Signals or quits another process or application on the same system.
# Metadata
Platforms: desktop, server OS: mac, windows, linux Introduced: 1.0 Security: process
# Syntax
kill [{signalNumber | signalName}] process processName
# Params
- signalNumber : The number of the Unix signal to send to the process. >*Note:* The <signalNumber> parameter is ignored on Mac OS and Windows systems. - signalName : The name of a Unix signal, minus the leading "SIG". (For example, to send SIGHUP to a process, use HUP as the <signalName>.) >*Note:* The <signalName> parameter is ignored on Mac OS and Windows systems. - processName : The name of a currently executing process.
# Examples
kill process "rnews"
kill 9 process myProcess -- terminate with extreme prejudice
kill QUIT process it
# Description
Use the kill command to send a signal to a process (on Unix), or to terminate a process with extreme prejudice.
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.
# Tags
# See
- **keyword:** file - **message:** signal - **command:** open process, quit, close process, launch - **function:** openProcessIDs, sysError, files, processID, openProcesses - **control structure:** exit - **glossary:** Unix, Apple Event, command, process