The execution flag must be set on a file for it to be possible to be executed as a script on a Linux system.
This is a not possible if you develop your code on a Windows box.
To set the proper file permissions, you use
chmod doesn't exist on windows
chmod +x script can't be done.
There is a solution if you version control the files using Git. It is possible to set the file permissions in Git.
Lets start with checking the current file permissions with the command:
git ls-files --stage
This will list all files with the unix file permissions. It may look like this:
100644 c78a60c8d5f2c58f4abd248ee6513e29b147d92a 0 find-images.sh
The file above,
find-images.sh, have the file permission 644.
File permission 644 means can be visualized like this:
| | User | Group | Other | |---------|------|-------|-------| | Read | Yes | Yes | Yes | | Write | Yes | No | No | | Execute | No | No | No |
The user can read and write, but not execute the file. In order to execute
the execution flag must be set. We would like to execute the command
chmod +x but
when we use windows, we can't.
The solution is to do
git update-index --chmod=+x 'find-images.sh'
This will set the execution flag and the file will be possible to execute.
Developing on a Windows box makes life complicated. But it is at least possible to set the execution flag on a script using git.