If you ever need an example of a Unix/Linux shell script where you need to determine whether today is a weekend day, I can confirm that this code works:
# like "SAT" or "SUN" dayName=`date +%a | tr '[:lower:]' '[:upper:]'` if [ $dayName = "SAT" -o $dayName = "SUN" ] then echo "WEEKEND" else echo "other" fi
That code results in
dayName being something like
SUN, so the if/then test prints whether “today” is a weekend day or not. The
tr command converts the output from the
date command to uppercase. That isn’t completely necessary, but if you don’t use it, you have to test again the strings
Sun, so I prefer it in this case. This code will work under both the Bourne and BASH shells.