1、jobs
[root@server01~]#top top-06:39:07up8:24,3users,loadaverage:0.01,0.04,0.05 Tasks:87total,1running,84sleeping,2stopped,0zombie %cpu(s):0.5us,0.4sy,0.0ni,99.0id,0.1wa,0.0hi,0.0si,0.0st KiBMem:1008392total,157936free,132356used,718100buff/cache KiBSwap:2097148total,2097148free,0used.660208availMem PIDUSERPRNIVIRTRESSHRS%cpu%MEMTIME+COMMAND 30125root20015757220761504R6.20.20:00.01top 1root2004552858123672S0.00.60:02.34systemd 2root200000S0.00.00:00.01kthreadd 3root200000S0.00.00:04.36ksoftirqd/0 4root200000D0.00.00:38.92kworker/0:0 7rootrt0000S0.00.00:00.00migration/0 8root200000S0.00.00:00.00rcu_bh 9root200000S0.00.00:01.27rcu_sched 10rootrt0000S0.00.00:02.68watchdog/0 12root0-20000S0.00.00:00.00khelper 13root200000S0.00.00:00.00kdevtmpfs 14root0-20000S0.00.00:00.00netns 15root200000S0.00.00:00.01khungtaskd 16root0-20000S0.00.00:00.00writeback 17root0-20000S0.00.00:00.00kintegrityd 18root0-20000S0.00.00:00.00bioset 19root0-20000S0.00.00:00.00kblockd [1]+已停止top##ctrl+z暂停一个任务 [root@server01~]#cat/etc/passwd|wc-l&##管道符表示后面的命令作用于前面命令的结果 [2]30138##“&”表示放在后台运行 [root@server01~]#21 jobs##jobs命令用于查看后台的任务 [1]+已停止top [2]-完成cat/etc/passwd|wc-l
2、fg
[root@server01~]#jobs [1]-已停止top [2]+已停止manfdisk [root@server01~]#fg1##将任务调度到前台运行 top-06:58:25up8:43,loadaverage:0.00,0.01,0.05 Tasks:102total,3running,82sleeping,17stopped,0zombie %cpu(s):0.0us,0.2sy,99.8id,0.0wa,153464free,136164used,718764buff/cache KiBSwap:2097148total,0used.656136availMem PIDUSERPRNIVIRTRESSHRS%cpu%MEMTIME+COMMAND 4root200000R0.20.00:40.85kworker/0:0 30083root20014302055564252S0.10.60:00.93sshd 9root200000S0.00.00:01.34rcu_sched 287root200000S0.00.00:08.18xfsaild/sda3 502root200327432269126556S0.02.70:04.39firewalld 30087root20011550821681764R0.00.20:00.21bash 1root2004552858123672S0.00.60:02.35systemd 10rootrt0000S0.00.00:02.71watchdog/0 801root200553152185205816S0.01.80:07.17tuned 20876root200000S0.00.00:00.41kworker/u12+ 2root200000S0.00.00:00.01kthreadd 3root200000S0.00.00:04.39ksoftirqd/0 7rootrt0000S0.00.00:00.00migration/0 8root200000S0.00.00:00.00rcu_bh 12root0-20000S0.00.00:00.00khelper 13root200000S0.00.00:00.00kdevtmpfs 14root0-20000S0.00.00:00.00netns ##ctrl+c结束一个任务 [root@server01~]#jobs [2]+已停止manfdisk
3、bg
[root@server01~]#jobs [2]-已停止manfdisk [3]+已停止ping-c100114.114.114.114 [root@server01~]#bg3##放在后台继续运行 [3]+ping-c100114.114.114.114& [root@server01~]#64bytesfrom114.114.114.114:icmp_seq=84ttl=58time=7.58ms 64bytesfrom114.114.114.114:icmp_seq=85ttl=58time=10.2ms 64bytesfrom114.114.114.114:icmp_seq=86ttl=58time=5.25ms job64bytesfrom114.114.114.114:icmp_seq=87ttl=58time=11.5ms s [2]+已停止manfdisk [3]-运行中ping-c100114.114.114.114&
如果正在运行一个进程，而且希望在退出帐户时该进程还不会结束，那么可以使用nohup命令（nohup command &）。该命令可以在用户退出帐户之后继续运行相应的进程。
