老李分享：《Linux Shell脚本攻略》 要点（八）上

老李分享：《Linux Shell脚本攻略》 要点（八）

1、打印进程
[root@localhost program_test]# ps -e | head
PID TTY TIME CMD
1 ? 00:00:03 init
2 ? 00:00:00 kthreadd
3 ? 00:00:00 migration/0
4 ? 00:00:00 ksoftirqd/0
5 ? 00:00:00 migration/0
6 ? 00:00:00 watchdog/0
7 ? 00:00:00 events/0
8 ? 00:00:00 cgroup
9 ? 00:00:00 khelper

2、top 占用CPU最多的进程列表
[root@localhost program_test]# top
top - 23:45:17 up 1:12, 5 users, load average: 0.00, 0.00, 0.00
Tasks: 153 total, 1 running, 143 sleeping, 9 stopped, 0 zombie
Cpu(s): 0.3%us, 0.3%sy, 0.0%ni, 99.0%id, 0.0%wa, 0.3%hi, 0.0%si, 0.0%st
Mem: 1030528k total, 377184k used, 653344k free, 32588k buffers
Swap: 2064376k total, 0k used, 2064376k free, 170968k cached

PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
4429 root 20 0 2704 1140 880 R 0.7 0.1 0:00.12 top
21 root 20 0 0 0 0 S 0.3 0.0 0:01.63 ata_sff/0
2462 yy 20 0 73100 23m 18m S 0.3 2.3 0:12.11 vmtoolsd
1 root 20 0 2900 1436 1212 S 0.0 0.1 0:03.10 init
3、列出占CPU最多的进程
[root@localhost program_test]# ps -eo comm,pcpu --sort -pcpu | head
COMMAND %CPU
Xorg 0.5
vmtoolsd 0.2
vmtoolsd 0.2
init 0.0
kthreadd 0.0
migration/0 0.0
ksoftirqd/0 0.0
migration/0 0.0
watchdog/0 0.0