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of=/dev/mtdblock0
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server1:~ # netstat -n | awk '/^tcp/ {++S[$NF]} END {for(a in S) print a, S[a]}'
TIME_WAIT 257
CLOSE_WAIT 117
FIN_WAIT2 2
ESTABLISHED 228
2. #vi /etc/sysctl.conf
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net.ipv4.tcp_keepalive_time = 120
net.ipv4.tcp_keepalive_probes = 2
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