Find Or Kill A Signal By Name In OS X
On Windows, signal() can only be called with SIGABRT,SIGFPE, SIGILL, SIGINT, SIGSEGV,SIGTERM, or SIGBREAK.A ValueError will be raised in any other case.Note that not all systems define the same set of signal names; anAttributeError will be raised if a signal name is not defined asSIG* module level constant.
Find or Kill A Signal By Name In OS X
You can check that the processes are the ones you're interested in by using -a to show the full process names. You can also limit the scope to your own processes (or a specific set of users) with -u or -U. See the man page for pgrep/pkill for more options.
Lots of good answers here - I used the answer accepted by the OP. Just adding a small caveat note about pkill and pgrep. As you might see from their manual pages, on your OS, some OS's have a 15-character limit on the process name. The -f option gets around that on my OS, but I was in trouble until I found that option!
The default kill command accepts command names as an alternative to PID. See kill (1). An often occurring trouble is that bash provides its own kill which accepts job numbers, like kill %1, but not command names. This hinders the default command. If the former functionality is more useful to you than the latter, you can disable the bash version by calling
awk oneliner, which parses the header of ps output, so you don't need to care about column numbers (but column names). Support regex. For example, to kill all processes, which executable name (without path) contains word "firefox" try
Terminate each specified process ID or jobID. You must own the process or be a privilegeduser. This built-in is similar to /bin/killdescribed in Chapter 25 but also allows symbolicjob names. Stubborn processes can be killed using signal 9.
The signal number or name, without the SIG prefix (e.g., HUP, notSIGHUP). The command kill -l prints a list of theavailable signal names. The list varies by system architecture; for aPC-based system, it looks like this:
The killall command is used to kill processes by name. By default, it will send a SIGTERM signal. The killall command can kill multiple processes with a single command.
The pkill command is similar to the pgrep command, in that it will kill a process based on the process name, in addition to other qualifying factors. By default, pkill will send the SIGTERM signal.
The kill command will kill a single process at a time with the given process ID. It will send a SIGTERM signal indicating to a process to stop. It waits for the program to run its shutdown routine.
The kill -9 command sends a SIGKILL signal indicating to a service to shut down immediately. An unresponsive program will ignore a kill command, but it will shut down whenever a kill -9 command is issued. Use this command with caution. It bypasses the standard shutdown routine so any unsaved data will be lost.
The only caveat to the above command is that it may not catch all of the running chrome processes. If, after running the above command, you issue the ps auxgrep chrome command and see remaining processes running, your best bet is to go back to the kill command and send signal 9 to terminate the process by PID.
This method will throw an error if the target pid does not exist. As a specialcase, a signal of 0 can be used to test for the existence of a process.Windows platforms will throw an error if the pid is used to kill a processgroup.
Syntax: os.kill(pid, sig)Parameters: pid: An integer value representing process id to which signal is to be sent. sig An integer representing signal number or the signal constant available on the host platform defined in the signal module to be sent.Return type: This method does not return any value.
A signal is an asynchronous notification sent to a process or to a specific thread within the same process to notify it of an event. Common uses of signals are to interrupt, suspend, terminate or kill a process. Signals originated in 1970s Bell Labs Unix and were later specified in the POSIX standard.
The kill(2) system call sends a specified signal to a specified process, if permissions allow. Similarly, the kill(1) command allows a user to send signals to processes. The raise(3) library function sends the specified signal to the current process.
Similarly, if the process attempted to access a memory address outside of its virtual address space, the kernel would notify the process of this violation via a SIGSEGV (segmentation violation signal). The exact mapping between signal names and exceptions is obviously dependent upon the CPU, since exception types differ between architectures.
The list below documents the signals specified in the Single Unix Specification. All signals are defined as macro constants in the header file. The name of the macro constant consists of a "SIG" prefix followed by a mnemonic name for the signal.
All the below kill conventions will send the TERM signal to the specified process. For the signals, either the signal name or signal number can be used. You need to lookup the pid for the process and give it as an argument to kill.
Instead of specifying a process by its PID, you can specify the name of the process. If more than one process runs with that name, all of them will be killed.Example: Kill all the firefox processes
Send a signal to process (see signal module constants) preemptivelychecking whether PID has been reused.On UNIX this is the same as os.kill(pid, sig).On Windows only SIGTERM, CTRL_C_EVENT and CTRL_BREAK_EVENT signalsare supported and SIGTERM is treated as an alias for kill().See also how to kill a process tree andterminate my children.
Suspend process execution with SIGSTOP signal preemptively checkingwhether PID has been reused.On UNIX this is the same as os.kill(pid, signal.SIGSTOP).On Windows this is done by suspending all process threads execution.
Resume process execution with SIGCONT signal preemptively checkingwhether PID has been reused.On UNIX this is the same as os.kill(pid, signal.SIGCONT).On Windows this is done by resuming all process threads execution.
Terminate the process with SIGTERM signal preemptively checkingwhether PID has been reused.On UNIX this is the same as os.kill(pid, signal.SIGTERM).On Windows this is an alias for kill().See also how to kill a process tree andterminate my children.
Kill the current process by using SIGKILL signal preemptivelychecking whether PID has been reused.On UNIX this is the same as os.kill(pid, signal.SIGKILL).On Windows this is done by using TerminateProcess.See also how to kill a process tree andterminate my children.
Same as subprocess.Popen but in addition it provides allpsutil.Process methods in a single class.For the following methods which are common to both classes, psutilimplementation takes precedence:send_signal(),terminate(),kill().This is done in order to avoid killing another process in case its PID hasbeen reused, fixing BPO-6973.
If the process doesn't end, you can force kill the process by sending it the [.inline-code]SIGKILL[.inline-code] signal. To do this, simply add the [.inline-code]-9[.inline-code] argument to [.inline-code]kill[.inline-code] or [.inline-code]pkill:[.inline-code]
By default, running [.inline-code]kill[.inline-code] or [.inline-code]pkill[.inline-code] sends the [.inline-code]SIGTERM[.inline-code] signal to the specified process, which is the polite way to ask the process to terminate. The process can choose to ignore or handle this signal rather than ending, either purposefully or because the process is misbehaving.
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A CTRL_C_EVENT can not be directed to a single process and is alwaysreceived by all processes that share the current console.CTRL_BREAK_EVENT on the other hand can be send to specific processes.However, in order to use it, we have to passcreationgflags-subprocess.CREATE_NEW_PROCESS_GROUP to the Popenconstructor. This parameter is only available on Windows and has nothing to dowith Unix process groups. When you set this flag, you can no longer sendCTRL_C_EVENT and if you press Ctrl-C in your console, only the rootprocess will receive a SIGINT signal. Also note, that sending anyother signal than CTRL_C_EVENT and CTRL_BREAK_EVENT willunconditionally kill the process.