Hi, I found an error in the info page for version 8.31. As linked below, in the join(1) documentation, the 3rd line is
sort file1 file1 file2 | uniq but should be sort file1 file1 file2 | uniq -u I wonder, why no one noticed, or bothered to report it. Anyway, great documentation! This section is mind opening. Martin Castillo [1]: https://www.gnu.org/software/coreutils/manual/html_node/Set-operations.html#Set-operations
