.hd cto "copy STDIN to STDOUT up to a sentinel" 03/20/80 cto [ ] .ds 'Cto' copies its first standard input to its first standard output, terminating either at end of file or the first occurrence of . In order to be recognized, must appear on a line by itself. This termination line is not copied. If no argument is specified, defaults to "-EOF". .sp 'Cto' is useful in shell files for terminating programs that read from the command stream. It is virtually a necessity for generating end-of-file on terminals that cannot generate a control-c character. .es >> cto | x paron file1 file2 delete file1 -EOF .sa cat (1), copy (1), slice (1)