linux 下查看各类信息（持续补充）
1、查看网卡速度（100Mb/1000Mb）
core file size (blocks, -c) 0data seg size (kbytes, -d) unlimitedscheduling priority (-e) 0file size (blocks, -f) unlimitedpending signals (-i) 137216max locked memory (kbytes, -l) 32max memory size (kbytes, -m) unlimitedopen files (-n) 65536pipe size (512 bytes, -p) 8POSIX message queues (bytes, -q) 819200real-time priority (-r) 0stack size (kbytes, -s) 10240cpu time (seconds, -t) unlimitedmax user processes (-u) 137216virtual memory (kbytes, -v) unlimitedfile locks (-x) unlimited
