linux命令及工具集

1) top或者ps -ef | grep tomcat-web執行查看進程號

2) netstat -anop | grep 8000 執行查看進程號

3) ls -l /proc/20214  列出指定進程號的詳細信息，其中exe行是運行程序的目錄

    cat /proc/20974/cmdline  查看啓動時的命令行參數

    cat /proc/20974/environ 查看啓動時的環境變量

4) 系統分析工具

[root@base /]# uptime
 16:18:26 up 29 days,  1:27,  1 user,  load average: 0.00, 0.00, 0.00

top - 16:18:59 up 29 days,  1:28,  1 user,  load average: 0.00, 0.00, 0.00
Tasks: 141 total,   1 running, 140 sleeping,   0 stopped,   0 zombie
Cpu(s):  0.2%us,  0.2%sy,  0.0%ni, 99.6%id,  0.0%wa,  0.0%hi,  0.0%si,  0.0%st
Mem:   8061216k total,  4989352k used,  3071864k free,   277284k buffers
Swap:  4194300k total,   151872k used,  4042428k free,   791076k cached

PID USER      PR  NI  VIRT  RES  SHR S %CPU %MEM    TIME+  COMMAND                                 
 2137 root      20   0 4349m 130m 9092 S  0.3  1.7  69:49.37 java
 2255 root      20   0  125m 1996  796 S  0.3  0.0  46:38.63 redis-serve

[root@base /]# mpstat
Linux 2.6.32-573.el6.x86_64 (base) 	11/09/2016 	_x86_64_	(4 CPU)

04:20:52 PM  CPU    %usr   %nice    %sys %iowait    %irq   %soft  %steal  %guest   %idle
04:20:52 PM  all    0.30    0.00    0.20    0.00    0.00    0.01    0.00    0.00   99.49

[root@base /]# iostat
Linux 2.6.32-573.el6.x86_64 (base) 	11/09/2016 	_x86_64_	(4 CPU)

avg-cpu:  %user   %nice %system %iowait  %steal   %idle
           0.30    0.00    0.21    0.00    0.00   99.49

Device:            tps   Blk_read/s   Blk_wrtn/s   Blk_read   Blk_wrtn
scd0              0.00         0.00         0.00        264          0
sda               1.20         1.31        14.97    3294692   37590088
dm-0              0.04         0.06         0.24     143112     610400
dm-1              1.35         0.66        10.61    1662130   26644512
dm-2              0.53         0.58         4.12    1463922   10335064

[root@base /]# vmstat
procs -----------memory---------- ---swap-- -----io---- --system-- -----cpu-----
 r  b   swpd   free   buff  cache   si   so    bi    bo   in   cs us sy id wa st
 0  0 151872 3071508 277284 791092    0    0     0     2    3    3  0  0 99  0  0

[root@base /]# free
             total       used       free     shared    buffers     cached
Mem:       8061216    4989708    3071508          8     277284     791092
-/+ buffers/cache:    3921332    4139884 
Swap:      4194300     151872    4042428

[root@base /]# nicstat
    Time      Int   rKB/s   wKB/s   rPk/s   wPk/s    rAvs    wAvs %Util    Sat
16:22:10       lo    0.86    0.86   10.54   10.54   83.87   83.87  0.00   0.00
16:22:10     eth0    7.72    6.88   21.95   23.94   360.1   294.3  0.01   0.00

[root@base /]# dstat
----total-cpu-usage---- -dsk/total- -net/total- ---paging-- ---system--
usr sys idl wai hiq siq| read  writ| recv  send|  in   out | int   csw 
  0   0  99   0   0   0| 672B 7665B|   0     0 |  29B  124B| 405   492

[root@base /]# sar
Linux 2.6.32-573.el6.x86_64 (base) 	11/09/2016 	_x86_64_	(4 CPU)

04:00:01 PM     CPU     %user     %nice   %system   %iowait    %steal     %idle
04:10:01 PM     all      0.22      0.00      0.17      0.00      0.00     99.61
04:20:01 PM     all      0.39      0.00      0.20      0.06      0.00     99.36
Average:        all      0.30      0.00      0.19      0.03      0.00     99.48

[root@base /]# netstat -ano | grep 6379
tcp        0      0 0.0.0.0:6379                0.0.0.0:*                   LISTEN      off (0.00/0/0)
tcp        0      0 192.168.1.116:57997         192.168.1.116:6379          ESTABLISHED keepalive (140.09/0/0)
tcp        0      0 192.168.1.116:6379          192.168.1.116:57997         ESTABLISHED keepalive (140.08/0/0)
tcp        0      0 :::6379                     :::*                        LISTEN      off (0.00/0/0)
tcp        0      0 ::ffff:192.168.1.116:44953  ::ffff:192.168.1.101:6379   ESTABLISHED keepalive (4956.67/0/0)
tcp        0      0 ::ffff:192.168.1.116:48178  ::ffff:192.168.1.101:6379   ESTABLISHED keepalive (7182.90/0/0)

[root@base /]# pidstat -p 2259
Linux 2.6.32-573.el6.x86_64 (base) 	11/09/2016 	_x86_64_	(4 CPU)

04:33:56 PM       PID    %usr %system  %guest    %CPU   CPU  Command
04:33:56 PM      2259    0.04    0.07    0.00    0.11     2  redis-server