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pstree清楚看清运行进程的关系

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CentOS 这样安装

yum install psmisc

看看我的vps上

init─┬─console-kit-dae───2*[{console-kit-da}]
├─courierlogger───authdaemond───5*[authdaemond]
├─2*[courierlogger───couriertcpd]
├─cron───4*[cron───sh───python]
├─dbus-daemon
├─7*[getty]
├─master─┬─pickup
│        ├─proxymap
│        ├─qmgr
│        └─tlsmgr
├─mongod───7*[{mongod}]
├─mysqld───20*[{mysqld}]
├─nginx───2*[nginx]
├─openvpn
├─php5-fpm───3*[php5-fpm]
├─pptpd
├─2*[python───5*[{python}]]
├─rsyslogd───3*[{rsyslogd}]
├─snmpd
├─sshd───sshd─┬─bash───top
│             └─bash───pstree
├─udevd───2*[udevd]
└─upstart-udev-br

pstree -p 可同时显示进程号


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