Sorry to be continuing this thread, but I find a certain kind of elegance in
bash which isn't actually there, but helps me sleep at night.bash# iptoint(){ oct1=`echo $1|awk -F\. '{print $1}'`; oct2=`echo $1|awk -F\. '{print $2}'`; oct3=`echo $1|awk -F\. '{print $3}'`; oct4=`echo $1|awk -F\. '{print $4}'`; echo $[($oct1<<24)+($oct2<<16 )+($oct3<<8)+$oct4 ];}
bash# inttoip(){ echo $[$1>>24].$[($1>>16)&255].$[($1>>8)&255].$[$1&255]; }bash# inttoip 1089055123
64.233.169.147
BASH? Hahaha. Real Admins use sh. More portable(*).
Simple:
v=$1;for n in 4 3 2;do
eval o$n=`expr $v % 256`;v=`expr $v / 256`
done; echo $v.$o2.$o3.$o4
Needlessly complex (just to keep up sh's reputation for complexity):
v4=$1;for n in 4 3 2;do
eval o$n=`eval expr \\$v$n % 256`;eval v`expr $n - 1`=`eval expr \\$v$n / 256`
done; echo $v1.$o2.$o3.$o4
$ ipscript 1089055123
64.233.169.147
$
(*) Not a claim of actual portability of this code. Just having fun
writing UGLY shell code.
... JG
