内存从大到小排序

-bash-3.00$ ps aux | head -1 ; ps aux | sort -rn +3 | head -10
USER         PID %CPU %MEM   SZ  RSS    TTY STAT    STIME  TIME COMMAND
root     1908868  0.1  2.0 30508 29724      - A      Dec 21 235:34 /usr/sbin/secld
zhldang  2728188  0.0  0.0 1208 1288 pts/15 A    11:20:20  0:00 -bash
zhldang  1421376  0.0  0.0 2036 1056      - A    11:20:15  0:00 sshd: zhldang@p
zerbo625 2482224  0.0  0.0 1164 1244 pts/24 A    11:04:35  0:00 -bash
zerbo625 1523730  0.0  0.0 1796 1036      - A    11:04:29  0:00 sshd: zerbo625@
yxq198sm 2429092  0.0  0.0  152  156      - A    12:24:48  0:00 sleep 30
yxq198sm 1327254  0.0  0.0 1600 1872      - A      Feb 01  0:06 /usr/bin/bsh /u
yanmotia 1274070  0.0  0.0 1164  768 pts/22 A      Dec 23  0:00 -bash
xinximai 2658402  0.0  0.0 1156  760 pts/83 A      Dec 28  0:00 -bash
xifengke 2330668  0.0  0.0 1160  756 pts/80 A      Dec 05  0:00 -bash 

内存从大到小排序(详细执行命令)

-bash-3.00$ ps -ealf | head -1 ; ps -ealf | sort -rn +9 | head  -10
       F S      UID     PID    PPID   C PRI NI ADDR    SZ    WCHAN    STIME    TTY  TIME CMD
  240001 A     root  188582       1   0  60 20 2823c400 36708        *   Jan 03      - 676:39 /usr/sbin/secldapclntd
  240001 A     root 1908868       1   0  60 22 6648400 30508        *   Dec 21      - 235:40 /usr/sbin/secldapclntd
  240001 A     root  331840   86176   0  60 20 205f8400  4088            Sep 15      - 11:04 /usr/lpp/X11/bin/X -D /usr/lib/X11//rgb -T -force :0 -auth /var/dt/A:0-0xukaa
  240001 A     root 2216054  233648   0  60 20 142a400  3992 f100060002c9e8c8 11:19:59      -  0:00 sshd: zhldang [priv]
  240001 A     root 1515620  233648   0  60 20 2075f400  3992 f100060003bb0cc8 12:21:48      -  0:00 sshd: undeadbird [priv]
  240001 A     root 2719848  233648   0  60 20 916a400  3988 f100060002b068c8 13:07:55      -  0:00 sshd: wangyh0313 [priv]
  240001 A     root 2003106  233648   0  60 20 3428400  3876 f1000600038f94c8 11:02:58      -  0:00 sshd: intrepid [priv]
  240001 A     root 2560234  233648   0  60 20 44a8400  3816 f1000600018264c8 11:01:54      -  0:00 sshd: xifenfei [priv]
  240001 A     root 2846944  233648   0  60 20 22c7b400  3784 f100060003b050c8 11:04:12      -  0:00 sshd: zerbo625 [priv]
  200001 A undeadbi 2220232 1007670   0  60 20 2355f400  3104 f100060001c2c878 13:03:08  pts/9  0:00 /usr/bin/smitty

查找某个进程使用内存

-bash-3.00$ ps aux | head -1 ; ps aux | grep xifenfei
USER         PID %CPU %MEM   SZ  RSS    TTY STAT    STIME  TIME COMMAND
xifenfei 2494532  0.0  0.0 1836 1044      - A    11:02:05  0:00 sshd: xifenfei@
xifenfei 2666546  0.0  0.0 1148 1228 pts/20 A    11:02:10  0:00 -bash
root     2560234  0.0  0.0 3816 3024      - A    11:01:54  0:00 sshd: xifenfei
xifenfei 2220230  0.0  0.0  912  940 pts/20 A    13:03:06  0:00 ps aux
xifenfei 1310908  0.0  0.0  228  240 pts/20 A    13:03:06  0:00 grep xifenfei 

查找某个进程使用内存(详细执行命令)

-bash-3.00$ ps -ealf | head -1 ;ps -ealf|grep xifenfei
       F S      UID     PID    PPID   C PRI NI ADDR    SZ    WCHAN    STIME    TTY  TIME CMD
   40001 A xifenfei 2494532 2560234   0  60 20 37575400  1836          11:02:05      -  0:00 sshd: xifenfei@pts/20
  200001 A xifenfei 2510946 2666546   1  60 20 14045400   960          12:57:25 pts/20  0:00 ps -ealf
  200001 A xifenfei 2543730 2666546   0  60 20 10cc6400   228 f100010017976ca0 12:57:25 pts/20  0:00 grep xifenfei
  240001 A     root 2560234  233648   0  60 20 44a8400  3816 f1000600018264c8 11:01:54      -  0:00 sshd: xifenfei [priv]