pipe - open a pair of connected filehandles

- NAME
- SYNOPSIS
- DESCRIPTION

# NAME

pipe - open a pair of connected filehandles

# SYNOPSIS

pipe READHANDLE,WRITEHANDLE

# DESCRIPTION

Opens a pair of connected pipes like the corresponding system call. Note that if you set up a loop of piped processes, deadlock can occur unless you are very careful. In addition, note that Perl's pipes use IO buffering, so you may need to set `$|` to flush your WRITEHANDLE after each command, depending on the application.

See the IPC::Open2 manpage, the IPC::Open3 manpage, and Bidirectional Communication in the perlipc manpage for examples of such things.

On systems that support a close-on-exec flag on files, the flag will be set for the newly opened file descriptors as determined by the value of $^F. See $^F in the perlvar manpage.

pipe - open a pair of connected filehandles