MD5: (lsof_4.76.bz2) = 2abfb90f217a80efa3aa040ad69154cf sum: 31245 88 lsof_4.76.bz2 You may need to use sum's -r option (or cksum -o1) to get a matching result. Even then the block count may not match, depending on the block size your sum (or cksum) program reports. The sum program that generated the above value considers block size to be 512. The most reliable authentication method is to use GPG with the detached certificate in lsof_4.76.sig -- e.g., $ gpg --verify lsof_4.76.sig lsof_4.76.bz2 Victor A. Abell Mon Aug 29 16:07:29 EST 2005