centos7.2 get pid by process name with python3.6
#-*- encoding:UTF-8 -*-
import os
import sys
import string
import psutil
import re
def get_pid(name):
process_list = psutil.pids()
pid = 0
for i in range(0, len(process_list)):
p = psutil.Process(process_list[i])
if len(p.cmdline())>=2:
process_info = str(p.cmdline()[1])
result = process_info.find(name)
if result != -1:
pid = process_list[i]
break
print(pid)
return pid
def main(argv):
name = argv[1]
#print(name)
get_pid(name)
if __name__ == "__main__":
main(sys.argv)
关于：psutil 5.2.2使用说明参见：
https://pypi.python.org/pypi/psutil/5.2.2
Example usages
CPU
>>> import psutil >>> psutil.cpu_times() scputimes(user=3961.46, nice=169.729, system=2150.659, idle=16900.540, iowait=629.59, irq=0.0, softirq=19.42, steal=0.0, guest=0, nice=0.0) >>> >>> for x in range(3): ... psutil.cpu_percent(interval=1) ... 4.0 5.9 3.8 >>> >>> for x in range(3): ... psutil.cpu_percent(interval=1, percpu=True) ... [4.0, 6.9, 3.7, 9.2] [7.0, 8.5, 2.4, 2.1] [1.2, 9.0, 9.9, 7.2] >>> >>> for x in range(3): ... psutil.cpu_times_percent(interval=1, percpu=False) ... scputimes(user=1.5, nice=0.0, system=0.5, idle=96.5, iowait=1.5, irq=0.0, softirq=0.0, steal=0.0, guest=0.0, guest_nice=0.0) scputimes(user=1.0, nice=0.0, system=0.0, idle=99.0, iowait=0.0, irq=0.0, softirq=0.0, steal=0.0, guest=0.0, guest_nice=0.0) scputimes(user=2.0, nice=0.0, system=0.0, idle=98.0, iowait=0.0, irq=0.0, softirq=0.0, steal=0.0, guest=0.0, guest_nice=0.0) >>> >>> psutil.cpu_count() 4 >>> psutil.cpu_count(logical=False) 2 >>> >>> psutil.cpu_stats() scpustats(ctx_switches=20455687, interrupts=6598984, soft_interrupts=2134212, syscalls=0) >>> >>> psutil.cpu_freq() scpufreq(current=931.42925, min=800.0, max=3500.0) >>>
Memory
>>> import psutil >>> psutil.virtual_memory() svmem(total=10367352832, available=6472179712, percent=37.6, used=8186245120, free=2181107712, active=4748992512, inactive=2758115328, buffers=790724608, cached=3500347392, shared=787554304) >>> psutil.swap_memory() sswap(total=2097147904, used=296128512, free=1801019392, percent=14.1, sin=304193536, sout=677842944) >>>
Disks
>>> import psutil >>> psutil.disk_partitions() [sdiskpart(device='/dev/sda1', mountpoint='/', fstype='ext4', opts='rw,nosuid'), sdiskpart(device='/dev/sda2', mountpoint='/home', fstype='ext, opts='rw')] >>> >>> psutil.disk_usage('/') sdiskusage(total=21378641920, used=4809781248, free=15482871808, percent=22.5) >>> >>> psutil.disk_io_counters(perdisk=False) sdiskio(read_count=719566, write_count=1082197, read_bytes=18626220032, write_bytes=24081764352, read_time=5023392, write_time=63199568, read_merged_count=619166, write_merged_count=812396, busy_time=4523412) >>>
Network
>>> import psutil >>> psutil.net_io_counters(pernic=True) {'eth0': netio(bytes_sent=485291293, bytes_recv=6004858642, packets_sent=3251564, packets_recv=4787798, errin=0, errout=0, dropin=0, dropout=0), 'lo': netio(bytes_sent=2838627, bytes_recv=2838627, packets_sent=30567, packets_recv=30567, errin=0, errout=0, dropin=0, dropout=0)} >>> >>> psutil.net_connections() [pconn(fd=115, family=<AddressFamily.AF_INET: 2>, type=<SocketType.SOCK_STREAM: 1>, laddr=('10.0.0.1', 48776), raddr=('93.186.135.91', 80), status='ESTABLISHED', pid=1254), pconn(fd=117, family=<AddressFamily.AF_INET: 2>, type=<SocketType.SOCK_STREAM: 1>, laddr=('10.0.0.1', 43761), raddr=('72.14.234.100', 80), status='CLOSING', pid=2987), pconn(fd=-1, family=<AddressFamily.AF_INET: 2>, type=<SocketType.SOCK_STREAM: 1>, laddr=('10.0.0.1', 60759), raddr=('72.14.234.104', 80), status='ESTABLISHED', pid=None), pconn(fd=-1, family=<AddressFamily.AF_INET: 2>, type=<SocketType.SOCK_STREAM: 1>, laddr=('10.0.0.1', 51314), raddr=('72.14.234.83', 443), status='SYN_SENT', pid=None) ...] >>> >>> psutil.net_if_addrs() {'lo': [snic(family=<AddressFamily.AF_INET: 2>, address='127.0.0.1', netmask='255.0.0.0', broadcast='127.0.0.1', ptp=None), snic(family=<AddressFamily.AF_INET6: 10>, address='::1', netmask='ffff:ffff:ffff:ffff:ffff:ffff:ffff:ffff', broadcast=None, ptp=None), snic(family=<AddressFamily.AF_LINK: 17>, address='00:00:00:00:00:00', netmask=None, broadcast='00:00:00:00:00:00', ptp=None)], 'wlan0': [snic(family=<AddressFamily.AF_INET: 2>, address='192.168.1.3', netmask='255.255.255.0', broadcast='192.168.1.255', ptp=None), snic(family=<AddressFamily.AF_INET6: 10>, address='fe80::c685:8ff:fe45:641%wlan0', netmask='ffff:ffff:ffff:ffff::', broadcast=None, ptp=None), snic(family=<AddressFamily.AF_LINK: 17>, address='c4:85:08:45:06:41', netmask=None, broadcast='ff:ff:ff:ff:ff:ff', ptp=None)]} >>> >>> psutil.net_if_stats() {'eth0': snicstats(isup=True, duplex=<NicDuplex.NIC_DUPLEX_FULL: 2>, speed=100, mtu=1500), 'lo': snicstats(isup=True, duplex=<NicDuplex.NIC_DUPLEX_UNKNOWN: 0>, speed=0, mtu=65536)} >>>
Sensors
>>> import psutil >>> psutil.sensors_temperatures() {'acpitz': [shwtemp(label='', current=47.0, high=103.0, critical=103.0)], 'asus': [shwtemp(label='', current=47.0, high=None, critical=None)], 'coretemp': [shwtemp(label='Physical id 0', current=52.0, high=100.0, critical=100.0), shwtemp(label='Core 0', current=45.0, high=100.0, critical=100.0), shwtemp(label='Core 1', current=52.0, high=100.0, critical=100.0), shwtemp(label='Core 2', current=45.0, high=100.0, critical=100.0), shwtemp(label='Core 3', current=47.0, high=100.0, critical=100.0)]} >>> >>> psutil.sensors_fans() {'asus': [sfan(label='cpu_fan', current=3200)]} >>> >>> psutil.sensors_battery() sbattery(percent=93, secsleft=16628, power_plugged=False) >>>
Other system info
>>> import psutil >>> psutil.users() [user(name='giampaolo', terminal='pts/2', host='localhost', started=1340737536.0), user(name='giampaolo', terminal='pts/3', host='localhost', started=1340737792.0)] >>> >>> psutil.boot_time() 1365519115.0 >>>
Process management
>>> import psutil >>> psutil.pids() [1, 2, 3, 4, 5, 6, 7, 46, 48, 50, 51, 178, 182, 222, 223, 224, 268, 1215, 1216, 1220, 1221, 1243, 1244, 1301, 1601, 2237, 2355, 2637, 2774, 3932, 4176, 4177, 4185, 4187, 4189, 4225, 4243, 4245, 4263, 4282, 4306, 4311, 4312, 4313, 4314, 4337, 4339, 4357, 4358, 4363, 4383, 4395, 4408, 4433, 4443, 4445, 4446, 5167, 5234, 5235, 5252, 5318, 5424, 5644, 6987, 7054, 7055, 7071] >>> >>> p = psutil.Process(7055) >>> p.name() 'python' >>> p.exe() '/usr/bin/python' >>> p.cwd() '/home/giampaolo' >>> p.cmdline() ['/usr/bin/python', 'main.py'] >>> >>> p.pid 7055 >>> p.ppid() 7054 >>> p.parent() <psutil.Process(pid=7054, name='bash') at 140008329539408> >>> p.children() [<psutil.Process(pid=8031, name='python') at 14020832451977>, <psutil.Process(pid=8044, name='python') at 19229444921932>] >>> >>> p.status() 'running' >>> p.username() 'giampaolo' >>> p.create_time() 1267551141.5019531 >>> p.terminal() '/dev/pts/0' >>> >>> p.uids() puids(real=1000, effective=1000, saved=1000) >>> p.gids() pgids(real=1000, effective=1000, saved=1000) >>> >>> p.cpu_times() pcputimes(user=1.02, system=0.31, children_user=0.32, children_system=0.1) >>> p.cpu_percent(interval=1.0) 12.1 >>> p.cpu_affinity() [0, 1, 2, 3] >>> p.cpu_affinity([0, 1]) # set >>> p.cpu_num() 1 >>> >>> p.memory_info() pmem(rss=10915840, vms=67608576, shared=3313664, text=2310144, lib=0, data=7262208, dirty=0) >>> p.memory_full_info() # "real" USS memory usage (Linux, OSX, Win only) pfullmem(rss=10199040, vms=52133888, shared=3887104, text=2867200, lib=0, data=5967872, dirty=0, uss=6545408, pss=6872064, swap=0) >>> p.memory_percent() 0.7823 >>> p.memory_maps() [pmmap_grouped(path='/lib/x8664-linux-gnu/libutil-2.15.so', rss=32768, size=2125824, pss=32768, shared_clean=0, shared_dirty=0, private_clean=20480, private_dirty=12288, referenced=32768, anonymous=12288, swap=0), pmmap_grouped(path='/lib/x8664-linux-gnu/libc-2.15.so', rss=3821568, size=3842048, pss=3821568, shared_clean=0, shared_dirty=0, private_clean=0, private_dirty=3821568, referenced=3575808, anonymous=3821568, swap=0), pmmap_grouped(path='/lib/x8664-linux-gnu/libcrypto.so.0.1', rss=34124, rss=32768, size=2134016, pss=15360, shared_clean=24576, shared_dirty=0, private_clean=0, private_dirty=8192, referenced=24576, anonymous=8192, swap=0), pmmap_grouped(path='[heap]', rss=32768, size=139264, pss=32768, shared_clean=0, shared_dirty=0, private_clean=0, private_dirty=32768, referenced=32768, anonymous=32768, swap=0), pmmap_grouped(path='[stack]', rss=2465792, size=2494464, pss=2465792, shared_clean=0, shared_dirty=0, private_clean=0, private_dirty=2465792, referenced=2277376, anonymous=2465792, swap=0), ...] >>> >>> p.io_counters() pio(read_count=478001, write_count=59371, read_bytes=700416, write_bytes=69632, read_chars=456232, write_chars=517543) >>> >>> p.open_files() [popenfile(path='/home/giampaolo/svn/psutil/setup.py', fd=3, position=0, mode='r', flags=32768), popenfile(path='/var/log/monitd', fd=4, position=235542, mode='a', flags=33793)] >>> >>> p.connections() [pconn(fd=115, family=<AddressFamily.AF_INET: 2>, type=<SocketType.SOCK_STREAM: 1>, laddr=('10.0.0.1', 48776), raddr=('93.186.135.91', 80), status='ESTABLISHED'), pconn(fd=117, family=<AddressFamily.AF_INET: 2>, type=<SocketType.SOCK_STREAM: 1>, laddr=('10.0.0.1', 43761), raddr=('72.14.234.100', 80), status='CLOSING'), pconn(fd=119, family=<AddressFamily.AF_INET: 2>, type=<SocketType.SOCK_STREAM: 1>, laddr=('10.0.0.1', 60759), raddr=('72.14.234.104', 80), status='ESTABLISHED'), pconn(fd=123, family=<AddressFamily.AF_INET: 2>, type=<SocketType.SOCK_STREAM: 1>, laddr=('10.0.0.1', 51314), raddr=('72.14.234.83', 443), status='SYN_SENT')] >>> >>> p.num_threads() 4 >>> p.num_fds() 8 >>> p.threads() [pthread(id=5234, user_time=22.5, system_time=9.2891), pthread(id=5235, user_time=0.0, system_time=0.0), pthread(id=5236, user_time=0.0, system_time=0.0), pthread(id=5237, user_time=0.0707, system_time=1.1)] >>> >>> p.num_ctx_switches() pctxsw(voluntary=78, involuntary=19) >>> >>> p.nice() 0 >>> p.nice(10) # set >>> >>> p.ionice(psutil.IOPRIO_CLASS_IDLE) # IO priority (Win and Linux only) >>> p.ionice() pionice(ioclass=<IOPriority.IOPRIO_CLASS_IDLE: 3>, value=0) >>> >>> p.rlimit(psutil.RLIMIT_NOFILE, (5, 5)) # set resource limits (Linux only) >>> p.rlimit(psutil.RLIMIT_NOFILE) (5, 5) >>> >>> p.environ() {'LC_PAPER': 'it_IT.UTF-8', 'SHELL': '/bin/bash', 'GREP_OPTIONS': '--color=auto', 'XDG_CONFIG_DIRS': '/etc/xdg/xdg-ubuntu:/usr/share/upstart/xdg:/etc/xdg', 'COLORTERM': 'gnome-terminal', ...} >>> >>> p.as_dict() {'status': 'running', 'num_ctx_switches': pctxsw(voluntary=63, involuntary=1), 'pid': 5457, ...} >>> p.is_running() True >>> p.suspend() >>> p.resume() >>> >>> p.terminate() >>> p.wait(timeout=3) 0 >>> >>> psutil.test() USER PID %CPU %MEM VSZ RSS TTY START TIME COMMAND root 1 0.0 0.0 24584 2240 Jun17 00:00 init root 2 0.0 0.0 0 0 Jun17 00:00 kthreadd root 3 0.0 0.0 0 0 Jun17 00:05 ksoftirqd/0 ... giampaolo 31475 0.0 0.0 20760 3024 /dev/pts/0 Jun19 00:00 python2.4 giampaolo 31721 0.0 2.2 773060 181896 00:04 10:30 chrome root 31763 0.0 0.0 0 0 00:05 00:00 kworker/0:1 >>>
Further process APIs
>>> for p in psutil.process_iter(): ... print(p) ... psutil.Process(pid=1, name='init') psutil.Process(pid=2, name='kthreadd') psutil.Process(pid=3, name='ksoftirqd/0') ... >>> >>> def on_terminate(proc): ... print("process {} terminated".format(proc)) ... >>> # waits for multiple processes to terminate >>> gone, alive = psutil.wait_procs(procs_list, timeout=3, callback=on_terminate) >>>
Windows services
>>> list(psutil.win_service_iter()) [<WindowsService(name='AeLookupSvc', display_name='Application Experience') at 38850096>, <WindowsService(name='ALG', display_name='Application Layer Gateway Service') at 38850128>, <WindowsService(name='APNMCP', display_name='Ask Update Service') at 38850160>, <WindowsService(name='AppIDSvc', display_name='Application Identity') at 38850192>, ...] >>> s = psutil.win_service_get('alg') >>> s.as_dict() {'binpath': 'C:\Windows\System32\alg.exe', 'description': 'Provides support for 3rd party protocol plug-ins for Internet Connection Sharing', 'display_name': 'Application Layer Gateway Service', 'name': 'alg', 'pid': None, 'start_type': 'manual', 'status': 'stopped', 'username': 'NT AUTHORITY\LocalService'}