怎样在批处理模式下运行top命令

#top-bc -o +%MEM |head-n 20

top-06:42:00 up 8 days,20:25,1 user, load average:0.66,0.74,0.80

Tasks:146 total,1 running,145 sleeping,0 stopped,0 zombie

%Cpu(s):0.0 us,0.0 sy,0.0 ni,100.0id,0.0 wa,0.0 hi,0.0 si,0.0 st

KiBMem:3880940 total,1422044 free,1059176 used,1399720 buff/cache

KiBSwap:1048572 total,514640 free,533932 used.2475984 avail Mem

PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND

18105 mysql 20014539001560968816 S 0.04.02:12.98/usr/sbin/mysqld --daemonize --pid-file=/var/run/mysqld/mysqld.pid

1841 root 2002289801070365360 S 0.02.80:05.56/usr/local/cpanel/3rdparty/perl/528/bin/perl -T -w/usr/local/cpanel/3rdparty/bin/spamd --max-children=3--max-spare=1--allowed-ips=127.0.0.+

4301 root 2002302081046081816 S 0.02.70:03.77 spamd child

8139 nobody 200257000271083408 S 0.00.70:00.04/usr/sbin/httpd -k start

7961 nobody 200256988269123160 S 0.00.70:00.05/usr/sbin/httpd -k start

8190 nobody 200256976268123140 S 0.00.70:00.05/usr/sbin/httpd -k start

8353 nobody 200256976268123144 S 0.00.70:00.04/usr/sbin/httpd -k start

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