This article talks about the syntax of a Shell Pipeline in Bash
All command(s) in a pipeline are executed:
This page talks about pipeline (e ia command that takes the output of a command as input), a succession of a command in bash is called a list
[time [-p]] pipeline]
If the pipeline is not executed asynchronously (see Lists), the shell waits for all commands in the pipeline to complete.
Each command in a pipeline is executed as a separate process (i.e., in its own subshell). The shell waits for all commands in the pipeline to terminate before returning a value.
If pipefail is enabled, the pipeline's return status is the value of the last (rightmost) command to exit with a non-zero status, or zero if all commands exit successfully.
If the reserved word ‘!’ precedes the pipeline, the exit status is the logical negation of the exit status.