#!bin/sh echo "Hello World"
#!/bin/sh echo "Hello World"
The script's interpreter, as specified in the shebang, does not start with a
The interpreter should always be specified by absolute path to ensure that the script can be executed from any directory. When it's not, it's generally a typo like in the problematic example.
If you don't know where the interpreter is and you hoped to use
#! bash, this is not an option. Use
#!/usr/bin/env bash echo "Hello World"
While not required by POSIX,
env can essentially always be found in
/usr/bin and will search the PATH for the specified executable.
ShellCheck is a static analysis tool for shell scripts. This page is part of its documentation.