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30 .\" @(#)setpgid.2 8.1 (Berkeley) 6/4/93
44 .Fn setpgid "pid_t pid" "pid_t pgrp"
46 .Fn setpgrp "pid_t pid" "pid_t pgrp"
49 sets the process group of the specified process
55 is zero, then the call applies to the current process.
58 is zero, then the process id of the process specified by
62 If the invoker is not the super-user, then the affected process
63 must have the same effective user-id as the invoker or be a descendant
64 of the invoking process.
67 returns 0 when the operation was successful.
68 If the request failed, \-1 is returned and the global variable
73 will fail and the process group will not be altered if:
78 argument matches the process ID of a child process of the calling process,
79 and the child process has successfully executed one of the exec functions.
83 argument is less than zero.
85 The effective user ID of the requested process is different
86 from that of the caller and the process is not a descendant
87 of the calling process.
91 argument does not match the process ID of the calling process or of a
92 child process of the calling process.
105 and is retained for calling convention compatibility with historical