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I'm trying to write a shell script with an OR statement and I believe the syntax is correct yet its not working properly - no matter what the value is it always response Yes! (even though the value is 09). Here's the script:
Code:
#!/bin/sh
DOM=`date +%d`
echo "Today's date of the month is the $DOM."
if [ $DOM="07" ] || [ $DOM="14" ] || [ $DOM="21" ] || [ $DOM="28" ]; then
echo "Yes!"
else
echo "No!"
fi
I've already tried using double equal signs (== instead of =), but I get the same results.
Thanks for posting your solution. From your post #1:
Quote:
Any ideas?
You need to read man bash. But that's a PITA. man files are much easier to read when converted PDF's (especially as they are searchable).
You might like to see here
Have fun.
That's right. The question is why these expressions evaluated as TRUE. The answer is that they were interpreted as single and alone strings which are evaluated always as TRUE. E.g.
Code:
[ 09=07 ] # this is TRUE
[ a ] # this is TRUE as well
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