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29.2. ftop - Tool to show progress of open files and file systems

ftop 是一个显示进程打开文件的工具

Tue Jan 20 16:25:50 2015                                                                                 ftop 1.0
Processes:  47 total, 0 unreadable                                                Press h for help, o for options
Open Files: 57 regular, 0 dir, 149 chr, 0 blk, 12 pipe, 59 sock, 15 misc

_  PID    #FD  USER      COMMAND                                                                                  
-- 413    10   root      /sbin/udevd -d
|  +- 3    -rw  --	935/935      /dev/.udev/queue.bin
-- 982    7    root      auditd
|  +- 5    --W  --     3.1M/3.1M     /var/log/audit/audit.log
-- 1002   5    root      /sbin/rsyslogd -i /var/run/syslogd.pid -c 5
|  +- out  --W  --     8059/8059     /var/log/messages
|  +- err  --W  --    16443/16443    /var/log/cron
|  +- 3    -r-  --        0/0        /proc/kmsg
|  +- 4    --W  --    14976/14976    /var/log/secure
-- 1106   17   www       nginx: worker process                   
|  +- err  --W  --   538920/538920   /var/log/nginx/error.log (fd 11 for PID 1106)