eg. replace last occurrence of "50" to "XX" in each line:
[COLOR=dark violet] input:[/color]
one.two.50.three.50.
ble.5040.50.one
111.5011.three
5023.550.ccc50.5000.sdd50...
[COLOR=dark violet] output:[/color]
one.two.50.three.XX.
ble.5040.XX.one
111.XX11.three
5023.550.ccc50.5000.sddXX...
thank you in advance!
[COLOR=dark violet] input:[/color]
one.two.50.three.50.
ble.5040.50.one
111.5011.three
5023.550.ccc50.5000.sdd50...
[COLOR=dark violet] output:[/color]
one.two.50.three.XX.
ble.5040.XX.one
111.XX11.three
5023.550.ccc50.5000.sddXX...
thank you in advance!