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  1. #!/bin/bash
  2. s='range 192.168.1.1 192.168.1.100'
  3. sed -E '/range ([0-9]{1,3}\.){3}[0-9]{1,3}/i\ip address dhcp' <<< "$s"
  4.  
  5. sed -E '/range ((25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\.){3}(25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)([^0-9]|$)/i\ip address dhcp' <<< "$s"
Success #stdin #stdout 0.01s 5504KB
comments (?)
stdin 
Standard input is empty
stdout 
ip address dhcp
range 192.168.1.1 192.168.1.100
ip address dhcp
range 192.168.1.1 192.168.1.100
https://ideone.com/oGgULX
language:
Bash (bash 5.0.3)
created:
2 years ago
visibility:
secret

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