swapping ip and hostname in /etc/hostfile

[torajeshkg]

Guru's of Perl,

i have host file and i want to swap hostname and ip address fields ?

thx in advance
grk

 

[John W. Krahn]

Guru's of Perl,

i have host file and i want to swap hostname and ip address fields ?

perl -lane 'if(/^\s*#/){print;}else{print"$F[1]\t$F[0]";}' /etc/hosts

perl -i~ -lape'/^\s*#/||($_="$F[1]\t$F[0]")' /etc/hosts


John

 

[grk]

i cant say more thx for all you guys for helping me.
Happy new Year too!
grk