spreadsheet calculator **sc** is a very old console-based program. It does what the name says. I cannot find how to undo an operation in its man page. I currently use it together with RCS, *ie*. manually create versions in RCS before big changes, and rotate back to a version if needed. I am wondering if there is a better way to do it. Thanks.

In sc (spreadsheet calculator), I formatted a column with ` but was unable to insert a valid date in its cells. If I digit (or other similar notations, with or without the initial ^D`, I only get a string with no possibility to calculate date-differences. Could somebody give me any hints?

I need to sort a CSV file, but the the header row (1st row) keeps getting sorted. This is what I'm using: cat data1.csv | sort -t"|" -k 1 -o data1.csv Here's a sample line: Name|Email|Country|Company|Phone Brent Trujillo|tempus@mauris.org|Burkina Faso|Donec LLC|(612) 943-0167