Bash script trouble with comparing strings

Question

I'm trying to compare strings. I get "command not found" error. How do I compare the strings?

Code:

 #!/bin/bash 
 STR="Hello World" 
 if [$STR="Hello World"]; then
   echo "passed test"
 else
   echo "didn't pass test"
 fi

Output:

 test.sh: line 4: [Hello: command not found
 didn't pass test

konsolebox · Accepted Answer · 2013-09-11 23:25:29Z

4

You should add spaces. Treat [[ or [ as if it's another command like test and other builtins. And like other commands, it requires a space after its name. It's also recommended that you use [[ ]] over [ ] in Bash since [[ ]] doesn't split its variables with IFS and do pathname expansions. It also has more features over the other.

#!/bin/bash
STR="Hello World"
if [[ $STR = "Hello World" ]]; then
    echo "passed test"
else
    echo "didn't pass test"
fi

answered Sep 11, 2013 at 23:25

konsolebox

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