IshallbeThatIshallbe:~ iamthat$ ps -ef |grep ping

  502   450     1   0  9:30PM ??         0:00.05 ping www.baidu.com

  502   492   475   0  9:32PM ttys000    0:00.00 grep ping

IshallbeThatIshallbe:~ iamthat$ kill -9 502

-bash: kill: (502) - No such process

IshallbeThatIshallbe:~ iamthat$ kill -9 450

IshallbeThatIshallbe:~ iamthat$ ps -ef |grep ping

  502   495   475   0  9:33PM ttys000    0:00.00 grep ping

首先我这里 kill ping 百度的进程 重新演示

创建程序：

IshallbeThatIshallbe:~ iamthat$ nohup ping www.baidu.com >> ping.txt &

[1] 507      ---注意这为进程号

IshallbeThatIshallbe:~ iamthat$

可以看到该程序不断有输出

IshallbeThatIshallbe:~ iamthat$ tail -f ping.txt

64 bytes from 180.97.33.108: icmp_seq=19 ttl=54 time=46.477 ms

64 bytes from 180.97.33.108: icmp_seq=20 ttl=54 time=45.426 ms

64 bytes from 180.97.33.108: icmp_seq=21 ttl=54 time=46.482 ms

64 bytes from 180.97.33.108: icmp_seq=22 ttl=54 time=45.679 ms

64 bytes from 180.97.33.108: icmp_seq=23 ttl=54 time=46.772 ms

64 bytes from 180.97.33.108: icmp_seq=24 ttl=54 time=47.559 ms

64 bytes from 180.97.33.108: icmp_seq=25 ttl=54 time=45.568 ms

64 bytes from 180.97.33.108: icmp_seq=26 ttl=54 time=44.652 ms

64 bytes from 180.97.33.108: icmp_seq=27 ttl=54 time=44.747 ms

64 bytes from 180.97.33.108: icmp_seq=28 ttl=54 time=45.868 ms

64 bytes from 180.97.33.108: icmp_seq=29 ttl=54 time=47.068 ms

64 bytes from 180.97.33.108: icmp_seq=30 ttl=54 time=46.171 ms

64 bytes from 180.97.33.108: icmp_seq=31 ttl=54 time=47.026 ms

64 bytes from 180.97.33.108: icmp_seq=32 ttl=54 time=45.162 ms

64

Last login: Wed Apr  1 21:37:38 on ttys000

IshallbeThatIshallbe:~ iamthat$ tail -f ping.txt

64 bytes from 180.97.33.108: icmp_seq=76 ttl=54 time=48.586 ms

64 bytes from 180.97.33.108: icmp_seq=77 ttl=54 time=46.160 ms

64 bytes from 180.97.33.108: icmp_seq=78 ttl=54 time=48.099 ms

64 bytes from 180.97.33.108: icmp_seq=79 ttl=54 time=44.345 ms

64 bytes from 180.97.33.108: icmp_seq=80 ttl=54 time=47.058 ms

64 bytes from 180.97.33.108: icmp_seq=81 ttl=54 time=44.917 ms

64 bytes from 180.97.33.108: icmp_seq=82 ttl=54 time=44.886 ms

64 bytes from 180.97.33.108: icmp_seq=83 ttl=54 time=47.997 ms

64 bytes from 180.97.33.108: icmp_seq=84 ttl=54 time=45.928 ms

64 bytes from 180.97.33.108: icmp_seq=85 ttl=54 time=46.988 ms

64 bytes from 180.97.33.108: icmp_seq=86 ttl=54 time=44.337 ms

64 bytes from 180.97.33.108: icmp_seq=87 ttl=54 time=48.580 ms

可以看到那个507的进程一直在跑

IshallbeThatIshallbe:~ iamthat$ ps -ef |grep ping

  502   507     1   0  9:36PM ??         0:00.05 ping www.baidu.com

  502   528   520   0  9:38PM ttys000    0:00.00 grep ping

IshallbeThatIshallbe:~ iamthat$