linux中的作业管理与进程管理

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作业管理：&、【ctrl】-z、jobs、fg、bg、kill
1、
直接将命令放到后台“执行”的&
2、
将“当前”作业放到后台“暂停”，等价于【ctrl】-z
3、
观察当前后台作业的状态：jobs
4、
将后台作业拿到前台处理：bg
5、
让作业在后台运行：bg
6、
管理后台作业：kill
进程管理：
1、
ps
2、
top
3、
pstree
系统资源的观察
1、
free
2、
uname
3、
uptime
4、
netstat
5、
dmesg
6、
sar
进程的执行顺序
1、
PRI(new)=PRI(old)+nice
2、
Nice
3、
Renice