MKFIFO(1) BSD General Commands Manual MKFIFO(1)NAMEmkfifo — make fifos
SYNOPSISmkfifo [-m mode] fifo_name ...
The mkfifo utility creates the fifos requested, in the order specified.
The options are as follows:
-m Set the file permission bits of the created fifos to the speci‐
fied mode, ignoring the umask(2) of the calling process. The
mode argument takes any format that can be specified to the
chmod(1) command. If a symbolic mode is specified, the op sym‐
bols ‘+’ (plus) and ‘-’ (hyphen) are interpreted relative to an
assumed initial mode of “a=rw” (read and write permissions for
If the -m option is not specified, fifos are created with mode 0666 modi‐
fied by the umask(2) of the calling process. The mkfifo utility requires
write permission in the parent directory.
The mkfifo utility exits 0 on success, and >0 if an error occurs.
SEE ALSOmkdir(1), rm(1), mkfifo(2), mknod(2), mknod(8)STANDARDS
The mkfifo utility is expected to be IEEE Std 1003.2 (“POSIX.2”) compli‐
The mkfifo command appeared in 4.4BSD.
BSD January 5, 1994 BSD