I entered the following lines into a shell script called “test.sh”:

echo Hello World
STR=”Hello Again”
echo $STR

After chmod to executable, I ran the script with ./test.sh. However, I get the message

./test.sh: line 3  STR: Command not found

What am I doing wrong?

  • 1
    Did terdon's answer solve your question? If not it could be that you accidentally have spaces around your variable assignment.
    – Arronical
    Jul 5, 2016 at 9:38
  • @Voker just an stylistic comment based on my suggestion: I think it is best to use Blockquote for error messages instead of Code block; at the end, this is not code but some text the Bash interpreter is returning.
    – fedorqui
    Jul 5, 2016 at 12:23
  • @fedorqui why? Quote blocks don't preserve formatting, they interpret special characters (e.g. *,_, #) as markdown, and are rendered differently by screen reader software. I think that anything that is either given or received by a computer should be in code blocks. You never know when the exact format can be relevant. Especially when dealing with things like this where unicode comes into play.
    – terdon
    Jul 6, 2016 at 11:24
  • @terdon it really depends on cases and there is even a request to Add format for logs/warnings/error messages which allows word-wrapping and preserves newlines. To me, if it is just a line like this case, I prefer quote blocks since it makes it easier to understand what is code and what is errors.
    – fedorqui
    Jul 6, 2016 at 11:42
  • @fedorqui I guess we should take it to meta but I always prefer fixed-width font and exact format reproduction whenever posting a message that is either read or produced by a computer.
    – terdon
    Jul 6, 2016 at 11:57

1 Answer 1


What are you using to create that script? The quote characters you have in your question are wrong. They're not regular double quotes (") but . The regular quotes are:

$ uniprops '"' | head -1

While yours are:

$ uniprops '”' | head -1

So, just use regular quotes and you'll be fine:

echo Hello World
STR="Hello Again"
echo "$STR" ## Get into the habit of ALWAYS quoting your variables as well
  • Thanks for the reply Terdon. The double quotes in the file are correct, The post was from an email.
    – Jay Silver
    Jul 5, 2016 at 9:20
  • 1
    uniprops looks cool. I found the page (is that our own tchrist?). Do I have to download it from source, or is it available in a package manager somewhere? E: Unable to locate package uniprops
    – TRiG
    Jul 5, 2016 at 13:57
  • 1
    I don't use Perl much (barely at all). I just want to know more than the minimum about Unicode.
    – TRiG
    Jul 5, 2016 at 14:52
  • 1
    @TRiG well, in Ubuntu, it's as simple as sudo apt-get install cpanminus; sudo cpanm Unicode::Tussle and then you have the uniprops command. Of course, tchrist wrote the damn thing so you may as well ask him in chat :)
    – terdon
    Jul 5, 2016 at 14:56
  • 1
    I regretfully run into this sort of nonsense all the time. A particular wiki system at my employer seems to have a nasty habit of translating hyphen-minus - U+002D into hyphen U+2010 (or similar). Then things like uname ‐a stop working :-/. Email clients often have similar nefarious habits - especially when using HTML formatting - another good reason to prefer plain-text emails. Jul 5, 2016 at 18:57

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