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<(commands ...) in bash/zsh makes the output behavior as a file.
Does a POSIX equivalent exist?
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POSIX defines the application programming interface (API), along with Unix command line shells and utility interfaces. This ensure software compatibility with flavors of Unix and other operating systems. The POSIX shell is implemented for many UNIX like operating systems.
You can use POSIX standard in many shells such as, dash , bash , ksh , mksh , yash , zsh , etc. You need to be aware that each shell has its own commands and options or different options top of the POSIX specification.
POSIX Shell is a command line shell for computer operating system which was introduced by IEEE Computer Society. POSIX stands for Portable Operating System Interface. POSIX Shell is based on the standard defined in Portable Operating System Interface (POSIX) – IEEE P1003.
Although most commands do the same thing as sh. bash is not a POSIX compliant shell. It is a dialect of the POSIX shell language. Bash can run in a text window and allows the user to interpret commands to do various tasks.
mkfifo foo.fifo
## if your "commands" is multiple commands
# { commands ...; } >foo.fifo &
# otherwise, if it's just one
commands ... >foo.fifo &
something_else foo.fifo
is the closest available equivalent to
something_else <( commands ... )
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