On 6/18/20 7:15 PM, Chris Billington via arch-general wrote: > I haven't seen this mentioned yet which makes me wonder if I've > misunderstood, but isn't it already the case that bash runs in a > posix-compatible mode if executed as /bin/sh? > > I remember a bug a while back [1] that broke graphical login because > flatpak used a bashism in an X startup script. Does this not imply that any > bashisms executed with /bin/sh would already be causing breakage today on > Arch Linux? > > [1] https://bugs.archlinux.org/task/61420#comment176360 Yep -- as I said earlier in the thread: > Meanwhile, scripts which use bashisms but a /bin/sh shebang are broken > even if /bin/sh is a symlink to bash. Bash disables some, but not all, > features of bash if it is invoked in POSIX mode, such as via a symlink > named /bin/sh -- so, you do not even get the benefits of bash, and never > have, if you used /bin/sh as your shebang. -- Eli Schwartz Bug Wrangler and Trusted User
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