Put char with sed

put char on position X with sed
 
put space on position 5
echo 1234567 | sed 's/./& /5'

put . on position 5
echo 1234567 | sed 's/./&./5'

SNMP Oracle Linux

  sudo yum install net-snmp net-snmp-utils -y    nano /etc/snmp/snmpd.conf  agentAddress  udp:10.20.1.2:161 rocommunity public systemctl res...

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