat is that `req.1s` is not a standard Linux command. Its presence and behavior are entirely system-specific, depending on whether it's a custom script, an alias, or merely a file name. Users should investigate their system's `PATH`, shell aliases (alias req.1s), and local scripts to understand its origin and function. Relying on its existence or specific behavior across different Linux environments is not advisable.

To determine if `req.1s` exists on a specific system and what it refers to, you can use the type or which commands:
type req.1s
which req.1s
If type indicates it's an alias, check your shell's configuration files (e.g., ~/.bashrc, ~/.zshrc). If which returns a path, it's an executable script or binary.

You could create a simple script named `req.1s` that mimics a hypothetical function, e.g., to ping an address every second:
#!/bin/bash
# A hypothetical custom script named req.1s
echo "Simulating requests for 1 second..."
sleep 1
echo "Request simulation complete."
Save this to a file named `req.1s`, make it executable (chmod +x req.1s), and place it in a directory within your PATH.

There is no official or widely documented history for `req.1s` as it is not a standard Linux command. Its development and usage history would be limited to the specific environment where it has been defined or created as a custom tool.

alias, bash(1), sh(1), which(1), type(1)