What does "unary operator expected" mean
From Linuxintro
Revision as of 14:24, 20 December 2011 by imported>ThorstenStaerk
When you work with Linux scripts on the command line, you will sometimes get an error message saying
unary operator expected
And you may wonder what this means. To give you an example, let's write a short bash script. Just copy and paste the lines below into a Linux Shell:
cat >test.sh<<EOF echo "how is your name? " read name if [ $name = "Thorsten" ]; then echo "I know you"; fi EOF chmod 777 test.sh
After you did this, you have a script test.sh that will ask you for your name and say "I know you" if your name is Thorsten. Now if you don't enter a name and just press enter you will get this:
