From https://www.gnu.org/software/bash/manual/html_node/Pipelines.html https://www.gnu.org/software/bash/manual/html_node/Pipelines...: > If ‘|&’ is used, comm

From https://www.gnu.org/software/bash/manual/html_node/Pipelines.html https://www.gnu.org/software/bash/manual/html_node/Pipelines...: > If ‘|&’ is used, command1’s standard error, in addition to its standard output, is connected to command2’s standard input through the pipe; it is shorthand for 2>&1 |. This implicit redirection of the standard error to the standard output is performed after any redirections specified by the command.