Why bother with argv[0]?

Re:Why bother with argv[0]? by yjftsjthsd-h on Tuesday September 03, 2024 @02:29PM (#41437674)

Well /bin/sh is also busybox, so I think you'd need

    #!/bin/busybox sh
    exec /bin/busybox ls

?

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Re:Why bother with argv[0]? by sltkr on Tuesday September 03, 2024 @03:05PM (#41438048)

Great point!

Actually this observation invalidates the whole setup. Because even though you could define /bin/sh itself as:

    #!/bin/busybox sh
    exec /bin/busybox sh

Then you still cannot use #!/bin/sh in any other shell scripts, because for historical reasons the interpreter of a script is not allowed to be another interpreted script, it must be a binary. So /bin/sh pretty much has to be an actual binary.

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