Linux nohup命令应用简介--让Linux的进程不受终端影响

nohup命令应用简介--让Linux的进程不受终端影响

#开启ping进程

[root@localhost ~]# ping localhost &

[2] 4169

[1]   Terminated              nohup ping localhost

[root@localhost ~]# PING localhost (127.0.0.1) 56(84) bytes of data.

64 bytes from localhost (127.0.0.1): icmp_seq=1 ttl=64 time=0.105 ms

64 bytes from localhost (127.0.0.1): icmp_seq=2 ttl=64 time=0.069 ms

...

如图

#查看后台进程：

[root@localhost ~]# ps -axu | grep ping

Warning: bad syntax, perhaps a bogus '-'? See /usr/share/doc/procps-3.2.8/FAQ

root      4169  0.0  0.0   4392   792 pts/0    S    04:08   0:00 ping localhost

root      4177  0.0  0.0   4336   728 pts/1    S+   04:10   0:00 grep ping

#关闭开启ping命令的终端，再次查看进程

[root@localhost ~]# ps -axu | grep ping

Warning: bad syntax, perhaps a bogus '-'? See /usr/share/doc/procps-3.2.8/FAQ

root      4184  0.0  0.0   4336   728 pts/1    S+   04:13   0:00 grep ping

说明：进程结束

#加上nohup命令，让进程不受终端影响

[root@localhost ~]# nohup ping localhost &

[1] 4218

[root@localhost ~]# nohup: ignoring input and appending output to `nohup.out'

#查看后台进程

[root@localhost ~]# ps -axu | grep ping

Warning: bad syntax, perhaps a bogus '-'? See /usr/share/doc/procps-3.2.8/FAQ

root      4218  0.1  0.0   4392   792 pts/0    S    04:19   0:00 ping localhost

root      4224  0.0  0.0   4336   732 pts/1    S+   04:20   0:00 grep ping

#关闭开启ping命令的中断，再次查看进程

[root@localhost ~]# ps -axu | grep ping

Warning: bad syntax, perhaps a bogus '-'? See /usr/share/doc/procps-3.2.8/FAQ

root      4218  0.0  0.0   4392   792 ?        S    04:19   0:00 ping localhost

root      4229  0.0  0.0   4336   728 pts/1    S+   04:21   0:00 grep ping

说明：进程依然还在