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#coding=gbk
import subprocess
listexes=['start apps.exe','start apps.exe','start apps.exe']
for exe in listexes:
pro=subprocess.Popen(exe, shell=True)
time.sleep(20)
pro = subprocess.Popen(cmd, stdout=subprocess.PIPE,
shell=True, preexec_fn=os.setsid)
os.killpg(pro.pid, signal.SIGTERM)
发送SIGTERM到所有pro进程中。