projects / unix-history / blame
| Commit | Line | Data |
|---|---|---|
| 3eedd6d3 BJ |
1 | .TH KILL 2 |
| 2 | .SH NAME | |
| 3 | kill \- send signal to a process | |
| 4 | .SH SYNOPSIS | |
| 5 | .B kill(pid, sig); | |
| 6 | .SH DESCRIPTION | |
| 7 | .I Kill | |
| 8 | sends the signal | |
| 9 | .I sig | |
| 10 | to the process specified by the | |
| 11 | process number in r0. | |
| 12 | See | |
| 13 | .IR signal (2) | |
| 14 | for a list of signals. | |
| 15 | .PP | |
| 16 | The sending and receiving processes must | |
| 17 | have the same effective user ID, otherwise | |
| 18 | this call is restricted to the super-user. | |
| 19 | .PP | |
| 20 | If the process number is 0, | |
| 21 | the signal is sent to all other processes in the | |
| 22 | sender's process group; | |
| 23 | see | |
| 24 | .IR tty (4). | |
| 25 | .PP | |
| 26 | If the process number is \-1, and the user is the super-user, | |
| 27 | the signal is broadcast universally | |
| 28 | except to processes 0 and 1, the scheduler | |
| 29 | and initialization processes, | |
| 30 | see | |
| 31 | .IR init (8). | |
| 32 | .PP | |
| 33 | Proccesses may send signals to themselves. | |
| 34 | .SH "SEE ALSO" | |
| 35 | signal(2), kill(1) | |
| 36 | .SH DIAGNOSTICS | |
| 37 | Zero is returned if the process is killed; | |
| 38 | \-1 is returned if the process does not | |
| 39 | have the same effective user ID and the | |
| 40 | user is not super-user, or if the process | |
| 41 | does not exist. | |
| 42 | .SH "ASSEMBLER (PDP-11)" | |
| 43 | (kill = 37.) | |
| 44 | .br | |
| 45 | (process number in r0) | |
| 46 | .br | |
| 47 | .B sys kill; sig |