查看一下pssh命令的帮助文档：
[root@test2 ~]# pssh --version2.3.1[root@test2 ~]# pssh --helpUsage: pssh [OPTIONS] command [...]Options: --version show program's version number and exit --help show this help message and exit -h HOST_FILE, --hosts=HOST_FILE hosts file (each line "[user@]host[:port]") -H HOST_STRING, --host=HOST_STRING additional host entries ("[user@]host[:port]") -l USER, --user=USER username (OPTIONAL) -p PAR, --par=PAR max number of parallel threads (OPTIONAL) -o OUTDIR, --outdir=OUTDIR output directory for stdout files (OPTIONAL) -e ERRDIR, --errdir=ERRDIR output directory for stderr files (OPTIONAL) -t TIMEOUT, --timeout=TIMEOUT timeout (secs) (0 = no timeout) per host (OPTIONAL) -O OPTION, --option=OPTION SSH option (OPTIONAL) -v, --verbose turn on warning and diagnostic messages (OPTIONAL) -A, --askpass Ask for a password (OPTIONAL) -x ARGS, --extra-args=ARGS Extra command-line arguments, with processing for spaces, quotes, and backslashes -X ARG, --extra-arg=ARG Extra command-line argument -i, --inline inline aggregated output and error for each server --inline-stdout inline standard output for each server -I, --send-input read from standard input and send as input to ssh -P, --print print output as we get itExample: pssh -h hosts.txt -l irb2 -o /tmp/foo uptime -h：参数指定主机的文件，主机文件格式如下：
[root@test2 ~]# cat ip.test root@10.0.102.162root@10.0.102.212root@10.0.102.200
-A： 交互输入密码， -i命令，上面的解释不太清楚，测试如下：
[root@test2 ~]# pssh -h ip.test -A -i wWarning: do not enter your password if anyone else has superuserprivileges or access to your account.Password: [1] 17:55:21 [SUCCESS] root@10.0.102.212 16:41:42 up 15 days, 19:20, 2 users, load average: 0.08, 0.03, 0.05USER TTY FROM LOGIN@ IDLE JCPU PCPU WHATroot tty1 12Feb19 15days 0.01s 0.01s -bashroot pts/0 172.16.100.19 Tue08 1:38m 6:13 0.13s -bash[2] 17:55:21 [SUCCESS] root@10.0.102.200 16:41:46 up 17 days, 9 min, 2 users, load average: 0.00, 0.01, 0.05USER TTY FROM LOGIN@ IDLE JCPU PCPU WHATroot tty1 11Feb19 17days 0.01s 0.01s -bashroot pts/0 172.16.100.19 Wed15 1:00m 0.03s 0.03s -bash[3] 17:55:21 [SUCCESS] root@10.0.102.162 16:41:45 up 17 days, 8 min, 2 users, load average: 0.00, 0.01, 0.05USER TTY FROM LOGIN@ IDLE JCPU PCPU WHATroot tty1 11Feb19 16days 0.07s 0.07s -bashroot pts/0 172.16.100.19 Wed15 1:00m 0.05s 0.05s -bash[root@test2 ~]# pssh -h ip.test -A wWarning: do not enter your password if anyone else has superuserprivileges or access to your account.Password: [1] 17:55:29 [SUCCESS] root@10.0.102.212[2] 17:55:30 [SUCCESS] root@10.0.102.162[3] 17:55:30 [SUCCESS] root@10.0.102.200
批量修改密码：
#把root密码修改为 123456 [root@docker5 ~]# pssh -h ip.test -A "echo root:123456 | chpasswd"Warning: do not enter your password if anyone else has superuserprivileges or access to your account.Password: [1] 16:47:48 [SUCCESS] root@10.0.102.200[2] 16:47:48 [SUCCESS] root@10.0.102.212[3] 16:47:48 [SUCCESS] root@10.0.102.162
pscp.pssh命令与pslurp命令，一个把本地文件传送到远程主机，一个是把远程主机文件垃下来。
[root@docker5 ~]# pscp.pssh --helpUsage: pscp.pssh [OPTIONS] local remote[root@docker5 ~]# pscp.pssh -h ip.test roles.tar.gz /usr/local/src/[1] 16:50:45 [SUCCESS] root@10.0.102.212[2] 16:50:46 [SUCCESS] root@10.0.102.200[3] 16:50:46 [SUCCESS] root@10.0.102.162
pnuke kill远程机器的进程