From nobody Sun Aug 10 06:59:07 2025 X-Original-To: questions@mlmmj.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mlmmj.nyi.freebsd.org (Postfix) with ESMTP id 4c07sn5tTZz640cd for ; Sun, 10 Aug 2025 06:59:09 +0000 (UTC) (envelope-from des@freebsd.org) Received: from smtp.freebsd.org (smtp.freebsd.org [IPv6:2610:1c1:1:606c::24b:4]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256 client-signature RSA-PSS (4096 bits) client-digest SHA256) (Client CN "smtp.freebsd.org", Issuer "R11" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 4c07sn58xLz3ZQt; Sun, 10 Aug 2025 06:59:09 +0000 (UTC) (envelope-from des@freebsd.org) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=freebsd.org; s=dkim; t=1754809149; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=9n7gbqZeNZnXqathrcJ9tJkKO1/NCPBF/+KKgIlv7cw=; b=OFjyrPsmVCwaM8soLfNA6J1cuoXkOSIYczxdl5w9Pcvr6Y6+aZwADt9pIT1cPs0r8J9+Rz LWzIc+yDQKNWtDAUJIhcYk8QZrI3aOQXI1Uxgw8tRYBdRb46UikvhQtlr96Fefsqn8Qb6n fEuzfVL8FnusQ25OYVoSf9EMiHnUVdOK0zOfEHvhaW5dfQhSiR1IyB4sG/Y8RLQLLM3scE 5Gn7YeNNofqUbcxTratL8GxWVQhoL6EfD09JmXSAhGfnqaqyoXk7alRoziziSDscqjH+cl op24E57vGR0xmQ4dfwaCPvM4nNtBWYXBtJnY2UBcVu27UPDycXUN+gFlpJiDhw== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=freebsd.org; s=dkim; t=1754809149; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=9n7gbqZeNZnXqathrcJ9tJkKO1/NCPBF/+KKgIlv7cw=; b=qlOQyhT37NzoNS9Jcpe4ZQa/aJBOAyPAn+CfkcwHMCBTO8kqOP/9IX6xfa5yRcj0ZlYYdQ 6pjIogSX25OdlJN0kB4fc5KE0aoaTBpT212Q44DwHnz6zcSjyunJl7hv0QJmWQK8gFddUB zfVcXvmCtbpjOg56gnqfA1RZ50IaalGr4REdB43VEFwgfrShYrPcFeUxHzqOsoB560mSuG RtIOoCphpDvQlQsnYgnnPoHymcNdE146jN6fmUmpYdBCwdo5dYbhv4CMKkxUmZ1GC4e644 9HLA3ZWk14HuvX8d5k+yI/tZ+YPKiOMAKjVIR8hwdIaxtgvlFS0vy+7G+8DJGQ== ARC-Authentication-Results: i=1; mx1.freebsd.org; none ARC-Seal: i=1; s=dkim; d=freebsd.org; t=1754809149; a=rsa-sha256; cv=none; b=X3iysFaoahAE/R8lBK69vuCrQXO6hU9TFf2AqVkONDw1AAYZ+rDL8nDC3y4elVTbxGJ5Cb dYRHw12KNCp1TljQwRpbstkHtNSsz7qdG14L6XCr9W5Sh/ymWiT0hT/4jtiPxke+nWXiGs ckeaK4nxSEO97KAomU6LZiHntN9dvptp75geGkoRplcnYKDyMk8FqxTCkosAOM38OUF6rp HYY4cjMEjx4/4zR+piJsCX6AhjWN6ght4mnqzbpbsmkwbRYszW8qbEj09QAvFXJMLQen46 Zsf1ARJZ/zOKsiQHwt/x+PusmILpra0+4oylPhp07WMzK4Vz4gnx8//614rT9w== Received: from ltc.des.dev (unknown [IPv6:2a01:e0a:c54:bed0:922e:16ff:fef1:acef]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (Client did not present a certificate) (Authenticated sender: des) by smtp.freebsd.org (Postfix) with ESMTPSA id 4c07sn3tBYzDW1; Sun, 10 Aug 2025 06:59:09 +0000 (UTC) (envelope-from des@freebsd.org) Received: by ltc.des.dev (Postfix, from userid 1001) id 35DD912D79; Sun, 10 Aug 2025 08:59:07 +0200 (CEST) From: =?utf-8?Q?Dag-Erling_Sm=C3=B8rgrav?= To: Richard M Kreuter Cc: questions@freebsd.org Subject: Re: shebanged script not executed right - wth In-Reply-To: <43451.1754792884@ruk.vpn.home.arpa> (Richard M. Kreuter's message of "Sat, 09 Aug 2025 22:28:04 -0400") References: <38974.1754741865@ruk.vpn.home.arpa> <86a5481xax.fsf@ltc.des.dev> <865xew1ww9.fsf@ltc.des.dev> <861ppk1w8j.fsf@ltc.des.dev> <41452.1754770674@ruk.vpn.home.arpa> <86h5ygz10j.fsf@ltc.des.dev> <43451.1754792884@ruk.vpn.home.arpa> User-Agent: Gnus/5.13 (Gnus v5.13) Date: Sun, 10 Aug 2025 08:59:07 +0200 Message-ID: <86cy93zmpw.fsf@ltc.des.dev> List-Id: User questions List-Archive: https://lists.freebsd.org/archives/freebsd-questions List-Help: List-Post: List-Subscribe: List-Unsubscribe: X-BeenThere: freebsd-questions@freebsd.org Sender: owner-freebsd-questions@FreeBSD.org MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable Richard M Kreuter writes: > Here's how I tried to emulate the OP's report. It seems consistent > with the idea that a script cannot be a shebang interpreter. But I > must be mistaken, as you've found otherwise. What am I missing or > misunderstanding? Nothing. I didn't find otherwise. The kernel returns ENOEXEC if it encounters a second level of indirection, but the shell (or libc) may react to that by trying to execute the program as a shell script, which may or may not work. DES --=20 Dag-Erling Sm=C3=B8rgrav - des@FreeBSD.org