python 实用脚本
1.用python实现一个查看某网段所有主机的状态（3秒实现）#vim ping.py
import subprocess
import threading
def ping(host):
result = subprocess.call(
'ping -c2 %s &> /dev/null' % host,
shell=True
)
if result == 0:
print "%s:up" % host
else:
print "%s:down" % host
if __name__ == '__main__':
ips = ['172.40.55.%s' % i for i in range(1, 255)]
for ip in ips:
t = threading.Thread(target=ping, args=(ip,))
t.start()
# python mtping.py
172.40.55.1:up
172.40.55.66:up
172.40.55.6:down
172.40.55.114:up
172.40.55.2:down
172.40.55.3:down
172.40.55.115:up
。。。。。
2.利用ssh实现多线程并发访问(可以同时创建删除，该密码等）
# yum install -y python-paramiko
#vim allhost.py
import getpass
import os
import paramiko
import sys
import threading
def remote_comm(host, passwd, comm, user='root'):
ssh = paramiko.SSHClient()
ssh.set_missing_host_key_policy(paramiko.AutoAddPolicy())
ssh.connect(host, username=user, password=passwd)
stdin, stdout, stderr = ssh.exec_command(comm)
out = stdout.read()
err = stderr.read()
if out:
print '%s:\n%s' % (host, out),
if err:
print '%s:\n%s' % (host, err),
ssh.close()
if __name__ == '__main__':
if len(sys.argv) != 3:
print "Usage: %s ipfile 'command'" % sys.argv
sys.exit(1)
if not os.path.isfile(sys.argv):
print "No such file:", sys.argv
sys.exit(2)
ipfile = sys.argv
command = sys.argv
pwd = getpass.getpass()
with open(ipfile) as fobj:
for line in fobj:
ip = line.strip()
t = threading.Thread(target=remote_comm, args=(ip, pwd, command))
t.start()
#vim ipaddr.txt
192.168.4.1
192.168.4.2
192.168.4.3
192.168.4.4
# python remote_comm.py ipaddr.txt tedu.cn 'useradd bob'
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