THC-Secure Deletion v2.1 for UNIX is the latest release of van Hauser's suite of secure deletion and overwriting utilities. Included are 'srm' - secure deletion of files
Changes: (all) added the -f(ast) option; (smem) added a new tool: smem, which wipes free memory; (srm/sfill/smem) added rlimit resets; (sfill/sswap) quadrupled the buffer size; (srm/sfill/sswap) fix for openbsd which doesn't know O_SYNC open(2); (srm) added the -d(ot) option. Ignores "." and ".." on the commandline; (srm) fixed directory and file link races.