list.txt:
af3400
af3500
cdf666
bgh400
bgfn44
123456
788000
567890
output.txt:
af3400
af3500
bgfn44
bgh400
cdf666
123456
567890
788000
please help
list.txt:
af3400
af3500
cdf666
bgh400
bgfn44
123456
788000
567890
output.txt:
af3400
af3500
bgfn44
bgh400
cdf666
123456
567890
788000
please help