linux系统中查看进程的命令有ps、top、pstree……还有一些各种显示的监控工具程序。
一个进程运行中,很可能会有其他的子进程随之运行,而使用pstree命令就可以非常清楚简洁的看到这些子进程与父进程的关系了。
pstree命令直接使用,将显示系统中的进程树,可以清晰的显示出系统中的进程结构。
[root@searu ~]# pstree

pstree命令直接使用时显示系统中的进程树
Usage: pstree [ -a ] [ -c ] [ -h | -H PID ] [ -l ] [ -n ] [ -p ] [ -u ] [ -A | -G | -U ] [ PID | USER ] pstree -V Display a tree of processes. -a show command line arguments -A use ASCII line drawing characters -c don't compact identical subtrees -h highlight current process and its ancestors -H PID highlight this process and its ancestors -G use VT100 line drawing characters -l don't truncate long lines -n sort output by PID -p show PIDs; implies -c -u show uid transitions -U use UTF-8 (Unicode) line drawing characters -V display version information -Z show SELinux security contexts PID start at this PID; default is 1 (init) USER show only trees rooted at processes of this user
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