December 2011
2 posts
Floating Point Arithmetic in Shell
echo “scale=2; 2.51+2.51” | bc 5.02
CentOS Asterisk iptables
Add the following rules to /etc/sysconfig/iptables
-A INPUT -i lo -j ACCEPT -A INPUT -m state —state RELATED,ESTABLISHED -j ACCEPT -A INPUT -p tcp -m tcp —dport 22 -j ACCEPT -A INPUT -p udp -m udp —dport 5060 -j ACCEPT -A INPUT -p udp -m udp —dport 10000:20000 -j ACCEPT -A INPUT -p udp -m udp —dport 4000:4999 -j ACCEPT -A INPUT -p udp -m udp —dport 4569 -j...