Steps for ending a specified process

A process is the execution of a program. MVS™ calls the basic unit of execution a job or a task; in UNIX, it's called a process. You can find out whether a process is active, and you can end it.

Before you begin: You need to know which processes you want to end and whether they are active.

Examples: Use the DISPLAY OMVS operator command or the ps command to display all active processes.

To list the address space identifiers for processes, issue:
```
DISPLAY OMVS,A=ALL
```
To display a particular ASID, where asid is a specified ASID:
```
DISPLAY OMVS,A=asid
```
To display information about all accessible processes, providing that you have the appropriate privileges:
```
ps -elf
```

Perform the following steps to end a specified process, where pppp is the process identifier (pid).

Send a SIGTERM signal using the shell kill command or use the TERM parameter of the MODIFY operator command. For example:
1. ```
kill -s term pppp 
```
2. ```
F BPXOINIT,TERM=pppp
```
If the process is not ended, then go to Step 2. Otherwise, you have canceled the process and you are finished.

_______________________________________________________________
Send a SIGKILL signal using the shell kill command or use the FORCE parameter of the MODIFY operator command. For example:
1. ```
kill -s kill pppp
```
2. ```
F BPXOINIT,FORCE=pppp
```
If the process is still not ended, then go to Step 3. Otherwise, you have canceled the process and you are all done.

_______________________________________________________________
Send a stronger SIGKILL signal using the shell kill command or use the SUPERKILL parameter of the MODIFY operator command. For example:
- ```
kill -K pppp
```
- ```
F BPXOINIT,SUPERKILL=pppp
```
If the process is still not ended, then go to Step 4. Otherwise, you have canceled the process and you are finished.

_______________________________________________________________

If the previous steps did not end the process, then use the CANCEL command. Issue:

CANCEL jobname,a=asid

Example: The following example shows how to obtain the ASIDs for a user with the TSO/E user ID JOE and then cancel the user's process that is running the sleep 6000 command.

display omvs,u=joe
BPXO001I 17.12.23 DISPLAY OMVS 361

OMVS      ACTIVE             OMVS=(93)
USER     JOBNAME  ASID        PID       PPID  STATE   START    CT_SECS
JOE      JOE      001D          5          1  1RI   17.00.10     1.203
JOE      JOE3     001B     131076     262147  1SI   17.00.10      .111
  LATCHWAITPID=          0 CMD=sleep 6000
JOE      JOE1     0041     262147          5  1WI   17.00.10      .595
  LATCHWAITPID=          0 CMD=-sh

cancel joe3,a=1b

_______________________________________________________________

When you are done, you have ended the specified process.