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Product Edition
Version
kill
Basics
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Type
Command
Syntax
kill [signalNumber | signalName] process processName
Introduced
1.0
Environment
Desktop, Web and Server
Platform Support
MacOS,Mac OS X,Windows,Linux
Security
Process
Summary
Signals or quits another process or application on the same system.
Examples

kill process "rnews"
kill 9 process myProcess -- terminate with extreme prejudice
kill QUIT process it

Additional Comments
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Use the kill command to send a signal to a process (on Unix systems), or to terminate a process with extreme prejudice.

Parameters:

The signalNumber is the number of the Unix signal to send to the process. The signalName is the name of a Unix signal, minus the leading "SIG". (For example, to send SIGHUP to a process, use HUP as the signalName.) (The signalNumber or signalName parameter is ignored on Mac OS and Windows systems.)

The processName is the name of a currently executing process.

Comments:

On Mac OS systems, the kill command sends a "Quit Application" Apple event to the specified application.

On Unix systems, the kill command sends the specified signal to the process. If no signal is specified, the kill command sends SIGTERM. Check the Unix documentation for information about available signals. The file /usr/include/sys/signal.h lists signals and their corresponding signal numbers.

If possible, use the close process command instead of the kill command to terminate a process. The kill command causes an immediate exit, and may prevent the process from removing temporary files or doing other cleanup tasks.

User Comments
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