黑马linux网络编程网课笔记

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netstat -apn | grep client #能看见网络状态标志,例如ESTABLISHED

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cat /proc/sys/fs/file-max  # 这个数值是系统所能打开文件数量的最大值,取决于硬件

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ulimit -a #查看系统的参数
core file size          (blocks, -c) 0
data seg size           (kbytes, -d) unlimited
scheduling priority             (-e) 0
file size               (blocks, -f) unlimited
pending signals                 (-i) 7364
max locked memory       (kbytes, -l) 65536
max memory size         (kbytes, -m) unlimited
open files                      (-n) 65535
pipe size            (512 bytes, -p) 8
POSIX message queues     (bytes, -q) 819200
real-time priority              (-r) 0
stack size              (kbytes, -s) 8192
cpu time               (seconds, -t) unlimited
max user processes              (-u) 7364
virtual memory          (kbytes, -v) unlimited
file locks                      (-x) unlimited

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ulimit -n num
#可以修改open files的个数,但是不能超过/etc/security/limits.conf中hard limit的值,其中soft limit是默认值