tels yszrnxnpjfcbloodgatecom moin thursday 04 october 2007 000613 ben morrow wrote quoth qtog3epoawmhperlorg perldoc f srand consequently perlfuncpod contains following note need something much random default seed cryptographic purposes checksumming compressed output one rapidly changing operating system status programs usual method example srand time unpack l ps axww gzip problem ps axww gzip returns output every time least system bentyr ps axwwgzip gzip compressed data written terminal use f force compression help type gzip h case gzips stdout terminal says gzip writing pipe srand docs perfectly happy least system ps axww gzip cat gzip output suse 101 addition note documented method seed rand poor least system following holds time easily guessed even guess hour end 3600 different values eg less 16 bit 16 bit result unpackl somehow returns 16 bit since expression blindly xors bit together basically end 16 bit vary seed oops best tels ps first email kubuntu 704 64 bit never ever touch running system even upgrade cpu single dualcoreanybody interested hear tale woe signed fri oct 5 183327 2007 key 0x93b84c15 view photo gallery httpbloodgatecomphotos pgp key httpbloodgatecomtelsasc per email want travel around world invited speak lot different places write unix operating system linus torvalds wed 06 aug 2008 053807 0200 perl 46019 documentation srand problem code snippet