How to solve “bad interpreter: No such file or dir

问题:

I'm trying to run a sh script and get the following error on Mac:

/usr/bin/perl^M: bad interpreter: No such file or directory

How can I fix this?

回答1:

Remove ^M control chars with

perl -i -pe 'y|\r||d' script.pl

回答2:

/usr/bin/perl^M:

Remove the ^M at the end of usr/bin/perl from the #! line at the beginning of the script. That is a spurious ASCII 13 character that is making the shell go crazy.

Possibly you would need to inspect the file with a binary editor if you do not see the character.

You could do like this to convert the file to Mac line-ending format:

$ vi your_script.sh

once in vi type:

 :set ff=unix

 :x

回答3:

The problem is that you're trying to use DOS/Windows text format on Linux/Unix/OSX machine.

In DOS/Windows text files a line break, also known as newline, is a combination of two characters: a Carriage Return (CR) followed by a Line Feed (LF). In Unix text files a line break is a single character: the Line Feed (LF).

Dos2unix can convert for you the encoding of files, in example:

dos2unix yourfile yourfile

For help, run: man dos2unix.

回答4:

You seem to have weird line endings in your script: ^M is a carriage return \r. Transform your script to Unix line endings (just \n instead of \r\n, which is the line ending on Windows systems).

回答5:

An alternative approach:

sudo ln -s /usr/bin/perl /usr/local/bin/perl`echo -e '\r'`

回答6:

And if you prefer Sublime Text - simply go to View -> Line Endings and check Unix.