The Crystal Programming Language Forum

Bad interpreter: /usr/bin/crystal: no such file or directory

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#1

if my file sh/hello contains:

#!/usr/bin/crystal

p "hello world"

and I run sh/hello

  • it runs as expected on ubuntu
  • it returns zsh: sh/drop_all_tables: bad interpreter: /usr/bin/crystal: no such file or directory on OSX
  • crystal run sh/drop_all_tables runs as expected on OSX.

thoughts?

Edit: Solution:

this works as expected on both OSX and debian:

#!/usr/bin/env crystal
#2

Well yea, "/usr/bin/crystal: no such file or directory on OSX" is certainly true. What’s your point?

#3

I like things working

#4

@oprypin is trying to tell you that /usr/bin/crystal is not there. You have to install it.

#5

The main thing is that there isn’t any currently known installation method for macOS that will end up putting Crystal at that path.

You can certainly try #!/usr/bin/env crystal instead, but it would mostly just be frowned upon.

#6

@InstanceOfMichael the position of the Crystal executable is different on Mac, try

$ which crystal

On my Mac returns /usr/local/bin/crystal
change the first line accordingly:

#!/usr/local/bin/crystal 

p "hello world"

For not having that problem remove the first line and save the file as a Crystal source file with a .cr suffix (e.g. hello.cr) and run it with

$ crystal run hello.cr
that works on any os

#7

I don’t think your sarcasm can help a newcomer to appreciate the language and the community.
I don’t know what @bcardiff, @asterite or other core team members think about that but I don’t think is in the spirit of “For humans and machine” motto…

4 Likes
#8

@InstanceOfMichael You almost always want to use #!/usr/bin/env foo to avoid hardcoding the location of foo, as software may be installed into /usr/ or /usr/local/.

#!/usr/bin/env crystal

Is what you want.

3 Likes
#9

Generally, on UNI*Xes, if a file is not found:

  • if it is a binary, which can be in the PATH, try which the_command
  • otherwise, you can use find, like find / -name "some_name*" (to modify depending of the need). Appending 2>/dev/null to the command can be useful to.