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Carriage Return Character Causes Bad Interpreter

If you access UNIX shell scripts between platforms, such as Linux and Windows, then it's likely you encountered error message similar to the following in the past:


-bash: ./script.sh: /bin/sh^M: bad interpreter: No such file or directory

This error message is caused by saving the "script.sh" file in an operating system--DOS, OS/2, and Windows--that uses carriage-return (CR) and line-feed (LF) as end-of-line (EOL) character sequence. UNIX platform uses the LF character for EOL. The "^M" character in the error message is the give-away, as it symbolizes for the CR character.

To fix the UNIX shell script, use our ConvertEOL (Freeware) command-line app to convert the script back to the UNIX format. ConvertEOL is written in Java, so it runs on any operating system with Java installed.

The following is a list of command sequences for UNIX shell to fix the script:


java ConvertEOL script.sh t.sh
mv t.sh script.sh
chmod 700 script.sh

Chieh Cheng
Fri, 18 Nov 2011 21:38:07 +0000

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