Hello, grep -vf z z is a good test.
term% p z 850f815f90e7498364c668b9e0774d96 851cef1c518242f977be3ce40714b7f8 852142a8b4f175d4fa9003ab30743106 8522f3bc66efa1edaa1e6c495e2e7b89 852684fef763a4e36d57b99a85ab366b 85377206b2292dd884a5f502f846c7d1 ... term% wc z 2209 2209 72897 z term% grep -vf z z feeaa668ee79fbbde6f7539dac41a2ed term% grep feeaa668ee79fbbde6f7539dac41a2ed z feeaa668ee79fbbde6f7539dac41a2ed term% The sample file is: http://plan9.aichi-u.ac.jp/z.gz Kenji Arisawa
