10進数と16進数と2進数の変換例 # perl -e '$n=12345; $s = unpack("H*", pack("N*", $n)); $s=~s/^0*//g; $n=$hex; print $s;' 3039 # perl -e '$n=12345; $s = unpack("N*", pack("N*", $n)); $s=~s/^0*//g; $n=$hex; print $s;' 12345 # perl -e '$n=1234…