Using scripts created in Windows on Linux

A few weeks ago I tried converting a Windows batch script to a Linux shell (bash) script. The syntax between windows and linux shell scripts is quite different, but I also had a problem other than syntax differences.

After modifying the script to use linux syntax (e.g. proper loops instead of labels and GOTOs), I ran the script but it returned the following message:

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

A quick google revealed the problem was the file using windows line endings (\r\n), while linux uses \n for line endings. Luckily there is a handy utility found in most linux distros that you can use to convert files containing windows line endings to linux line endings.

In Ubuntu I used fromdos, though other distros might use dos2unix. In terminal just type


Easy, eh?

If you want to convert a file from linux to windows line endings instead, you can just use todos or unix2dos.

Posted on by xoogu, last updated

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