ps¶
查看进程的最常用命令，最常用的比如 ps -ef, ps aux
rss ,代表物理内存，pmem代表 物理内存百分比，
c cmd simple name of executable
C pcpu cpu utilization
f flags flags as in long format F field
g pgrp process group ID
G tpgid controlling tty process group ID
j cutime cumulative user time
J cstime cumulative system time
k utime user time
m min_flt number of minor page faults
M maj_flt number of major page faults
n cmin_flt cumulative minor page faults
N cmaj_flt cumulative major page faults
o session session ID
p pid process ID
P ppid parent process ID
r rss resident set size
R resident resident pages
s size memory size in kilobytes
S share amount of shared pages
t tty the device number of the controlling tty
T start_time time process was started
U uid user ID number
u user user name
v vsize total VM size in KiB
y priority kernel scheduling priority
常看进程¶
查看最占用物理内存的前20个进程。 rss代表物理内存，args代表这条进程的内容，也就是命令，pid代表进程id，这里没写出来。
ps -eo rss,pmem,pcpu,vsize,args | sort -k 1 -r -n |head -20|nl