Shawn questions

Shawn answers

• Printing multiple columns with awk but joined by semicolon
• Shuffling parts of a file between markers
• parsing the date to calculate days until cert expiry from a shell script
• Delete duplicate JSON file based on one of the attributes
• How to determine whether a unicode character is fullwidth or halfwidth in Perl
• Run gcc -gcodeview
• Is it necessary to remove all file descriptors in the interest list before closing the epoll instance itself?
• Transform array to string using jq
• Is there a method to check if an array includes one value in SQLite?
• SQLITE json_group_array ordering