Linux 命令汇总

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1. 发现大文件

find / -size +500000000c -print

2. iostat 数据来源

[root@memblaze-lyk2 ~]# strace -eopen iostat
open("/etc/ld.so.cache", O_RDONLY|O_CLOEXEC) = 3
open("/lib64/libc.so.6", O_RDONLY|O_CLOEXEC) = 3
open("/usr/lib/locale/locale-archive", O_RDONLY|O_CLOEXEC) = 3
open("/proc/diskstats", O_RDONLY)       = 3
open("/etc/localtime", O_RDONLY|O_CLOEXEC) = 3
Linux 3.10.0-229.el7.x86_64 (memblaze-lyk2)     09/14/2015      _x86_64_        (16 CPU)

open("/proc/uptime", O_RDONLY)          = 3
open("/proc/stat", O_RDONLY)            = 3
open("/proc/diskstats", O_RDONLY)       = 3
open("/etc/sysconfig/sysstat.ioconf", O_RDONLY) = 4
avg-cpu: %user   %nice %system %iowait %steal   %idle
           2.05    0.00    0.19    0.01    0.00   97.75

Device:            tps    kB_read/s    kB_wrtn/s    kB_read    kB_wrtn
sda               0.13         0.55         0.82     515814     768028
nvme0n1        8393.54     22323.28     14388.06 21030642029 13554908264

+++ exited with 0 +++
[root@memblaze-lyk2 ~]# cat /proc/diskstats
   8       0 sda 47422 11678 1031628 291010 71505 74119 1536104 5146856 0 294183 5437824
   8       1 sda1 654 70 52362 2803 21 10 248 2145 0 2579 4948
   8       2 sda2 46414 11545 975930 286034 71484 74109 1535856 5144711 0 294051 5430711
   8       3 sda3 171 31 1616 577 0 0 0 0 0 577 577
11       0 sr0 0 0 0 0 0 0 0 0 0 0 0
259       0 nvme0n1 5257660508 0 42061284058 1409978297 2649845947 0 27109816528 2041209682 0 22228624 3530189940
[root@memblaze-lyk2 ~]#

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