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Annotation of researchv10dc/man/adm/man2/fork.2, revision 1.1.1.1

1.1       root        1: .TH FORK 2
                      2: .CT 2 proc_man
                      3: .SH NAME
                      4: fork \(mi spawn new process
                      5: .SH SYNOPSIS
                      6: .nf
                      7: .B int fork()
                      8: .fi
                      9: .SH DESCRIPTION
                     10: .I Fork
                     11: is the only way new processes are created.
                     12: The new process's image is a copy of
                     13: that of the caller of
                     14: .IR fork .
                     15: The only distinction is
                     16: that the value returned in the old (parent) process
                     17: is the process id
                     18: of the new (child) process,
                     19: while the value returned in the child is 0.
                     20: Process ids range from 1 to 30,000.
                     21: The process id is used by
                     22: .IR wait 
                     23: (see
                     24: .IR exit (2))
                     25: and
                     26: .I kill
                     27: (see
                     28: .IR signal (2)).
                     29: .PP
                     30: Files open before the
                     31: .I fork
                     32: are shared, and have a common read-write pointer.
                     33: This is the way that
                     34: .IR sh (1)
                     35: passes standard input and output
                     36: files and sets up pipes.
                     37: .SH "SEE ALSO"
                     38: .IR exit (2),
                     39: .IR signal (2), 
                     40: .IR sh (1)
                     41: .SH DIAGNOSTICS
                     42: .BR EAGAIN ,
                     43: .BR ENOMEM

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